Federal Register of Legislation - Australian Government

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Standards/Australian Design Rules for Vehicles as made
This standard prescribes requirements for new pneumatic tyres designed primarily for commercial vehicles.
Administered by: Infrastructure, Regional Development and Cities
Exempt from sunsetting by the Legislation (Exemptions and Other Matters) Regulation 2015 s12 item 40
Made 25 Oct 2018
Registered 31 Oct 2018
Tabled HR 26 Nov 2018
Tabled Senate 12 Nov 2018

Title: Australian Coat of Arms - Description: Australian Coat of Arms

 

 

 

Vehicle Standard (Australian Design Rule 96/00 – Commercial Vehicle Tyres) 2018

I, ANDREW BROAD, Assistant Minister to the Deputy Prime Minister, determine this vehicle standard under section 7 of the Motor Vehicle Standards Act 1989.

 

 

 

 

 

Dated                   25 October 2018

 

 

 

 

 

 

 

 

 

 

 

 

[SIGNED]

Andrew Broad

Assistant Minister to the Deputy Prime Minister


 

CONTENTS

 

1.                     legislative provisions.................................................................... 3

2.                     FUNCTION................................................................................................... 3

3.                     APPLICABILITY......................................................................................... 3

4.                     DEFINITIONS.............................................................................................. 3

5.                     requirements........................................................................................ 3

6.                     exemptions AND ALTERNATIVE PROCEDURES........................... 4

7.                     alternative standardS.................................................................. 5

APPENDIX A.................................................................................................................. 6

 


 

1.                                          legislative provisions

1.1.                                    Name of Standard

1.1.1.                              This Standard is the Vehicle Standard (Australian Design Rule 96/00 Commercial Vehicle Tyres) 2018.

1.1.2.                              This Standard may also be cited as Australian Design Rule 96/00 Commercial Vehicle Tyres.

1.2.                                    Commencement

1.2.1.                              This Standard commences on the day after it is registered.

2.                                          FUNCTION

2.1.                                    The function of this vehicle standard is to specify requirements for new pneumatic tyres designed primarily for commercial vehicles.

3.                                          APPLICABILITY

3.1.                                    The circumstances under which vehicles must comply with this standard are set out in the Australian Design Rule 95/… – Installation of Tyres.

3.2.                                    This standard does not apply to passenger car tyres (otherwise known as Class C1 tyres; and designed primarily for vehicles of UN categories M1, N1, O1 and O2).

3.3.                                    This standard does not apply to re-treaded tyres fitted to trailers.

3.4.                                    This standard does not apply to any temporary-use spare unit(s) supplied with a vehicle.

4.                                          DEFINITIONS

4.1.                                    For vehicle categories, definitions and meanings used in this standard, refer to:

4.1.1.                              Vehicle Standard (Australian Design Rule Definitions and Vehicle Categories) 2005; and

4.1.2.                              Definitions in Appendix A of this standard or the alternative standards at clause 7.

5.                                          requirements

5.1.                                    For vehicles fitted with new light truck or new truck/bus (commercial vehicle) tyres, the tyres fitted must comply with the requirements of:

(a)          Appendix A, except as varied by Section 6 Exemptions and Alternative Procedures; or

(b)          at least one of the alternative standards at clause 7.


 

6.                                          exemptions AND ALTERNATIVE PROCEDURES

6.1.                                    Subject to clause 6.2 below, compliance with the following parts, sections and annexes of Appendix A is not required for the purposes of this standard:

Section 3         Markings

Section 4         Application for approval

Section 5         Approval

Section 7         Modification and extension of approval of a tyre type

Section 8         Conformity of production

Section 9         Penalties for non-conformity of production

Section 10       Production definitively discontinued

Section 11       Names and addresses of Technical Services responsible for conducting approval tests, and of Type Approval Authorities

Annexes

Annex 1           Communication

Annex 2           Arrangement of approval mark

Annex 9           Communication – Upgrade of service description for the purposes of re-treading in accordance with UN Regulation No. 109

6.2.                                    In the case of a tyre type for which the manufacturer has elected, as permitted by clause 6.1 above, not to meet the full requirements of Appendix A – Section 3 – Markings, each tyre must at least bear:

(a)          the markings referred to in paragraphs 3.1.1 to 3.1.8 of Appendix A, on both side walls in the case of symmetrical tyres or at least on the outer side wall in the case of asymmetrical tyres;

(b)          the date of manufacture in the form of a group of four digits, the first two showing the week and the last two the year of manufacture, on at least one side wall;

(c)          the inflation pressure used, in either psi or kPa, for the dimension measurement and the load/speed endurance test, on at least one side wall; and

(d)         where applicable, the markings referred to in paragraphs 3.1.13 to 3.1.16 of Appendix A, on both side walls in the case of symmetrical tyres or at least on the outer side wall in the case of asymmetrical tyres.

6.2.1.                              Each required marking must be moulded onto or into the tyre.  They must be clearly legible and must, except for the marking referred to in paragraph 3.1.1 of Appendix A, be situated in the lower half of at least one of its side walls.


 

7.                                          alternative standardS

7.1.                                    The technical requirements of the United Nations Regulation No. 54 – UNIFORM PROVISIONS CONCERNING THE APPROVAL OF PNEUMATIC TYRES FOR COMMERCIAL VEHICLES AND THEIR TRAILERS, incorporating the 00 series of amendments.

7.2.                                    The technical requirements of the United States Federal Motor Vehicle Safety Standard (FMVSS) No. 119 (49 CFR 571.119) – 10-1-17 Edition, for new pneumatic tires for motor vehicles with a GVWR of more than 4,536 kilograms.

7.3.                                    The technical requirements of the Japanese Industrial Standard (JIS) D4230:1998 (Automobile tyres), for light truck and truck/bus tyres.

7.4.                                    The technical requirements of the Australian/New Zealand Standard (AS/NZS) 2230:1999 (New pneumatic tyres for light trucks and trucks/buses).

 


APPENDIX A

 

Agreement

                   Concerning the Adoption of Harmonized Technical United Nations Regulations for Wheeled Vehicles, Equipment and Parts which can be Fitted and/or be Used on Wheeled Vehicles and the Conditions for Reciprocal Recognition of Approvals Granted on the Basis of these United Nations Regulations*

 

(Revision 3, including the amendments, which entered into force on 14 September 2017)

                  

Addendum 53: UN Regulation No. 54

Incorporating by the Department of Infrastructure, Regional Development and Cities, all valid text up to:

Corrigendum 1 to Supplement 15 to the original version of the Regulation – Date of entry into force: 23 June 2004

Supplement 16 to the original version of the Regulation – Date of entry into force: 13 November 2004

Corrigendum 1 to Revision 2 of the Regulation – Date of entry into force: 9 March 2005

Supplement 17 to the original version of the Regulation – Date of entry into force: 17 March 2010

Erratum to Revision 2 of the Regulation (English only)

Supplement 18 to the original version of the Regulation – Date of entry into force: 27 January 2013

Corrigendum 1 to Revision 3 of the Regulation (Erratum by the secretariat)

Corrigendum 2 to Revision 3 of the Regulation – Date of entry into force: 25 June 2014

Supplement 19 to the original version of the Regulation – Date of entry into force: 22 January 2015

Supplement 20 to the original version of the Regulation – Date of entry into force: 20 January 2016

Supplement 21 to the original version of the Regulation – Date of entry into force: 9 February 2017

 

Uniform provisions concerning the approval of pneumatic tyres for commercial vehicles and their trailers

 


UN Regulation No. 54

Uniform provisions concerning the approval of pneumatic tyres for commercial vehicles and their trailers

Contents

                                                                                                                                                                                                        Page

                1.      Scope............................................................................................................................................................................... 8

                2.      Definitions...................................................................................................................................................................... 8

                3.      Markings...................................................................................................................................................................... 12

                4.      Application for approval........................................................................................................................................... 14

                5.      Approval...................................................................................................................................................................... 15

                6.      Specifications.............................................................................................................................................................. 16

                7.      Modification and extension of approval of a tyre type ..................................................................................... 19

                8.      Conformity of production ....................................................................................................................................... 20

                9.      Penalties for non-conformity of production ......................................................................................................... 20

             10.      Production definitively discontinued ..................................................................................................................... 20

             11.      Names and addresses of Technical Services responsible for conducting approval tests,
and of Type Approval Authorities ......................................................................................................................... 20

Annexes

                 1      Communication.... 22

                 2      Arrangement of approval mark.... 24

                 3      Arrangement of tyre markings.. 25

                 4      List of symbols of load-capacity indices.. 27

                 5      Tyre-size designation and dimensions.. 31

                         Part I - European tyres.. 31

                         Part II - United States tyres.. 36

                 6      Method of measuring pneumatic tyres.. 43

                 7      Procedure for load/speed endurance tests.. 44

                         Appendix 1 - endurance-test programme... 46

                         Appendix 2 - relation between the pressure index and the units of pressure... 47

8  Variation of load capacity with speed commercial vehicles tyres - radial and diagonal. 48

9  Communication - upgrade of service description for the purposes of retreading in
accordance with Regulation No. 109.... 50

 


1.            Scope

This Regulation covers new pneumatic tyres * designed primarily for vehicles of categories M2, M3, N, O3 and O4.[1] [2] However, it does not apply to tyre types identified by speed category symbols corresponding to speeds below eighty (80) km/h.

