มอก. 2719–2558 
-1- 
 มาตรฐานผลิตภัณฑ์อุตสาหกรรม  
ยางล้อแบบสูบลมสําหรับรถยนต์เชิงพาณิชย์และ
ส่วนพ่วง 
ขอบข่าย 
มาตรฐานผลิตภัณฑ์อุตสาหกรรมนี้ ครอบคลุมเฉพาะยางล้อแบบสูบลมใหม่ ที่ออกแบบมาเพ ื่อใช้สําหรับรถยนต์เชิง
พาณิชย์ ประเภท  M2 M3 N O 3 และ O4 เป็นหลัก แต่ไม่ครอบคลุมถึงยางล้อที่มีสัญลักษณ์ประเภทความเร ็วต่ํากว่า 80 
km/h 
บทนิยาม 
ความหมายของค ําที่ใช้ในมาตรฐานผล ิตภัณฑ์อุตสาหกรรมนี้ ให้เป็นไปตาม  UN Regulation No.54 Revision 3    
ข้อ 2.  
เครื่องหมายและฉลาก  
การแสดงเครื่องหมายและฉลากในมาตรฐานผล ิตภัณฑ์อุตสาหกรรมนี้ ให้เป็นไปตาม  UN Regulation No.54 
Revision 3 ข้อ 3. และที่แก้ไขเพิ่มเติมตาม Corrigendum 2 ยกเว้นข้อ 3.2 ไม่ใช้ และข้อ 3.4 ไม่ใช้ แต่ให้เป็นไปตาม
ข้อความต่อไปนี้แทน 
3.4 การแสดงเครื่องหมายและฉลากตามข ้อ 3.1 เครื่องหมายมาตรฐานผล ิตภัณฑ์อุตสาหกรรมและเลขท ี่ มอก. (ยกเว้น
ข้อ 3.1.1 และ 3.1.13) ต้องประทับบนแม่พิมพ์หรือบนยาง  ให้สามารถอ่านออกได้ง่าย ชัดเจน และต้องแสดงบนแก ้ม
ยางอย่างน้อย 1 ด้าน 
คุณลักษณะที่ต้องการ  
คุณลักษณะที่ต้องการในมาตรฐานผล ิตภัณฑ์อุตสาหกรรมนี้ ให้เป็นไปตาม  UN Regulation No.54 Revision 3 ข้อ 6.  
การทดสอบ  
การทดสอบและการหาค ่าต่างๆ ในมาตรฐานผล ิตภัณฑ์อุตสาหกรรมนี้ ให้เป็นไปตาม  UN Regulation No.54 
Revision 3  ข้อ 6. และ ANNEX ที่เกี่ยวข้อง 
 
  
 
 มอก.2719–2558 
-2- 
  GE.15- 
  Agreement 
  Concerning the Adoption of Unif orm Technical Prescriptions for 
Wheeled Vehicles, Equipment and Part s 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 Prescriptions
* 
(Revision 2, including the amendments which entered into force on 16 October 1995) 
_________ 
  Addendum 53 – Regulation No. 54   Revision 3 - Amendment 1 
Supplement 19 to the original version of the Regulation – Date of entry into force: 22 January 2015 
  Uniform provisions concerning the approval of pneumatic tyres for 
commercial vehicles and their trailers 
 
_________ 
 
UNITED NATIONS 
  
 * Former title of the Agreement: Agreement Concerning the Adoption of Uniform Conditions of 
Approval and Reciprocal Recognition of Approval for Motor Vehicle Equipm ent and Parts, done at 
Geneva on 20 March 1958.  E/ECE/324/Rev.1/Add.53/Rev.3/Amend.1 −E/ECE/TRANS/505/Rev.1/Add.53/Rev.3/Amend.1
   
  3 February 2015 
มอก. 2719–2558  
                                                              
-3-E/ECE/324/Rev.1/Add. 53/Rev.3/Amend.1 
E/ECE/TRANS/505/Rev.1/ Add.53/Rev.3/Amend.1 
2 มอก. 2719–2558 
 