2.            Definitions

For the purposes of this Regulation:

2.1.                  "Type of tyre" means tyres which do not differ in such essential characteristics as:

(a)        The manufacturer’s name;

(b)        Tyre-size designation;

(c)        Category of use (normal tyre, snow tyre, special use tyre);

(d)        Structure (diagonal (bias-ply); radial);

(e)        Speed category symbol;

(f)         Load-capacity indexes;

(g)        Tyre Cross-section;

2.2.                  "Manufacturer" means the person or body who is responsible to the Type Approval Authority (TAA) for all aspects of the type-approval and for ensuring the conformity of production.

2.3.                  “Brand name/trademark" means the identification of the brand or trademark as defined by the tyre manufacturer and marked on the sidewall(s) of the tyre. The brand name/trademark may be the same as that of the manufacturer.

2.4.                  "Trade description/commercial name" means an identification of a range of tyres as given by the tyre manufacturer. It may coincide with the brand name/trademark.

2.5.                  Category of use:

2.5.1.               "Normal tyre" means a tyre intended for normal, on-road use;

2.5.2.               "Snow tyre" means a tyre whose tread pattern, tread compound or structure is primarily designed to achieve in snow conditions a performance better than that of a normal tyre with regard to its ability to initiate or maintain vehicle motion;

2.5.3.               "Special use tyre" means a tyre intended for mixed use both on- and off-road or for other special duty. These tyres are primarily designed to initiate and maintain the vehicle in motion in off-road conditions;

2.5.3.1.            "Professional off-road tyre" is a special use tyre primarily used for service in severe off-road conditions;

2.6.                  "Structure" of a tyre means the technical characteristics of the tyre's carcass.  A distinction is made between the following structures in particular:

2.6.1.               "Diagonal" or "bias-ply" describes a  tyre structure in which the ply cords extend to the beads and are laid at alternate angles substantially less than 90° to the centreline of the tread;

2.6.2.               "Radial" describes a tyre structure in which the ply cords extend to the beads and are laid substantially at 90° to the centreline of the tread, the carcass being stabilized by an essentially inextensible circumferential belt;

2.7.                  "Bead" means the part of a tyre which is of such shape and structure as to fit the rim and to hold the tyre on it[3];

2.8.                  "Cord" means the strands forming the fabric of the plies in the tyre3;

2.9.                  "Ply" means a layer of rubber-coated parallel cords3;

2.10.                "Carcass" means that part of a tyre other than the tread and the rubber sidewalls which, when inflated, bears the load3;

2.11.                "Tread" means that part of a pneumatic tyre which comes into contact with the ground, protects the carcass against mechanical damage and contributes to ground adhesion3;

2.12.                "Sidewall" means the part of a tyre between the tread and the area designed to be covered by the rim flange3;

2.13.                "Lower sidewall" means the area included between the line of maximum section width of the tyre and the area designed to be covered by the rim flange3;

2.13.1.             However, in case of tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.12.) symbol "A", it means the area of the tyre which is seating on the rim;

2.14.                "Tread groove" means the space between two adjacent ribs and/or blocks in the tread pattern3;

2.15.                "Section width (S)" means the linear distance between the outsides of the sidewalls of an inflated tyre, excluding elevations due to labelling (marking), decoration or protective bands or ribs3;

2.16.                "Over-all width" means the linear distance between the outsides of the sidewalls of an inflated tyre, including labelling (marking), decoration and protective bands or ribs3;

2.17.                "Section height (H)" means a distance equal to half the difference between the outer diameter of the tyre and the nominal rim diameter;

2.18.                "Nominal aspect ratio (Ra)" means one hundred times the number obtained by dividing the number expressing the section height (H) by the number expressing the nominal section width (S1), both dimensions expressed in the same units;

2.19.                "Outer diameter (D)" means the overall diameter of an inflated new tyre3;

2.20.                "Tyre-size designation" means:

2.20.1.             A designation showing:

2.20.1.1.         The nominal section width (S1).  This width must be expressed in mm, except in the case of types of tyre for which the size designation is shown in the first column of the tables in Annex 5 to this Regulation;

2.20.1.2.         The nominal aspect ratio, except in the case of certain types of tyre for which the size designation is shown in the first column of the tables in Annex 5 to this Regulation or, depending on the tyre design type, the nominal outer diameter expressed in mm;

2.20.1.3.         A conventional number "d" (the "d" symbol) denoting the nominal diameter of the rim and corresponding to its diameter expressed either in codes (number below 100) or in millimetres (numbers above 100).  Numbers corresponding to both types of measurement may be used together in the designation;

2.20.1.3.1.      The values of the "d" symbols expressed in millimetres are shown below:

Nominal rim diameter code ("d" symbol)

Value of the "d" symbol

expressed in mm

8

9

10

11

12

13

14

203

229

254

279

305

330

356

15

16

17

18

19

381

406

432

457

483

20

21

22

24

25

508

533

559

610

635

14.5

16.5

17.5

19.5

20.5

22.5

24.5

26

28

30

368

419

445

495

521

572

622

660

711

762

 

2.20.1.4.         An indication of the tyre to rim fitment configuration when it differs from the standard configuration and is not already expressed by the symbol "d" denoting the nominal rim diameter code;

2.21.                "Nominal rim diameter (d)" means the diameter of the rim on which a tyre is designed to be mounted3;

2.22.                "Rim" means the support for a tyre-and-tube assembly, or for a tubeless tyre, on which support the tyre beads are seated3;

2.23.                "Theoretical rim" means a rim whose width would be equal to x times the nominal section width of a tyre; the value of x shall be specified by the manufacturer of the type;

2.24.                "Measuring rim" means the rim on which a tyre must be fitted for dimensional measurements;

2.25.                "Test rim" means the rim on which a tyre must be fitted for load/speed endurance testing;

2.26.                "Chunking" means the breaking away of pieces of rubber from the tread;

2.27.                "Cord separation" means the parting of the cords from their coating;

2.28.                "Ply separation" means the parting of adjacent plies;

2.29.                "Tread separation" means the pulling away of the tread from the carcass;

2.30.                "Load-capacity index" means one or two numbers, which indicate the load the tyre can carry in single or in single and dual operation at the speed corresponding to the associated speed category and when operated in conformity with the requirements governing utilization specified by the manufacturer.  A type of tyre can have either one or two sets of load capacity indices depending on whether or not the provisions of paragraph 6.2.5. are applied.  The list of these indices and their corresponding loads is given in Annex 4;

2.31.                "Speed category" means:

2.31.1.             The speeds, indicated by a symbol, at which the tyre can carry the load indicated by the associated load-capacity index;

2.31.2.             The speed categories are as shown in the table below[4]:

Speed-category symbol

Corresponding speed (km/h)

F

G

J

K

L

M

N

P

Q

R

S

T

U

H

80

90

100

110

120

130

140

150

160

170

180

190

200

210

2.32.                "Table load-capacity variation with speed" means:

                         The table, in Annex 8, showing as a function of the load-capacity indices and nominal-speed-category symbols the load variations, which a tyre can withstand when used at speeds different from that conforming to its nominal-speed-category symbol.  The load variations do not apply in the case of the additional load capacity symbol and speed category obtained when the provisions of paragraph 6.2.5. are applied;

2.33.                "Void to fill ratio" means the ratio between the area of voids in a reference surface and the area of this reference surface calculated from the mould drawing;

2.34.                "Tyre Class" means one of the following groupings:

2.34.1.             Class C2 tyres: Tyres identified by a load capacity index in single formation lower or equal to 121 and a speed category symbol higher or equal to "N";

2.34.2.             Class C3 tyres: Tyres identified by:

(a)        A load capacity index in single formation higher or equal to 122; or

(b)        A load capacity index in single formation lower or equal to 121 and a speed category symbol lower or equal to "M".

3.            Markings

3.1.                  Tyres submitted for approval shall bear on both side walls in the case of symmetrical tyres and at least on the outer side wall in the case of asymmetrical tyres:

3.1.1.               The manufacturer’s name or the Brand name/trademark;

3.1.2.               The trade description/commercial name (see paragraph 2.4. of this Regulation). However, the trade description is not required when it coincides with the Brand name/trademark.