Annex 5,  
Part I, Table A, insert the following entries: 
" 
Tyre-size 
designation (+) Measuring 
rim width 
code Nominal rim 
diameter
d (mm) Outer diameter
D (mm) Section width 
S (mm) 
   Radial Diagonal Radial Diagonal 
… 
4.10/3.50-6 3.50-8 
4.40-10 2.5 
2.5 
3.5 152 
203 
254 - 
- 
- 320 
394 
480 - 
- 
- 95 
103 
124 
" 
Annex 5,  
Part I, Table D, insert the following entry: 
" 
Tyre-size  
designation (+) Measuring 
rim width 
code Nominal rim 
diameter
d (mm) Outer diameter
D (mm) Section width 
S (mm) 
Code Designated … 
… 
16.5x6.5-8 
… 5.375 203 411 165 
" 
    
  
                                                              
-4-GE.14- 
  Agreement 
  Concerning the Adoption of Unif orm Technical Prescriptions for 
Wheeled Vehicles, Equipment and Part s 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 Prescriptions
* 
(Revision 2, including the amendments which entered into force on 16 October 1995) 
_________ 
  Addendum 53 – Regulation No. 54   Revision 3 - Corrigendum 2 
Corrigendum 2 to Revision 3 of the Regulation – Date of entry into force: 25 June 2014 
  Uniform provisions concerning the approval of pneumatic tyres for 
commercial vehicles and their trailers 
_________  
 
 
UNITED NATIONS 
  
 * Former title of the Agreement: Agreement Concerning the Adoption of Uniform Conditions of 
Approval and Reciprocal Recognition of Approval for Motor Vehicle Equipm ent and Parts, done at 
Geneva on 20 March 1958.  E/ECE/324/Rev.1/Add.53/Rev.3/Corr.2 −E/ECE/TRANS/505/Rev.1/Add.53/Rev.3/Corr.2
   
  25 August 2014 
มอก. 2719–2558  
                                                              
-5-E/ECE/324/Rev.1/A dd.53/Rev.3/Corr.2 
E/ECE/TRANS/505/Rev.1/ Add.53/Rev.3/Corr.2 
 
2 มอก. 2719–2558 
Paragraph 3.1.12.,  correct to read:  
"3.1.12. The inscription "MPT " (or alternatively "ML" or "ET") and/or "POR" if the 
tyre is classified in the category of use "special"."  
    
  
                                                              
-6-GE.13- 
  Agreement 
  Concerning the Adoption of Unif orm Technical Prescriptions for 
Wheeled Vehicles, Equipment and Part s 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 Prescriptions
* 
(Revision 2, including the amendments which entered into force on 16 October 1995) 
_________ 
  Addendum 53 – Regulation No. 54   Revision 3 - Corrigendum 1 
Corrigendum 1 to Revision 3 of the Regulation (Erratum by the secretariat)  
  Uniform provisions concerning the approval of pneumatic tyres for 
commercial vehicles and their trailers 
_________  
 
 
UNITED NATIONS 
  
 * Former title of the Agreement: Agreement Concerning the Adoption of Uniform Conditions of 
Approval and Reciprocal Recognition of Approval for Motor Vehicle Equipm ent and Parts, done at 
Geneva on 20 March 1958.  E/ECE/324/Rev.1/Add.53/Rev.3/Corr.1 −E/ECE/TRANS/505/Rev.1/Add.53/Rev.3/Corr.1.
   
   18 December 2014  
มอก. 2719–2558  
                                                              
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2 มอก. 2719–2558 
Paragraph 3.1.9., for the existing symbol substitute   
Annex 7,  
Appendix 2 , correct to read: 
" 
Pressure 
Index ("PSI")  Bar kPa 
 20 1.4 140 
 25  1.7  170 
 30  2.1  210 
 35  2.4  240 
 40  2.8  280 
 45  3.1  310 
 50  3.4  340 
 55  3.8  380 
 60  4.1  410 
 65  4.5  450 
 70  4.8  480 
 75  5.2  520 
 80  5.5  550 
 85  5.9  590 
 90  6.2  620 
 95  6.6  660 
100  6.9  690 
105  7.2  720 
110  7.6  760 
115  7.9  790 
120  8.3  830 
125  8.6  860 
130  9.0  900 
135  9.3  930 
140  9.7  970 
145 10.0 1 000 
150 10.3 1 030 
... ... ... 
" 
    
  
                                                              
-8-GE.13- 
 
  Agreement  
  Concerning the Adoption of Unif orm Technical Prescriptions for 
Wheeled Vehicles, Equipment and Part s 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 Prescriptions * 
(Revision 2, including the amendments which entered into force on 16 October 1995) 
_________ 
  Addendum 53: Regulation No. 54 
  Revision 3 
Incorporating all valid text up to: 
Corrigendum 1 to Supplement 15 to the original ve rsion 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 vers ion 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 vers ion of the Regulation - Date of entry into force: 27 January 2013 
  Uniform provisions concerning the approval of pneumatic tyres for 
commercial vehicles and their trailers 
_________ 
UNITED NATIONS
  