3.1.3.               The tyre-size designation as defined in paragraph 2.20. of this Regulation;

3.1.4.               An indication of the structure as follows:

3.1.4.1.            On diagonal (bias-ply) tyres: no indication, or the letter "D";

3.1.4.2.            On radial-ply tyres: the letter "R" placed in front of the rim-diameter marking and, optionally, the word "RADIAL";

3.1.5.               The speed-category symbol (or symbols);

3.1.5.1.            An indication of the tyre's nominal speed category in the form of the symbol prescribed in paragraph 2.31.2. above;

3.1.5.2.            An indication of a second speed category in cases where paragraph 6.2.5. below is applied;

3.1.6.               The inscription M+S or M.S or M&S if the tyre is classified in the category of use "snow tyre" or if the tyre is classified in the category of use "special use tyre" when declared by the tyre manufacturer at paragraph 4.1.3. as complying also with the definition given in paragraph 2.5.2.

3.1.7.               The load-capacity indices as defined in paragraph 2.30. of this Regulation;

3.1.8.               The word "TUBELESS" if the tyre is designed for use without an inner tube;

3.1.9.               The date of manufacture in the form of a group of four digits, the first two showing the week and the last two the year of manufacture.  However, this marking, which it is permissible to restrict to one sidewall, shall not be mandatory, on any tyre submitted for approval, until two years after the date of entry into force of this Regulation[5];

3.1.10.             In the case of tyres which can be re-grooved, the symbol

Title: Symbol for tyre that can be re-grooved - Description: Symbol for tyre that can be re-grooved “

at least 20 mm in diameter, or the word "REGROOVABLE", moulded into or on to each sidewall;

3.1.11.             An indication, by the "PSI" index, of the inflation pressure to be adopted for the load/speed endurance tests, as explained in Annex 7, Appendix 2. However, this indication, which it is permissible to restrict to one sidewall, shall not be mandatory, on any tyre submitted for approval, until two years after the date of entry into force of this Regulation. 5

                         For tyres first approved after 1 January 2018, the inflation pressure for the dimension measurement and for the load/speed endurance test, pursuant to paragraph 4.1.12. of this Regulation, shall be indicated in kilopascals, replacing the "PSI" index.

                         It is allowed to use kPa marking instead of PSI for tyres first type approved before 1 January 2018;

3.1.12.             In the case of tyres first approved after 1 March 2004 the identification referred to in paragraph 2.20.1.4. shall be placed only immediately after the rim diameter marking referred to in paragraph 2.20.1.3;

3.1.13.             The inscription "MPT" (or alternatively "ML" or "ET") and /or "POR" if the tyre is classified in the category of use "special use tyre". In addition, they may also bear the inscription M+S or M.S or M&S.

                         "ET" means Extra Tread, "ML" stands for Mining and Logging, "MPT" means Multi-Purpose Truck and "POR" means Professional Off Road6;

3.1.14.             The prefix "LT" before the tyre size designation, or the suffix "C" or "LT" after the rim diameter marking referred to in paragraph 2.20.1.3., and, if applicable, after the tyre to rim fitment configuration referred to in paragraph 2.20.1.4., or the suffix "LT" after the service description.

3.1.14.1.         This marking is optional in the case of tyres fitted on 5° drop centre rims, suitable for single and dual fitment, having a load capacity index in single lower or equal to 121 and destined for the equipment of motor vehicles;

3.1.14.2.         This marking is mandatory in the case of tyres fitted on 5° drop centre rims, suitable for single fitment only, having a load capacity index higher or equal to 122 and destined for the equipment of motor vehicles;

3.1.15.             The suffix "CP" after the rim diameter marking referred to in paragraph 2.20.1.3., and, if applicable, after the tyre to rim fitment configuration referred to in paragraph 2.20.1.4.  This marking is mandatory in the case of tyres fitted on 5° drop centre rims, having a load capacity index in single lower or equal to 121 and specifically designed for the equipment of motor caravans;

3.1.16.             The inscription "FRT" (Free Rolling Tyre) in case of tyres designed for the equipment of trailer axles and axles of motor vehicles other than front steering and drive axles.

3.2.                  Tyres shall exhibit a free space sufficiently large to accommodate an approval mark as shown in Annex 2 to this Regulation.

3.3.                  Annex 3 to this Regulation gives an example of an arrangement of the tyre markings.

3.4.                  The markings referred to in paragraph 3.1. and the approval mark prescribed in paragraph 5.4. of this Regulation shall be moulded on to or into the tyres.  They shall be clearly legible and shall, except for the marking referred to in paragraph 3.1.1. above, be located on at least one lower sidewall.

3.4.1.               However, for tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.12.) symbol "A", the markings may be placed anywhere on the sidewall of the tyre.

4.            Application for approval

4.1.                  The application for approval of a type of tyre with regard to this Regulation shall be submitted by the tyre manufacturer or by his duly accredited representative. It shall specify:

4.1.1.               The tyre-size designation as defined in paragraph 2.20. of this Regulation;

4.1.2.               The manufacturer's name;

4.1.2.1.            The Brand name(s)/trademark(s);

4.1.2.2.            The trade description(s)/commercial name(s).

4.1.3.               The category of use (normal, snow tyres, special use tyres);

4.1.3.1.            For the tyres belonging to the category of use "special use tyre" those which may bear the inscription M+S or M.S or M&S.

4.1.4.               Structure:  diagonal (bias ply) or radial;

4.1.5.               The speed category;

4.1.6.               The load-capacity indexes;

4.1.7.               Whether the tyre is intended to be used with or without an inner tube;

4.1.8.               The overall dimensions: overall section width and outer diameter;

4.1.9.               The factor "x" referred to in paragraph 2.23. above;

4.1.10.             The rims on which the tyre can be mounted;

4.1.11.             The measuring rim and test rim;

4.1.12              The inflation pressure for the dimension measurement and for the load/speed endurance test pressure;

4.1.13.             The additional load/speed combinations in cases where paragraph 6.2.5. below is applied.

4.2.                  The application for approval shall be accompanied (all in triplicate) by a sketch, or a representative photograph, which identify the tyre tread pattern and a sketch of the envelope of the inflated tyre mounted on the measuring rim showing the relevant dimensions (see paragraphs 6.1.1. and 6.1.2.) of the type submitted for approval.  It shall also be accompanied either by the test report issued by the approved test laboratory or by one or two samples of the tyre type, at the discretion of the competent authority.  Drawings or photographs of the side wall and tread of the tyre shall be submitted once production has been established, no later than one year after the date of issue of the type approval.

4.3.                  The competent authority shall verify the existence of satisfactory arrangements for ensuring effective control of the conformity of production before type approval is granted.

4.4.                  Where a tyre manufacturer submits application for type approval for a range of tyres, it is not considered necessary to carry out a load/speed test on every type of tyre in the range.  Worst case selection may be made at the discretion of the approval authority.

5.            Approval

5.1.                  If the type of tyre submitted for approval in pursuance of this Regulation meets the requirements of paragraph 6. below, approval of that type of tyre shall be granted.

5.2.                  An approval number shall be assigned to each type approved; its first two digits (at present 00 for the Regulation in its original form) shall indicate the series of amendments incorporating the most recent major technical amendments made to the Regulation at the time of issue of the approval.  The same Contracting Party may not assign the same number to another type of tyre.

5.3.                  Notice of approval or of refusal of approval of a type of tyre pursuant to this Regulation shall be communicated to the Parties to the Agreement, which apply this Regulation by means of a form conforming to the model in Annex 1 to this Regulation.

5.4.                  There shall be affixed, conspicuously, to every tyre conforming to a type of tyre approved under this Regulation, in the space referred to in paragraph 3.2. above and in addition to the markings prescribed in paragraph 3.1. above, an international approval mark consisting of:

5.4.1.               A circle surrounding the letter "E" followed by the distinguishing number of the country which has granted approval[6]; and

5.4.2.               An approval number.

5.5.                  The approval mark shall be clearly legible and be indelible.

5.6.                  Annex 2 to this Regulation gives an example of the arrangement of the approval mark.

5.7.                  Subsequent re-treading in accordance with Regulation No. 109

In the case where, during the course of production of a particular tyre type, the manufacturer has obtained a new approval for that same tyre type to be marked with a service description indicating a higher load index or different speed symbol than the earlier marking and where the tyre manufacturer authorizes the earlier tyre type to be re-treaded and marked with the later service description, the tyre manufacturer shall complete the Communication document given in Annex 9 to this Regulation and shall submit this to the Type Approval Authority that has granted the new approval.  If the authorization for upgrading only applies to tyres from a particular manufacturing plant, or produced during particular production periods, the information necessary to identify the tyres shall be stated on the Communication document.

The Type Approval Authority shall communicate this information to other Parties to the Agreement, which apply this Regulation, and tyre manufacturers or Type Approval Authorities shall release this information on the request of any re-treading production unit that is approved in accordance with Regulation No. 109.