 * Former title of the Agreement: Agreement Concerning the Adoption of Uniform Conditions of 
Approval and Reciprocal Recognition of Approval for Motor Vehicle Equipm ent and Parts, done at 
Geneva on 20 March 1958. E/ECE/324/Rev.1/Add.53/Rev.3 −E/ECE/TRANS/505/Rev.1/Add.53/Rev.3
   
 26 March 2013 
มอก. 2719–2558  
                                                              
-9-  มอก. 2719–2558  
                                                              
-10-E/ECE/324/Rev.1/ Add.53/Rev.3 
E/ECE/TRANS/505/Re v.1/Add.53/Rev.3 
 
3 มอก. 2719–2558 
Regulation No. 54 
  Uniform provisions concerni ng the approval of pneumatic 
tyres for commercial vehicles and their trailers 
Contents 
 Page 
 1. Scope ..................................................................................................................... ........................  4 
 2. Definitions ............................................................................................................... ......................  4 
 3. Markings .................................................................................................................. .....................  8 
 4. Application for approval .................................................................................................. .............  10 
 5. Approval .................................................................................................................. ......................  11 
 6. Specifi cations ............................................................................................................ ....................  12 
 7. Modification and extension of approval of a ty re type ..................................................................  1 4 
 8. Conformity of production................................................................................................... ...........  15 
 9. Penalties for non-conf ormity of produc tion ................................................................................ ..  15 
 10. Production defin itively disc ontinued ..................................................................................... ........  15 
 11. Names and addresses of Technical Services responsible for conducting approval tests, and  
of Type Approv al Aut horities .................................................................................................. .....  15 
Annexes  1 Communi catio n .............................................................................................................. ...............  17 
 2 Arrangement of approval mark ............................................................................................... ......  19 
 3 Arrangement of tyre markings ............................................................................................... .......  20 
 4 List of symbols of load-capacity  indices ................................................................................... ....  22 
 5 Tyre-size designa tion and dime nsions ....................................................................................... ...  26 
  Part I - Eu ropean tyres ..................................................................................................... ..............  26 
  Part II - Unite d States tyres ............................................................................................... ............  31 
 6 Method of measur ing pneumatic  tyres ........................................................................................ ..  36 
 7 Procedure for load/s peed endurance tests ................................................................................... ..  37 
  Appendix 1 - Endurance-test programme .....................................................................................  39 
  Appendix 2 - Relation between the pressure  index and the units of pressure ...............................  40 
 8 Variation of load capacity with speed commerci al vehicles tyres - Radi al and diagonal ..............  41 
 9 Communication - Upgrade of service description for the purposes of retreading in  
accordance with Regul ation No . 109 ............................................................................................   43 
  
                                                              
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4 มอก. 2719–2558 
1.  Scope 
This Regulation covers new pneumatic tyres designed primarily for 
vehicles of categories M 2, M 3, N, O 3 and O 41,2.  However, it does not apply 
to tyre types identified by speed category symbols corresponding to speeds below 80 km/h. 
  2.  Definitions 
 For the purposes of this Regulation: 
2.1. " Type of pneumatic tyre " means a category of pn eumatic tyres which do 
not differ in such essential respects as: 
2.1.1. The manufacturer; 2.1.2. Tyre-size designation; 2.1.3. Category of use (normal tyre, snow tyre, special use tyre); 2.1.4. Structure (diagonal (bias-ply); radial); 2.1.5. Speed category; 2.1.6. Load-capacity indices; and 2.1.7. Cross-section; 2.2. Category of use: 2.2.1. " Normal tyre " means a tyre intended for normal, on-road use; 
2.2.2. " 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; 
2.2.3. " 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; 
2.2.3.1. " Professional off-road tyre " is a special use tyre primarily used for service 
in severe off-road conditions; 
2.3. " Structure " of a pneumatic tyre means the technical characteristics of the 
tyre's carcass.  A distinction is made between the following structures in particular: 
2.3.1. " Diagonal " or " bias-ply " describes a pneumatic 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; 
 
 
 1 As defined in the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document 
ECE/TRANS/WP.29/78/Rev.2, para. 2. - www.unece.org/trans/main/wp29/wp29wgs /wp29gen/wp29resolutions.html  
 
2 This Regulation defines requireme nts for tyres as a component.  It  does not limit their installation 
on any categories of vehicles.   
                                                              
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5 มอก. 2719–2558 
2.3.2. " Radial " describes a pneumatic 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; 
2.4. " Bead " means the part of a pneumatic tyre which is of such shape and 
structure as to fit the rim and to hold the tyre on it
3;  
2.5. " Cord " means the strands forming the fabric of the plies in the pneumatic 
tyre3;  
2.6. " Ply" means a layer of rubber-coated parallel cords3;  
2.7. " Carcass " means that part of a pneumatic tyre other than the tread and the 
rubber sidewalls which, wh en inflated, bears the load3;  
2.8. " Tread " means that part of a pneumatic tyre which comes into contact with 
the ground, protects the carcass agains t mechanical damage and contributes 
to ground adhesion3;  
2.9. " Sidewall " means the part of a pneumatic tyre between the tread and the 
area designed to be covered by the rim flange3;  
2.10. " Lower sidewall " means the area included be tween the line of maximum 
section width of the tyre and the area designed to be covered by the rim flange
3;  
2.10.1. However, in case of tyres identified by the "tyre to rim fitment 
configuration" (see paragraph 3.1.11.) symbol "A", it means the area of the 
tyre which is seating on the rim; 
2.11. " Tread groove " means the space between two adjacent ribs and/or blocks 
in the tread pattern3;  
2.12. " Section width (S) " means the linear distance between the outsides of the 
sidewalls of an inflated pneumatic  tyre, excluding elevations due to 
labelling (marking), decoration or protective bands or ribs3;  
2.13. " Over-all width " means the linear distance be tween the outsides of the 
sidewalls of an inflated pneumatic tyre, including labelling (marking), decoration and protective bands or ribs
3; / 
2.14. " Section height (H) " means a distance equal to half the difference between 
the outer diameter of the tyre  and the nominal rim diameter; 
2.15. " 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 (S
1), both dimensions expressed in 
the same units; 
2.16. " Outer diameter (D) " means the overall diameter of an inflated new 
pneumatic tyre3;  
2.17. " Tyre-size designation " means: 
2.17.1. A designation showing: 2.17.1.1. The nominal section width (S
1).  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; 
 
 
 3 See explanatory figure.   
                                                              
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6 มอก. 2719–2558 
2.17.1.2. 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; 
2.17.1.3. 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; 
2.17.1.3.1. 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 
482 
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 
 
2.17.1.4. 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; 
2.18. " Nominal rim diameter (d) " means the diameter of the rim on which a tyre 
is designed to be mounted
3;  
2.19. " Rim" means the support for a tyre-and-tube assembly, or for a tubeless 
tyre, on which support the tyre beads are seated3;   
                                                              
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7 มอก. 2719–2558 
2.20. " 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; 
2.21. " Measuring rim " means the rim on which a tyre must be fitted for 
dimensional measurements; 
2.22. " Test rim " means the rim on which a tyre must be fitted for load/speed 
endurance testing; 
2.23. " Chunking " means the breaking away of pi eces of rubber from the tread; 
2.24. " Cord separation " means the parting of the cords from their coating; 
2.25. " Ply separation " means the parting of adjacent plies; 
2.26. " Tread separation " means the pulling away of the tread from the carcass; 
2.27. " Load-capacity index " means one or two number s which indicate the load 
the tyre can carry in single or in single and dual operation at the speed corresponding to the asso ciated speed category and when operated in 
conformity with the requirements governing utilization specified by the manufacturer.  A type of pneumatic 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; 
2.28. " Speed category " means: 
2.28.1. The speeds, indicated  by a symbol, at which th e tyre can carry the load 
indicated by the associat ed load-capacity index; 
2.28.2. 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 
 
  
 4 For consistency, the symbols and speeds shown in  this table are the same as those for passenger 
cars (as in Regulation No. 30).  They should not be taken to indicate the speeds at which 
commercial vehicles fitted with such tyres may be operated on the roads.   
                                                              