6.            Specifications

6.1.                  Dimensions of tyres

6.1.1.               Section width of a tyre

6.1.1.1.            The section width shall be obtained by means of the following formula:

S = S1 + K (A - A1),

Where:

S          is the "section width" rounded to the nearest millimetre and measured on the measuring rim;

S1         is "the nominal section width" in millimetres, as shown on the sidewall of the tyre in the tyre designation as prescribed;

A          is the width of the measuring rim in millimetres, as shown by the manufacturer in the descriptive note; and

A1         is the width of the theoretical rim in millimetres.

A1 shall be taken to equal S1 multiplied by the factor x as specified by the manufacturer, and K shall be taken to equal 0.4.

6.1.1.2.            However, for the existing types of tyres whose designation is given in the first column of the tables in Annex 5 to this Regulation, the section width shall be deemed to be that given opposite the tyre designation in those tables.

6.1.1.3.            However, for tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.12.) symbol "A", K shall be taken to equal 0.6.

6.1.2.               Outer diameter of a tyre

6.1.2.1.            The outer diameter of a tyre shall be obtained by means of the following formula:

D = d + 2H

where:

D          is the outer diameter expressed in millimetres;

d          is the conventional number defined in paragraph 2.20.1.3. above, expressed in millimetres;

H         is the nominal section height rounded to the nearest millimetre and is equal to

H = S1 • 0.01 Ra, where

S1         is the nominal section width in millimetres;

Ra        is the nominal aspect ratio;

all as shown on the sidewall of the tyre in the tyre-size designation in conformity with the requirements of paragraph 3.4. above.

6.1.2.2.            However, for the existing types of tyres whose designation is given in the first column of the tables in Annex 5 to this Regulation, the outer diameter shall be deemed to be that given opposite the tyre designation in those tables.

6.1.2.3.            However, for tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.12.) symbol "A", the outer diameter shall be that specified in the tyre-size designation as shown on the sidewall of the tyre.

6.1.3.               Method of measuring tyres

                         The dimensions of tyres shall be measured by the procedure described in Annex 6 to this Regulation.

6.1.4.               Tyre section width specifications

6.1.4.1.            The overall width of a tyre may be less than the section width or widths determined pursuant to paragraph 6.1.1. above.

6.1.4.2.            It may exceed that value by 4 per cent in case of radial-ply tyres and by 8 per cent in the case of diagonal (bias-ply) tyres.  However, for tyres with nominal section width exceeding 305 mm intended for dual mounting (twinning), the value determined pursuant to paragraph 6.1.1. above shall not be exceeded by more than 2 per cent for radial-ply tyres with nominal aspect ratio higher than 60, or 4 per cent for diagonal (bias-ply) tyres. The respective limits shall be rounded to the nearest millimetre (mm).

6.1.4.3.            However, for tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.12.) symbol "A", the overall width of the tyre, in the lower area of the tyre, equals the nominal width of the rim on which the tyre is mounted, as shown by the manufacturer in the descriptive note, increased by 27 mm.

6.1.5.               Tyre outer diameter specifications

                         The outer diameter of a tyre must not be outside the values dmin and dmax obtained from the following formulae:

Dmin = d + 2 • Hmin

Dmax = d + 2 • Hmax

where:

Hmin = H • a                 rounded to the nearest mm

Hmax = H • b                rounded to the nearest mm

6.1.5.1.            For sizes listed in Annex 5 and for tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.12.) symbol "A", the nominal section height H is equal to:

                         H = 0.5 (D-d), rounded to the nearest mm - for references see paragraph 6.1.2.1.

6.1.5.2.            For other sizes, not listed in Annex 5

                         "H" and "d" are as defined in paragraph 6.1.2.1.

6.1.5.3.            Coefficients "a" and "b" are respectively:

6.1.5.3.1.        Coefficient "a" = .97

6.1.5.3.2.        Coefficient "b"                                     Radial             Diagonal

                         For normal use tyres                           1.04                 1.07

                         For special use tyres                            1.06                 1.09

6.1.5.3.3.        For snow tyres the outer diameter shall not exceed the following value

Dmax,snow = 1.01 • Dmax             rounded to the nearest mm

where Dmax is the maximum outer diameter established in conformity with the above.

For tyres of the category of use, "snow tyre" the outer diameter (Dmax) established in conformity with the above may be exceeded by one per cent.

6.2.                  Load/speed endurance test

6.2.1.               Each type of tyre shall undergo at least one load/speed endurance tests carried out by the procedure described in Annex 7 to this Regulation.

6.2.2.               A tyre which, after undergoing the endurance test, does not exhibit any tread separation, ply separation, cord separation, chunking or broken cords shall be deemed to have passed the test.

6.2.3.               The outer diameter of the tyre, measured six hours after the load/speed endurance test, must not differ by more than 3.5 per cent from the outer diameter as measured before the test.

6.2.4.               Where application is made for the approval of a type of tyre for the load/speed combinations given in the table in Annex 8, the endurance test prescribed in paragraph 6.2.1. above need not be carried out for load and speed values other than the nominal values.

6.2.5.               Where application is made for the approval of a type of tyre, which has a load/speed combination in addition to the one that is subject to the variation of load with speed given in the table in Annex 8, the endurance test prescribed in paragraph 6.2.1. above shall also be carried out on a second tyre of the same type at the additional load/speed combination.

6.3.                  Tread pattern of a tyre

6.3.1.               In order to be classified as a "special use tyre" a tyre shall have a block tread pattern in which the blocks are larger and more widely spaced than for normal tyres and have the following characteristics:

For C2 tyres: a tread depth ≥ 11 mm and void to fill ratio ≥ 35 per cent

For C3 tyres: a tread depth ≥ 16 mm and void to fill ratio ≥ 35 per cent

6.3.2.               In order to be classified as a 'professional off-road tyre', a tyre shall have all of the following characteristics:

(a)        For C2 tyres:

             (i)         A tread depth ≥ 11 mm;

             (ii)        A void to fill ratio ≥ 35 per cent;

             (iii)       A maximum speed rating of ≤ Q.

(b)        For C3 tyres:

             (i)         A tread depth ≥ 16 mm;

             (ii)        A void to fill ratio ≥ 35 per cent;

             (iii)       A maximum speed rating of ≤ K.

7.            Modification and extension of approval of a tyre type

7.1.                  Every modification of a tyre type shall be notified to the Type Approval Authority, which approved the tyre type.  That Authority may then either:

7.1.1.               Consider that the modifications made are unlikely to have an appreciable adverse effect and that in any case the tyre still meets the requirements; or

7.1.2.               Require a further test report from the Technical Service responsible for carrying out the tests.

7.2.                  A modification of the tread pattern of the tyre shall not be considered to necessitate a repetition of the tests prescribed in paragraph 6. of this Regulation.

7.3.                  Confirmation or refusal of approval, specifying the alterations, shall be communicated by the procedure specified in paragraph 5.3. above to the Parties to the Agreement which apply this Regulation.

7.4.                  The competent Type Approval Authority issuing the extension of approval shall assign a series number for such an extension and inform thereof the other Parties to the 1958 Agreement applying this Regulation by means of a communication form conforming to the model in Annex 1 to this Regulation.

8.            Conformity of production

                         The conformity of production procedures shall comply with those set out in the 1958 Agreement, Schedule 1 (E/ECE/TRANS/505/Rev.3) with the following requirements:

8.1.                  Tyres approved under this Regulation shall be so manufactured as to conform to the type approved, by meeting the requirements set forth in paragraph 6. above.

8.2.                  The Type Approval Authority, which has granted type approval, may at any time verify the conformity control methods applied in each production facility.  For each production facility, the normal frequency of these verifications shall be once every two years.

9.            Penalties for non-conformity of production

9.1.                  The approval granted in respect of a type of tyre pursuant to this Regulation may be withdrawn if the requirement laid down in paragraph 8.1. above is not complied with or if the tyres taken from the series have failed to pass the tests prescribed in that paragraph.

9.2.                  If a Party to the Agreement, which applies this Regulation, withdraws an approval it has previously granted, it shall forthwith so notify the other Contracting Parties applying this Regulation, by means of a communication form conforming to the model in annex 1 to this Regulation.

10.          Production definitively discontinued

                         If the holder of an approval completely ceases to manufacture a type of tyre approved in accordance with this Regulation, he shall so inform the Type Approval Authority, which granted the approval.  Upon receiving, the relevant communication that Authority shall inform thereof the other Parties to the 1958 Agreement applying this Regulation by means of copies of the communication form conforming to the model in Annex 1 to this Regulation.

11.          Names and addresses of Technical Services responsible for conducting approval tests, and of Type Approval Authorities

11.1.                The Contracting Parties to the 1958 Agreement which apply this Regulation shall communicate to the United Nations Secretariat the names and addresses of the technical services responsible for conducting approval tests and, where applicable, of the approved test laboratories and of the Type Approval Authorities which grant approval and to which forms certifying approval or extension of approval or refusal of approval or withdrawal of approval or production definitively discontinued, issued in other countries, are to be sent.

11.2.                The Contracting Parties to the 1958 Agreement, which apply this Regulation, may designate laboratories of tyre manufacturers, as approved, test laboratories.

11.3.                Where a Contracting Party to the 1958 Agreement applies paragraph 11.2. above, it may, if it so desires, be represented at the tests by one or more persons of its choice.

Explanatory figure

(See paragraph 2. of the Regulation)

 

Title: Explanatory figure for tyre terms/definitions - Description: Explanatory figure for tyre terms/definitions

 

 


Annex 1

Communication

(Maximum format: A4 (210 x 297 mm))

	issued by :		Name of administration:
......................................
......................................
......................................
 


[7]

 

concerning[8]:   Approval granted

                         Approval extended

                         Approval refused

                         Approval withdrawn

                         Production definitively discontinued

of a type of tyre for motor vehicles pursuant to Regulation No. 54

 

Approval No.:................................................. Extension No.: ............................................................

1.         Manufacturer's name and address:.......................................................................................

2.         Tyre type designation[9]..............................................................................................................

2.1.      Brand name(s)/trademark(s): ................................................................................................

2.2.      Trade description(s)/ Commercial name(s)/.........................................................................

3.         If applicable, name and address of manufacturer's representative:...............................

                                                                                                                                                                   

                                                                                                                                                                   

4.         Summarized description:

4.1.      Size of tyre..................................................................................................................................

4.2.      Category of use:  normal/snow/special2

4.3.      Structure:  diagonal (bias-ply)/radial2

4.4.      Tyre class: C2 / C32

4.5.      Speed category symbol:

4.5.1.  Nominal:.....................................................................................................................................

4.5.2.  Additional (if applicable): .......................................................................................................

4.6.      Load-capacity indices:

4.6.1.  Corresponding to nominal speed: single ................... twinned (dual).................................

4.6.2.  Corresponding to additional speed: single ................. twinned (dual)...............................

5.         Technical Service and, where applicable, test laboratory approved for purposes of approval or of verification of conformity:......................................................................................................

                                                                                                                                                                   

6.         Date of report issued by that Service:....................................................................................

7.         Number of report issued by that Service:..............................................................................

8.         Reasons(s) of extension (if applicable):................................................................................

9.         Any remarks:..............................................................................................................................

10.       Place:...........................................................................................................................................

11.       Date:............................................................................................................................................

12.       Signature:....................................................................................................................................

12.       Annexed to this communication is a list of documents in the approval file deposited at the Type Approval Authorities having delivered the approval and which can be obtained upon request.

                 


Annex 2

 

Arrangement of approval mark

 

Title: Example arrangement of an approval mark - Description: Example arrangement of an approval mark

a = 12 mm (min.)

 

The above approval mark affixed to a tyre shows that the type of tyre concerned has been approved in the Netherlands (E 4) under approval number 002439. The first two digits of the approval number indicate that the approval was granted in accordance with the requirements of Regulation No. 54 in its original form.

Note: The approval number must be placed close to the circle and either above or below the "E" or to left or right of that letter.  The digits of the approval number must be on the same side of the "E" and face in the same direction. The use of Roman numerals as approval numbers should be avoided so as to prevent any confusion with other symbols.

 


Annex 3

Arrangement of tyre markings

 

Title: Example arrangement of tyre markings - Description: Example arrangement of tyre markings

(*)  PSI marking instead of kPa is allowed for tyres first type approved before 1 January 2018.

 

 

 

Minimum heights of markings

(mm)

Tyres of nominal rim diameter < 508 mm (Code 20) or of nominal section width £ 235 mm (Code 9)

Tyres of nominal rim diameter ³ 508 mm (Code 20) or of nominal section width > 235 mm (Code 9)

B

6

9

C

4

D

6

1.                      These markings define a tyre:

Having a nominal section width of 255;

Having a nominal aspect ratio of 70;

Of radial-ply structure (R);

Having a nominal rim diameter of 572 mm, for which the symbol is 22.5;

Having load capacities of 3,150 kg when single and 2,900 kg when twinned (dual), corresponding respectively to the load indices 148 and 145 shown in Annex 4 to this Regulation;

Having a reference speed of 100 km/h corresponding to speed category symbol: J;

                         Classified in the category of use Snow: M+S;

Able to be used additionally at 120 km/h (speed category symbol L) with a load capacity of 3,000 kg when single and 2,725 kg when twinned (dual), corresponding respectively to the load indices 145 and 143 shown in Annex 4 to this Regulation;

                         Capable of being fitted without inner tube: "TUBELESS";

Manufactured during the twenty-fifth week of the year 2003, and

Requiring to be inflated to 620 kPa for load/speed endurance tests, for which the PSI symbol is 90.

2.                      In the particular case of tyres having a tyre to rim fitment configuration "A", the marking shall be in the form of the following example:

235-700 R 450A

Where:

235      is the nominal section width in mm

700      is the outer diameter expressed in mm

R          is an indication of the structure of the tyre - see paragraph 3.1.4. of this Regulation

450      is the nominal diameter of the rim expressed in mm

A          is the tyre to rim fitment configuration.

The marking of the load index, speed category symbol, date of manufacture and other markings, shall be as given in the example above.

3.                      The positioning and order of the markings constituting the tyre designation shall be the following:

a)         The tyre-size designation as defined in paragraph 2.20. of this Regulation shall be grouped as shown in the example above: 255/70 R 22.5 or 235-700 R 450A;

b)         The service description comprising the load index/indices and the speed symbol shall be placed immediately after the tyre-size designation as defined in paragraph 2.20. of this Regulation;

c)          The symbols "TUBELESS" and "M+S" or "FRT" or "MPT" (and equivalents) may be at a distance from the tyre-size designation

d)         If paragraph 6.2.5. of this Regulation is applied, the additional load-capacity indices and speed-category symbol must be shown inside a circle near the nominal load-capacity indices and speed-category-symbol appearing on the tyre sidewall.

 


Annex 4

List of symbols of load-capacity indices

Load-capacity index

Corresponding maximum mass to be carried (kg)

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

250

257

265

272

280

290

300

307

315

325

335

345

355

365

375

387

400

412

425

437

450

462

475

487

500

515

530

545

560

580

600

615

630

650

670

690

710

730

750

775

800

825

850

875

900

925

950

975

1 000

1 030

1 060

1 090

1 120

1 150

1 180

1 215

1 250

1 285

1 320

1 360

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

1 400

1 450

1 500

1 550

1 600

1 650

1 700

1 750

1 800

1 850

1 900

1 950

2 000

2 060

2 120

2 180

2 240

2 300

2 360

2 430

2 500

2 575

2 650

2 725

2 800

2 900

3 000

3 075

3 150

3 250

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

3 350

3 450

3 550

3 650

3 750

3 875

4 000

4 125

4 250

4 375

4 500

4 625

4 750

4 875

5 000

5 150

5 300

5 450

5 600

5 800

6 000

6 150

6 300

6 500

6 700

6 900

7 100

7 300

7 500

7 750

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

 

8 000

8 250

8 500

8 750

9 000

9 250

9 500

9 750

10 000

10 300

10 600

10 900

11 200

11 500

11 800

12 150

12 500

12 850

13 200

13 600

14 000


Annex 5

Tyre-size designation and dimensions

 

Part I - European tyres

 

Table A

Code designated sizes mounted on 5° tapered rims or flat base rims.

Radial and diagonal constructions

 

Tyre-size designation (+)

Measuring rim width code

Nominal rim diameter

d (mm)

          Outer diameter

          D (mm)

          Section width

          S (mm)

 

 

 

Radial

Diagonal

Radial

Diagonal

 Std. series

 4.00R8 (*)

 4.00R10(*)

 4.00R12(*)4.10/3.50-6

3.50-8

4.40-10

 4.50R8 (*)

 4.50R10(*)

 4.50R12(*)

 5.00R8 (*)

 5.00R10(*)

 5.00R12(*)

 6.00R9

 6.00R14C

 6.00R16(*)

 6.50R10

 6.50R14C

 6.50R16(*)

 6.50R20(*)

 7.00R12

 7.00R14C

 7.00R15(*)

 7.00R16C

 7.00R16

 7.00R20

 7.50R10

 7.50R14C

 7.50R15(*)

 7.50R16(*)

 7.50R17(*)

 7.50R20

 8.25R15

 8.25R16

 8.25R17

 8.25R20

 

 2.50

 3.00

 3.00

2.5

2.5

3.5

3.50

 3.50

 3.50

 3.00

 3.50

 3.50

 4.00

 4.50

 4.50

 5.00

 5.00

 4.50

 5.00

 5.00

 5.00

 5.00

 5.50

 5.50

 5.50

 5.50

 5.50

 6.00

 6.00

 6.00

 6.00

6.50

 6.50

 6.50

 6.50

 

203

254

305

152

203

254

203

254

305

203

254

305

229

356

406

254

356

406

508

305

356

381

406

406

508

254

356

381

406

432

508

381

406

432

508

 