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8 มอก. 2719–2558 
2.29. " 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 pneumatic tyre can withstand when us ed at speeds different from that 
conforming to its nominal-speed-categor y 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; 
2.30. " Void to fill ratio " means the ratio between the area of voids in a reference 
surface and the area of this referen ce surface calculated from the mould 
drawing; 
2.31. " Tyre Class " means one of the following groupings: 
2.31.1. 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"; 
2.31.2. 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. Pneumatic tyres submitted for approval shall display on both sidewalls in 
the case of symmetrical tyres and at l east on the outer sidewall in the case 
of asymmetrical tyres: 
3.1.1. The manufacturer's name or trade mark; 3.1.2. The tyre-size designation as defined in paragraph 2.17. of this Regulation; 3.1.3. An indication of the structure as follows: 3.1.3.1. On diagonal (bias-ply) tyres: no indication, or the letter "D"; 3.1.3.2. On radial-p ly tyres: the letter "R" placed in front of the rim-diameter 
marking and, optionally, the word "RADIAL"; 
3.1.4. The speed-category symbol (or symbols); 3.1.4.1. An indication of the tyre's nominal speed category in the form of the 
symbol prescribed in paragraph 2.28.2. above; 
3.1.4.2. An indication of a second speed category in cases where paragraph 6.2.5. 
below is applied; 
3.1.5. The inscription M+S or M.S or M&S if  the tyre is classified in the category 
of use "snow tyre"; 
3.1.6. The load-capacity indices as defined in paragraph 2.27. of this Regulation; 3.1.7. The word "TUBELESS" if the tyre is designed for use without an inner 
tube;  
                                                              
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9 มอก. 2719–2558 
3.1.8. 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; 
3.1.9. In the case of tyres which can be regrooved, the symbol " Ω" at least 20 mm 
in diameter, or the word "REGROOVABLE", moulded into or on to each sidewall; 
3.1.10. 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; 
3.1.11. In the case of tyres first approved after 1 March 2004 the identification 
referred to in paragraph 2.17.1.4. sha ll be placed only immediately after the 
rim diameter marking referred to in paragraph 2.17.1.3; 
3.1.12. The inscription "MPT" (or alternatively "ML") and /or "POR" if the tyre is 
classified in the category of use "special"; 
ET means Extra Tread, ML stands for Mining and Logging, MPT means 
Multi-Purpose Truck and POR means Professional Off Road
6;  
3.1.13. The suffix "C" or "LT" after the rim diameter marking referred to in 
paragraph 2.17.1.3., and, if applicable, after the tyre to rim fitment configuration referred to in paragraph 2.17.1.4.:  
3.1.13.1. This marking is optional in the case of tyres fitted on 5° drop centre rims, 
suitable for single and dual fitment, ha ving a load capacity index in single 
lower or equal to 121 and destined for the equipment of motor vehicles; 
3.1.13.2. 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; 
3.1.14. The suffix "CP" after the rim diameter marking referred to in 
paragraph 2.17.1.3., and, if applicable, after the tyre to rim fitment configuration referred to in paragraph 2.17.1.4.  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; 
3.1.15. 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 su fficiently 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. 
 
 
 5 Before 1 January 2000, the date of manufacture ma y be indicated by a group of three digits, the 
first two showing the week and the last one the year of manufacture.  
 6 This marking shall only be mandatory for tyre type s approved to this Regulation after the entry into 
force of Supplement 14 to the Regulation.  
                                                              
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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 3.1.11.) 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 pneumatic tyre shall be submitted 
by the holder of the manufacturer's name or trade mark or by his duly accredited representative.  It shall specify: 
4.1.1. The tyre-size designation as defined in paragraph 2.17. of this Regulation; 4.1.2. The manufacturer's name or trade mark; 4.1.3. The category of use (normal or special or snow); 4.1.4. Structure:  diagonal (bias ply) or radial; 4.1.5. The speed category; 4.1.6. The load-capacity indices; 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 2.20. 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 measuring pressure and test pressure index; 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 sh all 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 n ecessary 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.  
                                                              
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  5.  Approval 
5.1. If the type of pneumatic 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 incorpora ting the most recent major technical 
amendments made to the Regulation at the time of issue of the approval.  
The same Contracting Party may not a ssign the same number to another 
type of pneumatic tyre. 
5.3. Notice of approval or of refusal of approval of a type of pneumatic 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 pneumatic 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
7; 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 retreading 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 approv al 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 retreaded 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 retreading production unit that is approved in accordance with Regulation No. 109. 
 
 
 7 The distinguishing numbers of the Contracting Parties to the 1958 Agreement are reproduced in 
Annex 3 to the Consolidated Resolution on th e Construction of Vehicles (R.E.3), document 
ECE/TRANS/WP.29/78/Rev.2/Amend.3 - 
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  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 = S
1 + K (A - A 1), 
 Where: 
S is the "section width" expressed in millimetres 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. 
 A 1 shall be taken to equal S 1 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 3.1.11.) 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 2.17.1.3. above, 
expressed in millimetres; 
S
1 is the nominal section width in millimetres; 
Ra is the nominal aspect ratio; H is the nominal section height in millimetres and is equal to S
1 x 0.01 
Ra. 
 All as in the tyre designation shown on the sidewall of the tyre 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 3.1.11.) symbol "A", the outer diameter shall be that specified in the tyre-size designation as shown on the sidewall of the tyre.  
                                                              
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6.1.3. Method of measuring pneumatic tyres 
 The dimensions of pneumatic 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 pe r cent for diagonal (bias-ply) tyres. 
6.1.4.3. However, for tyres identified by the "tyre to rim fitment configuration" (see 
paragraph 3.1.11.) 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 + (2H x a)  Dmax = d + (2H x b)  Where: 6.1.5.1. For sizes listed in Annex 5 and for tyres identified by the "tyre to rim 
fitment configuration" (see paragraph 3.1.11.) symbol "A", the nominal section height H is equal to: 
H = 0.5 (D-d) - 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 (Dmax) established in conformity with 
the above may be exceeded by 1 per cent. 
6.2. Load/speed endurance test 6.2.1. Each type of pneumatic 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.  
                                                              
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6.2.3. The outer diameter of the tyre, measured six hours after the load/speed 
endurance test, must not differ by mo re 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 pneumatic 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 pneumatic 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 "s pecial 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 'profe ssional 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 pr escribed in paragraph 6. of this 
Regulation. 
7.3. Confirmation or refusal of approva l, 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.  
                                                              
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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 Agreement, Appendix 2 (E/ECE/324-E/ECE/TRANS/505/Rev. 2), with the following requirements: 
8.1. Tyres approved under this Regulation shall be so manufactured as to 
conform to the type approved, by m eeting 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 contro l 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 pneumatic 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 
pneumatic tyre approved in accordance w ith 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 Parties to the 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 refusal or withdrawal of approval, issued in other countries, are to be sent.  
                                                              
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11.2. The Parties to the Agreement which apply this Regulation may use 
laboratories of tyre manufacturers an d may designate, as approved test 
laboratories, those among them which are situated on their territory or on the territory of another Party to the Agreement subject to a preliminary agreement to this proced ure by the competent Type Approval Authority of 
the latter. 
11.3. Where a Party to the Agreement app lies 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) 
 
 
 
 
                                                              
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Annex 1 
 
17 มอก. 2719–2558 
Annex 1 
  Communication 
(Maximum format: A4 (210 x 297 mm)) 
 
1 
concerning2: Approval granted 
 Approval extended  Approval refused  Approval withdrawn  Production definitively discontinued of a type of pneumatic tyre for motor vehicles pursuant to Regulation No. 54 
 
Approval No. .......................................... Extension No. ............................................... 1. Manufacturer's name or trad e mark(s) on the tyre ty pe: ..........................................  
2. Tyre type designation by the manufacturer: ............................................................  
3. Manufacturer's name and address: ..........................................................................    ............................................................................................................................. ....  
4. If applicable, name and address of manufacturer's representative: .........................    ............................................................................................................................. ....  
  ............................................................................................................................. ....  
5. Summarized description: 5.1. Size of tyre ............................................................................................................. .  
5.2. Category of use:  normal/snow/special
2 
5.3. Structure:  diagonal (bias-ply)/radial2 
5.4. Tyre class: C2 / C32 
5.5. Speed category symbol: 5.5.1. Nominal: ............................................................................................................... ...  
5.5.2. Additional (if applicable):  ......................................................................................  
 