 414

 466

 517

-

-

-

439

 490

 545

 467

 516

 568

 540

 626

 728

 588

 640

 742

 860

 672

 650

 746

 778

 784

 892

 645

 686

 772

 802

 852

 928

836

 860

 886

 962

 

 414

 466

 517

320

394

480

 439

 490

 545

 467

 516

 568

 540

 625

 730

 588

 650

 748

 -

 672

 668

 752

 778

 774

 898

 645

 692

 772

 806

 852

 928

836

 860

 895

 970

 

107

108

108

-

-

 

125

125

125

132

134

134

160

158

170

177

170

176

181

192

180

197

198

198

198

207

195

212

210

210

210

230

230

230

230

 

107

108

108

95

103

124

125

125

128

132

134

137

160

158

170

177

172

176

-

192

182

198

198

198

198

207

192

212

210

210

213

234

234

234

234

 9.00R15

 9.00R16(*)

 9.00R20

10.00R15

10.00R20

10.00R22

11.00R16

11.00R20

11.00R22

11.00R24

12.00R20

12.00R22

12.00R24

13.00R20

14.00R20

14.00R24

16.00R20

 80 Series

 12/80 R 20

 13/80 R 20

 14/80 R 20

 14/80 R 24

 14.75/80 R 20

 15.5/80 R 20

 

6.00

 6.50

 7.00

 7.50

 7.50

 7.50

 6.50

 8.00

 8.00

 8.00

 8.50

 8.50

 8.50

 9.00

10.00

10.00

13.00

 

 8.50

 9.00

10.00

10.00

10.00

10.00

381

406

508

381

508

559

406

508

559

610

508

559

610

508

508

610

508

 

508

508

508

610

508

508

840

 912

1018

 918

1052

1102

 980

1082

1132

1182

1122

1174

1226

1176

1238

1340

1370

 

1008

1048

1090

1192

1124

1158

840

 900

1012

 918

1050

1102

 952

1080

1130

1180

1120

1174

1220

1170

1238

1340

1370

 

-

-

-

-

-

-

249

246

258

275

275

275

279

286

286

286

313

313

313

336

370

370

446

 

305

326

350

350

370

384

249

252

256

275

275

275

272

291

291

291

312

312

312

342

375

375

446

 

-

-

-

-

-

-

 Wide Base Tyres for Multipurpose Trucks

 

  7.50 R 18 MPT

 10.5 R 18 MPT

 10.5 R 20 MPT

 12.5 R 18 MPT

 12.5 R 20 MPT

 14.5 R 20 MPT

 14.5 R 24 MPT

 

5.50

9

9

11

11

11

11

457

457

508

457

508

508

610

 885

 905

 955

 990

1040

1095

1195

 

276

276

330

330

362

362

208

270

270

325

325

355

355

(+)    Tyres in diagonal construction are identified by an hyphen in place of the letter 'R' (e.g. 5.00-8).

(*)     The tyre-size designation may be supplemented with the letter 'C' (e.g. 6.00-16C).


 

Table B

Code designated sizes mounted on 15° tapered rims - Radial

Tyre-size designation

Measuring rim width code

Nominal rim diameter

d (mm)

Outer diameter

D (mm)

Section width

S (mm)

 7 R 17.5 (*)

 7 R 19.5

 8 R 17.5 (*)

 8 R 19.5

 8 R 22.5

 8.5 R 17.5

 9 R 17.5

 9 R 19.5

 9 R 22.5

 9.5 R 17.5

 9.5 R 19.5

10 R 17.5

10 R 19.5

10 R 22.5

11 R 22.5

11 R 24.5

12 R 22.5

13 R 22.5

15 R 19.5

15 R 22.5

16.5 R 19.5

16.5 R 22.5

18 R 19.5

18 R 22.5

70 Series

10/70 R 22.5

11/70 R 22.5

12/70 R 22.5

13/70 R 22.5

 

 5.25

 5.25

 6.00

 6.00

 6.00

 6.00

 6.75

 6.75

 6.75

 6.75

 6.75

 7.50

 7.50

 7.50

 8.25

 8.25

 9.00

 9.75

11.75

11.75

13.00

13.00

14.00

14.00

 

 7.50

 8.25

 9.00

 9.75

445

495

445

495

572

445

445

495

572

445

495

445

495

572

572

622

572

572

495

572

495

572

495

572

 

572

572

572

572

 752

 800

 784

 856

 936

 802

 820

 894

 970

 842

 916

 858

 936

1020

1050

1100

1084

1124

 998

1074

1046

1122

1082

1158

 

 928

 962

1000

1033

185

185

208

208

208

215

230

230

230

240

240

254

254

254

279

279

300

320

387

387

425

425

457

457

 

254

279

305

330

                         (*)        The tyre-size designation may be supplemented with the letter 'C' (e.g. 7 R 17.5C).


 

Table C

Tyres for light commercial vehicles - Radial and diagonal constructions

Tyre-size designation (+)

Measuring rim width code

Nominal rim diameter

d (mm)

Outer diameter

D (mm)

Section width

S (mm)

 

 

 

Radial

Diagonal

Radial

Diagonal

 Metric Designated

 

 145 R 10 C

 145 R 12 C

 145 R 13 C

 145 R 14 C

 145 R 15 C

 155 R 12 C

 155 R 13 C

 155 R 14 C

 165 R 13 C

 165 R 14 C

 165 R 15 C

 175 R 13 C

 175 R 14 C

 175 R 16 C

 185 R 13 C

 185 R 14 C

 185 R 15 C

 185 R 16 C

 195 R 14 C

 195 R 15 C

 195 R 16 C

 205 R 14 C

 205 R 15 C

 205 R 16 C

 215 R 14 C

 215 R 15 C

 215 R 16 C

 245 R 16 C

 17 R 15 C

 17 R 380 C

 17 R 400 C

 19 R 400 C

4.00

4.00

4.00

4.00

4.00

4.50

4.50

4.50

4.50

4.50

4.50

5.00

5.00

5.00

5.50

5.50

5.50

5.50

5.50

5.50

5.50

6.00

6.00

6.00

6.00

6.00

6.00

7.00

5.00

5.00

150 mm

150 mm

254

305

330

356

381

305

330

356

330

356

381

330

356

406

330

356

381

406

356

381

406

356

381

406

356

381

406

406

381

381

400

400

492

542

566

590

616

550

578

604

596

622

646

608

634

684

624

650

674

700

666

690

716

686

710

736

700

724

750

798

678

678

698

728

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

798

-

-

-

-

147

147

147

147

147

157

157

157

167

167

167

178

178

178

188

188

188

188

198

198

198

208

208

208

218

218

218

248

178

178

186

200

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

248

-

-

-

-

 Code Designated

 

 5.60 R 12 C

 6.40 R 13 C

 6.70 R 13 C

 6.70 R 14 C

 6.70 R 15 C

4.00

5.00

5.00

5.00

5.00

305

330

330

356

381

570

648

660

688

712

572

640

662

688

714

150

172

180

180

180

148

172

180

180

180

                         (+)    Tyres in diagonal construction are identified by an hyphen in place of the letter 'R' (e.g. 145-10 C).

Table D

Tyres for special applications - Radial and diagonal construction

Tyre-size designation (+)

Measuring rim width code

Nominal rim diameter

d (mm)

Outer diameter

D (mm)

Section width S (mm)

 Code Designated

 

 15x4 1/2-8

 16x6-8

16.5x6.5-8

 18x7

 18x7-8

 21x8-9

 21x4

 22x4 1/2

 23x5

 23x9-10

 25x6

 27x10-12

 28x9-15

3.25

 4.33

 5.375

 4.33

 4.33

 6.00

 2.32

 3.11

 3.75

 6.50

 3.75

 8.00

 7.00

203

203

203

203

203

229

330

330

330

254

330

305

381

385

425

411

462

462

535

565

595

635

595

680

690

707

122

152

165

173

173

200

113

132

155

225

170

255

216

 Metric designated

 

 200-15

 250-15

 300-15

 6.50

 7.50

 8.00

381

381

381

730

735

840

205

250

300

                         (+)  Tyres in radial construction are identified by the letter 'R' in place of the hyphen '-' (e.g. 15x4 1/2 R 8).


Part II - United States tyres

 

-           Tolerances shown at the bottom of the tables apply in place of those shown in paragraphs 6.1.4.2. and 6.1.5.3.

-           Outer diameters are listed for the various categories of use: Normal, Snow, Special.

 

Table A

Tyres for light commercial vehicles (LT tyres)

Diagonal and radial

Tyre-size designation1

Measuring rim width code

Nominal rim diameter

d(mm)

Outer diameter
D (mm)2

 

Normal

Snow

Section width
S (mm)3

6.00-16LT

4.50

406

732

743

173

6.50-16LT

4.50

406

755

767

182

6.70-16LT

5.00

406

722

733

191

7.00-13LT

5.00

330

647

658

187

7.00-14LT

5.00

356

670

681

187

7.00-15LT

5.50

381

752

763

202

7.00-16LT

5.50

406

778

788

202

7.10-15LT

5.00

381

738

749

199

7.50-15LT

6.00

381

782

794

220

7.50-16LT

6.00

406

808

819

220

8.25-16LT

6.50

406

859

869

241

9.00-16LT

6.50

406

890

903

257

 

 

 

 

 

 

G78-15LT

6.00

381

711

722

212

H78-15LT

6.00

381

727

739

222

L78-15LT

6.50

381

749

760

236

L78-16LT

6.50

406

775

786

236

 

 

 

 

 

 

7-14.5LT4

6.00

368

677

 

185

8-14.5LT4

6.00

368

707

 

203

9-14.5LT4

7.00

368

711

 

241

7-17.5LT

5.25

445

758

769

189

8-17.5LT

5.25

445

788

799

199

                         1     Tyres in Radial construction are identified by the letter "R" in place of "-" (e.g. 6.00 R 16LT).

                         2     Coefficient "b" for the calculation of Dmax: 1.08.

                         3     Overall width may exceed this value up to +8 per cent.

                         4     The suffix "MH"' may replace "LT" in the tyre-size designation (e.g. 7-14.5 MH).


 

Table B

Tyres for light commercial vehicles (high flotation tyres)

Diagonal and radial

Tyre-size designation1

 

Measuring rim width code

Nominal rim diameter

d (mm)

Outer diameter
D (mm)2

Section width
S (mm)3

 

Normal

Snow

9-15LT

8.00

381

744

755

254

10-15LT

8.00

381

773

783

264

11-15LT

8.00

381

777

788

279

 

 

 

 

 

 

24x7.50-13LT

6.00

330

597

604

191

27x8.50-14LT

7.00

356

674

680

218

28x8.50-15LT

7.00

381

699

705

218

29x9.50-15LT

7.50

381

724

731

240

30x9.50-15LT

7.50

381

750

756

240

31x10.50-15LT

8.50

381

775

781

268

31x11.50-15LT

9.00

381

775

781

290

31x12.50R15LT

10.00

381

775

781

318

31x13.50-15LT

11.00

381

775

781

345

31x15.50-15LT

12.00

381

775

781

390

32x11.50-15LT

9.00

381

801

807

290

33x9.50 R15LT

7.50

381

826

832

240

33x10.50R15LT

8.50

381

826

832

268

33x10.50R17LT

8.50

432

826

832

268

33x10.50R18LT

8.50

457

826

832

268

33x11.50R18LT

9.00

457

826

832

290

33x12.50-15LT

10.00

381

826

832

318

33x12.50R17LT

10.00

432

826

832

318

33x12.50R18LT

10.00

457

826

832

318

33x12.50R20LT

10.00

508

826

832

318

33x12.50R22LT

10.00

559

826

832

318

33x13.50R15LT

11.00

381

826

832

345

33x15.50R15LT

12.00

381

826

832

390

34x10.50R17LT

8.50

432

851

858

268

34x12.50R18LT

10.00

457

851

858

318

35x12.50-15LT

10.00

381

877

883

318

35x12.50R17LT

10.00

432

877

883

318

35x12.50R18LT

10.00

457

877

883

318

35x12.50R20LT

10.00

508

877

883

318

35x12.50R22LT

10.00

559

877

883

318

35x13.50R15LT

11.00

381

877

883

345

35x13.50R18LT

11.00

457

877

883

345

35x13.50R20LT

11.00

508

877

883

345

35x14.50R15LT

12.00

381

877

883

372

36x13.50R18LT

11.00

457

902

908

345

36x14.50R15LT

12.00

381

902

908

372

36x14.50R17LT

12.00

432

902

908

372

36x14.50R18LT

12.00

457

902

908

372

36x15.50R15LT

12.00

381

902

908

390

37x12.50-15LT

10.00

381

928

934

318

37x12.50 R17LT

10.00

432

928

934

318

37x12.50R18LT

10.00

457

928

934

318

37x12.50R20LT

10.00

508

928

934

318

37x12.50R22LT

10.00

559

928

934

318

37x13.50R15LT

11.00

381

928

934

345

37x13.50R17LT

11.00

432

928

934

345

37x13.50R18LT

11.00

457

928

934

345

37x13.50R20LT

11.00

508

928

934

345

37x13.50R22LT

11.00

559

928

934

345

37x13.50R24LT

11.00

610

928

934

345

37x14.50-15LT

12.00

381

928

934

372

38x13.50R17LT

11.00

432

953

959

345

38x13.50R20LT

11.00

508

953

959

345

38x13.50R24LT

11.00

610

953

959

345

38x14.50R17LT

12.00

432

953

959

372

38x14.50R18LT

12.00

457

953

959

372

38x14.50R20LT

12.00

508

953

959

372

38x15.50R15LT

12.00

381

953

959

390

38x15.50R17LT

12.00

432

953

959

390

38x15.50R18LT

12.00

457

953

959

390

38x15.50R20LT

12.00

508

953

959

390

39x13.50R17LT

11.00

432

978

985

345

40x13.50R17LT

11.00

432

1004

1010

345

40x13.50R20LT

11.00

508

1004

1010

345

40x14.50R17LT

12.00

432

1004

1010

372

40x14.50R18LT

12.00

457

1004

1010

372

40x14.50R20LT

12.00

508

1004

1010

372

40x15.50R20LT

12.00

508

1004

1010

390

40x15.50R22LT

12.00

559

1004

1010

390

40x15.50R24LT

12.00

610

1004

1010

390

42x14.50R17LT

12.00

432

1055

1061

372

42x14.50R20LT

12.00

508

1055

1061

372

 

8.00-16.5LT

6.00

419

720

730

203

8.75-16.5LT

6.75

419

748

759

222

9.50-16.5LT

6.75

419

776

787

241

10-16.5LT

8.25

419

762

773

264

12-16.5LT

9.75

419

818

831

307

 

30x9.50-16.5LT

7.50

419

750

761

240

31x10.50-16.5LT

8.25

419

775

787

266

33x12.50-16.5LT

9.75

419

826

838

315

35x12.50 R16.5LT

10.00

419

877

883

318

37x12.50-16.5LT

9.75

419

928

939

315

37x14.50-16.5LT

11.25

419

928

939

365

1     Tyres in Radial construction are identified by the letter "R" in place of "-" (e.g.       24x7.50 R 13LT).

2     Coefficient 'b' for the calculation of Dmax: 1.07.

3     Overall width may exceed this value up to +7 per cent.

 

 

 


 

Table C

Code designated tyres mounted on 5° tapered or flat base rims

Diagonal and radial

Tyre-size designation1

Measuring rim width code

Nominal rim diameter
d (mm)

Outer diameter
D (mm2

 

Normal

 

Section width
S (mm)3

 

(a)

(b)

Snow

 

6.50-20

5

508

878

 

893

184

 

7.00-15TR

5.5

381

777

 

792

199

 

7.00-18

5.5

457

853

 

868

199

 

7.00-20

5.5

508

904

 

919

199

 

7.50-15TR

6

381

808

 

825

215

 

7.50-17

6

432

859

 

876

215

 

7.50-18

6

457

884

 

901

215

 

7.50-20

6

508

935

 

952

215

 

8.25-15TR

6.5

381

847

855

865

236

 

8.25-20

6.5

508

974

982

992

236

 

9.00-15TR

7

381

891

904

911

259

 

9.00-20

7

508

1019

1031

1038

259

 

10.00-15TR

7.5

381

927

940

946

278

 

10.00-20

7.5

508

1054

1067

1073

278

 

10.00-22

7.5

559

1104

1118

1123

278

 

11.00-20

8

508

1085

1099

1104

293

 

11.00-22

8

559

1135

1150

1155

293

 

11.00-24

8

610

1186

1201

1206

293

 

11.50-20

8

508

1085

1099

1104

296

 

12.00-20

8.5

508

1125

 

1146

315

 

12.00-24

8.5

610

1226

 

1247

315

 

14.00-20

10

508

1241

 

1266

375

 

14.00-24

10

610

1343

 

1368

375

 

1     Tyres in Radial construction are identified by the letter "R" in place of "-"(e.g. 6.50 R 20).

2     Coefficient 'b' for the calculation of Dmax : 1.06 . Category of use:   Normal Service tyres: (a) Highway tread   (b) Heavy tread

3     Overall width may exceed this value up to +6 per cent.


Table D

Code designated tyres for special services

Diagonal and radial

Tyre-size designation

Measuring rim width code

Nominal rim diameter
d (mm)

Outer diameter
D (mm)1

 

(a)

(b)

Section width S (mm) 2

 

10.00-20ML

7.5

508

1073

1099

278

 

11.00-22ML

8

559

1155

1182

293

 