 
 1 Distinguishing number of the country which has granted/extended/refused/ withdrawn approval (see 
approval provisions in the Regulation).  
 2 Strike out what does not apply.  
 issued by :  Name of administration: 
...................................... ...................................... 
......................................  
                                                              
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18 มอก. 2719–2558 
5.6. Load-capacity indices: 
5.6.1. Corresponding to nominal speed: si ngle ................... twinned (dual) .....................  
5.6.2. Corresponding to a dditional speed: single ........ ......... twinne d (dual) ....................  
6. Technical Service and, where applicable , test laboratory approved for purposes 
of approval or of verifi cation of conf ormity: ...........................................................  
  ............................................................................................................................. ....  
7. Date of report issued  by that Service: ......................................................................  
8. Number of report issu ed by that Service: ................................................................  
9. Reasons(s) of extens ion (if appli cable): ..................................................................  
10. Any remarks: ...........................................................................................................  11. Pl ace: .................................................................................................................... ...  
12. Date: ..................................................................................................................... ...  
13. Signature: ................................................................................................................   
14. Annexed to this communication is a list of documents in the approval file 
deposited at the Type Approval Author ities having delivered the approval and 
which can be obtained upon request. 
                                                                  
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Annex 2 
  Arrangement of approval mark 
 
 
a = 12 mm (min.) 
 
 The above approval mark af fixed to a pneumatic 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 requirem ents 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. 
  
                                                              
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Annex 3 
  Arrangement of tyre markings 
 
 
 
 Minimum heights of markings 
(mm) 
Tyres of nominal rim diameter  508 mm 
(Code 20) or of nom inal section width 
 235 mm (Code 9) Tyres of nominal rim diameter  508 mm 
(Code 20) or of nom inal section width 
 235 mm (Code 9) 
B 6 9 
C 4 
D 6 
 
1. These markings, given as an example, define a pneumatic 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 categ ory 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; 
c                               ET; ML; MPT; POR 
                                                              
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 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 3.1.3. 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 2.17. 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 2.17. 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-cap acity indices and speed-category-
symbol appearing on the tyre sidewall.  
                                                              
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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 
99 250 
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  
                                                              
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Load-capacity index Corresponding maximum mass to be carried 
(kg) 
100 
101 
102 103 
104 
105 106 
107 
108 109 
110 
111 
112 113 
114 
115 116 
117 
118 119 800 
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 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  
                                                              
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Load-capacity index Corresponding maximum mass to be carried 
(kg) 
145 
146 
147 
148 149 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 8 000 
8 250 8 500 
8 750 
9 000 9 250 
9 500 
9 750 
10 000 
10 300  
                                                              
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Load-capacity index Corresponding maximum mass to be carried 
(kg) 
190 
191 
192 
193 194 
195 
196 197 
198 
199 
200 
 10 600 
10 900 
11 200 
11 500 11 800 
12 150 
12 500 12 850 
13 200 
13 600 
14 000  
                                                              
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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(*) 
 4.50R8 (*)  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 
  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 
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 
 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 
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 6.00 381 840 840 249 249  
                                                              
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27 มอก. 2719–2558 
Tyre-size 
designation (+) Measuring 
rim width 
code Nominal rim 
diameter 
d (mm)  Outer diameter 
 D (mm)  Section width 
 S (mm) 
 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 
  6.50 
 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 10.00 406 
508 
381 
508 559 
406 
508 559 
610 
508 559 
610 
508 508 
610 
508 
 
508 
508 508 
610 
508 508  912 
1018 
 918 
1052 1102 
 980 
1082 1132 
1182 
1122 1174 
1226 
1176 1238 
1340 
1370 
 
1008 
1048 1090 
1192 
1124 1158  900 
1012 
 918 
1050 1102 
 952 
1080 1130 
1180 
1120 1174 
1220 
1170 1238 
1340 
1370 
 
- 
- - 
- 
- - 246 
258 
275 
275 275 
279 
286 286 
286 
313 313 
313 
336 370 
370 
446 
 
305 
326 
350 
350 
370 384 252 
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 ma y be supplemented with the letter 'C' (e.g. 6.00-16C).  
                                                              
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Annex 5 
 
28 มอก. 2719–2558 
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 supplem ented with the letter 'C' (e.g. 7 R 17.5C).  
                                                              
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Annex 5 
 
29 มอก. 2719–2558 
Table C 
Tyres for light commercial vehicles - Radial and diagon al 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). 
  