13.00-24ML

9

610

1302

 

340

 

14.00-20ML

10

508

1266

 

375

 

14.00-24ML

10

610

1368

 

375

 

 

 

 

 

 

 

 

15-19.5ML

11.75

495

1019

 

389

 

24 R 21

18

533

1372

-

610

 

1    Coefficient "b" for the calculation of Dmax : 1.06.

     Category of use:  special (a) Traction tread (b) Heavy tread

2    Overall width may exceed this value up to +8 per cent.


Table E

Code designated tyres mounted on 15° tapered rims

Diagonal and radial

Tyre-size designation1

Measuring rim width code

Nominal rim diameter
d (mm)

Outer diameter
D (mm)2

 

Normal

 

 

(a)

(b)

Snow

Section width
S (mm)3

8-19.5

6.00

495

859

 

876

203

8-22.5

6.00

572

935

 

952

203

9-22.5

6.75

572

974

982

992

229

10-22.5

7.50

572

1019

1031

1038

254

11-22.5

8.25

572

1054

1067

1073

279

11-24.5

8.25

622

1104

1118

1123

279

12-22.5

9.00

572

1085

1099

1104

300

12-24.5

9.00

622

1135

1150

1155

300

12.5-22.5

9.00

572

1085

1099

1104

302

12.5-24.5

9.00

622

1135

1150

1155

302

 

 

 

 

 

 

 

14-17.5

10.50

445

907

 

921

349 (-)

15-19.5

11.75

495

1005

 

1019

389 (-)

15-22.5

11.75

572

1082

 

1095

389 (-)

16.5-22.5

13.00

572

1128

 

1144

425 (-)

18-19.5

14.00

495

1080

 

1096

457 (-)

18-22.5

14.00

572

1158

 

1172

457 (-)

1   Tyres in Radial construction are identified by the letter "R" in place of "-" (e.g. 8R19.5).

2   Coefficient "b" for the calculation of Dmax : 1.05.

      Category of use:  Normal Service tyres:  (a) Highway tread (b) Heavy tread

3    Overall width may exceed this value up to +6 per cent

      (-) Overall width may exceed this value up to +5 per cent.


Annex 6

Method of measuring pneumatic tyres

1.                      The tyre is mounted on the measuring rim specified by the manufacturer pursuant to paragraph 4.1.11. of this Regulation and is inflated to a pressure specified by the manufacturer pursuant to paragraph 4.1.12. of this Regulation.

2.                      The tyre fitted on its rim is conditioned to the ambient temperature of the laboratory for at least 24 hours.

3.                      The pressure is readjusted to the value specified in paragraph 1. above.

4.                      The overall width is measured by caliper at six equally-spaced points, account being taken of the thickness of the protective ribs or bands.  The highest measurement so obtained is taken as the overall width.

5.                      The outer diameter is calculated from the maximum circumference.

 


Annex 7

Procedure for load/speed endurance tests

1.                      Preparing the tyre

1.1.                  Mount a new tyre on the test rim specified by the manufacturer pursuant to paragraph 4.1.11. of this Regulation.

1.2.                  Use a new inner tube or combination of inner tube, valve and flap (as required) when testing tyres with inner tubes.

1.3.                  Inflate the tyre to the pressure corresponding to the pressure index specified by the manufacturer pursuant to paragraph 4.1.12. of this Regulation.

1.4.                  Condition the tyre-and-wheel assembly at test-room temperature for not less than three hours.

1.5.                  Readjust the tyre pressure to that specified in paragraph 1.3. above.

2.                      Test procedure

2.1.                  Mount the tyre-and-wheel assembly on the test axle and press it against the outer face of a smooth power-driven test drum 1.70 m " 1 per cent in diameter having a surface at least as wide as the tyre tread.

2.2.                  Apply to the test axle a series of test loads expressed in per cent of the load indicated, in Annex 4 to this Regulation, opposite the load index engraved on the sidewall of the tyre, in accordance with the test programme below.  Where the tyre has load-capacity indices for both single and twinned utilization, the reference load for single utilization shall be taken as the basis for the test loads.

2.2.1.               In the case of tyres with a speed category symbol above P, test procedures are as specified in paragraph 3.

2.2.2.               For all other tyre types, the endurance test programme is shown in Appendix 1 to this annex.

2.3.                  The tyre pressure must not be corrected throughout the test and the test load must be kept constant throughout each of the three test stages.

2.4.                  During the test the temperature in the test-room must be maintained at between 20 °C and 30 °C or at a higher temperature if the manufacturer so agrees.

2.5.                  The endurance-test programme shall be carried out without interruption.

3.                      Load/speed test programme for tyre with speed category symbol Q and above

3.1.                  This programme applies to:

3.1.1.               All tyres marked with load capacity index in single 121 or less.

3.1.2.               Tyres marked with load capacity index in single 122 and above and with the additional marking "C", or "LT", referred to in paragraph 3.1.13. of this Regulation.

3.2.                  Load placed on the wheel as a percentage of the load corresponding to the load index:

3.2.1.               90 per cent when tested on a test drum 1.70 m " 1 per cent in diameter;

3.2.2.               92 per cent when tested on a test drum 2.0 m " 1 per cent in diameter.

3.3.                  Initial test speed: speed corresponding to the speed category symbol less 20 km/h;

3.3.1.               Time to reach the initial test speed 10 min.

3.3.2.               Duration of the first step = 10 min.

3.4.                  Second test speed: speed corresponding to the speed category symbol less 10 km/h;

3.4.1.               Duration of the second step = 10 min.

3.5.                  Final test speed: speed corresponding to the speed category symbol:

3.5.1.               Duration of the final step = 30 min.

3.6.                  Total test duration: 1 h.

4.                      Equivalent test methods

                                      If a method other than that described in paragraph 2. above is used, its equivalence must be demonstrated.

 


Annex 7 - Appendix 1

Endurance-test programme

Load index

Tyre speed
category symbol

          Test-drum speed

Load placed on the wheel as a percentage of the load corresponding to the load index

Radial-ply
km.h-1

Diagonal (bias-ply)
km.h-1

7 h.

16 h.

24 h.

122 or more

F

G

J

K

L

M

 32

 40

 48

 56

 64

 72

32

32

40

48

-

-

 

 

 

          66 %

 

 

 

 

84 %

 

 

 

101 %

121 or less

F

G

J

K

 32

 40

 48

 56

32

40

48

56

 

 

 

 

L

 

M

N

P

 64

 

 80

 88

 96

56

 

64

-

-

   70 %

    4 h.

75 %

75 %

75 %

   88 %  

     6 h.

97 %

97 %

97 %

106 %

 

114 %

114 %

114 %

Notes:

(1)  "Special-use" tyres (see paragraph 2.1.3. of this regulation) should be tested at a speed equal to 85 per cent of the speed prescribed for equivalent normal tyres.

(2)  Tyres with load index 122 or more, speed category symbols N or P and the additional marking "LT", or "C", referred to in paragraph 3.1.13. of this regulation, shall be tested with the same programme as specified in the above table for tyres with load index 121 or less.

 

 


Annex 7 - Appendix 2

Relation between the pressure index and the units of pressure

Pressure

Index ("PSI")

          Bar

          kPa

 20

 25

 30

 35

 40

 45

 50

 55

 60

 65

 70

 75

 80

 85

 90

 95

100

105

110

115

120

125

130

135

140

145

150

...

 

 1.4

 1.7

 2.1

 2.4

 2.8

 3.1

 3.4

 3.8

 4.1

 4.5

 4.8

 5.2

 5.5

 5.9

 6.2

 6.6

 6.9

 7.2

 7.6

 7.9

 8.3

 8.6

 9.0

 9.3

 9.7

10.0

10.3

...

 

 140

 170

 210

 240

 280

 310

 340

 380

 410

 450

 480

 520

 550

 590

 620

 660

 690

 720

 760

 790

 830

 860

 900

 930

 970

1000

1030

...

 

 

 


Annex 8

Variation of load capacity with speed commercial vehicles tyres - Radial and diagonal

(See paras. 2.27. and 2.29.)

 

Variation of load capacity (per cent)

Speed

(km/h)

All load indices

Load indices

1221

Load indices 1211

 

Speed category symbol

Speed category symbol

Speed category symbol

 

F

G

J

K

L

M

L

M

N

P2

0

 +150

+150

+150

+150

+150

+150

+110

+110

+110

+110

5

 +110

+110

+110

+110

+110

+110

+90

+90

+90

+90

10

  +80

+80

+80

+80

+80

+80

+75

+75

+75

+75

15

  +65

+65

+65

+65

+65

+65

+60

+60

+60

+60

20

  +50

+50

+50

+50

+50

+50

+50

+50

+50

+50

25

  +35

+35

+35

+35

+35

+35

+42

+42

+42

+42

30

  +25

+25

+25

+25

+25

+25

+35

+35

+35

+35

35

  +19

+19

+19