                                                              
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Annex 5 
 
30 มอก. 2719–2558 
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 
 18x7 
 18x7-8 
 21x8-9  21x4 
 22x4 1/2 
 23x5  23x9-10 
 25x6 
 27x10-12  28x9-15  3.25 
 4.33 
 4.33 
 4.33 
 6.00  2.32 
 3.11 
 3.75  6.50 
 3.75 
 8.00  7.00 203 
203 
203 
203 
229 330 
330 
330 254 
330 
305 381 385 
425 
462 
462 
535 565 
595 
635 595 
680 
690 707 122 
152 
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 th e letter 'R' in place of the hyphen '-' (e.g. 15x4 1/2 R 8).  
                                                              
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Annex 5 
 
31 มอก. 2719–2558 
  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 vari ous 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).  
                                                              
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Annex 5 
 
32 มอก. 2719–2558 
Table B 
Tyres for light commercial vehi cles (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 6 330 597 604  191 
27x8.50-14LT 7 356 674 680  218 
28x8.50-15LT 7 381 699 705  218 
29x9.50-15LT 7.5 381 724 731  240 
30x9.50-15LT 7.5 381 750 756  240 
31x10.50-15LT 8.5 381 775 781  268 
31x11.50-15LT 9 381 775 781  290 
31x13.50-15LT 11 381 775 781  345 
31x15.50-15LT 12 381 775 781  390 
32x11.50-15LT 9 381 801 807  290 
33x12.50-15LT 10 381 826 832  318 
35x12.50-15LT 10 381 877 883  318 
37x12.50-15LT 10 381 928 934  318 
37x14.50-15LT 12 381 928 934  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 
37x12.50-16.5LT 9.75 419 928 939  315 
37x14.50-16.5LT 11.25 419 928 939 365 
33x9.50 R15LT 7.50 381 826 832 240 
35x12.50 R16.5LT 10.00 419 877 883 318 
37x12.50 R17LT 10.00 432 928 934 318 
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.  
                                                              
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Annex 5 
 
33 มอก. 2719–2558 
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.  
                                                              
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34 มอก. 2719–2558 
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.  
                                                              
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Annex 5 
 
35 มอก. 2719–2558 
Table E 
Code designated tyres moun ted 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 calcu lation of Dmax : 1.05.  
 Category of use:  Normal Service tyre s:  (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.  
                                                              
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Annex 6 
 
36 มอก. 2719–2558 
Annex 6 
  Method of measuring pneumatic tyres 
1. The tyre is mounted on the measur ing 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 calculate d from the maximum circumference. 
  
                                                              
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Annex 7 
37 มอก. 2719–2558 
Annex 7 
  Procedure for load/s peed 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 th at specified in pa ragraph 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 l east 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 accorda nce 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 throug hout 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.  
                                                              
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Annex 7 
 
38 มอก. 2719–2558 
3.2. Load placed on the wheel as a percen tage 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 correspo nding 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.  
                                                              
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Annex 7 – Appendix 1 
39 มอก. 2719–2558 
Annex 7 - Appendix 1 
  Endurance-test programme 
 
Load index Tyre speed
category  Test-drum speed Load placed on the wheel as a 
percentage of the load 
corresponding to the load index 
Radial-ply
min-1 Diagonal 
(bias-ply)
min-1 7 h. 16 h. 24 h. 
122 or more F 
G 
J 
K 
L 
M 100 
125 
150 175 
200 
225 100 
100 
125 150 
- 
-  
 
 
 
66 %  
 
 
 
84 %  
  
101 % 
121 or less F 
G 
J 
K 100 
125 150 
175 100 
125 150 
175    
 L 
 
M 
N 
P 200 
 
250 
275 
300 175 
 
200 
- 
-    70 %  
    4 h.  
75 % 
75 % 
75 %    88 %   
     6 h.  
97 % 
97 % 
97 % 106 % 
 
114 % 
114 % 
114 % 
Notes: 
(1)  "Special-use" tyres (see paragr aph 2.1.3. of the 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 categories 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. 
 
  
                                                              
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Annex 7 – Appendix 2 
40 มอก. 2719–2558 
Annex 7 - Appendix 2 
  Relation between the pre ssure 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 
... 
 
 
  
                                                              
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Annex 8 
41 มอก. 2719–2558 
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 +19 +19 +19 +29 +29 +29 +29 
40   +15 +15 +15 +15 +15 +15 +25 +25 +25 +25 
45   +13 +13 +13 +13 +13 +13 +22 +22 +22 +22 
50   +12 +12 +12 +12 +12 +12 +20 +20 +20 +20 
55   +11 +11 +11 +11 +11 + 11 +17.5 +17.5 +17.5 +17.5 
60   +10 +10 +10 +10 +10 + 10 +15.0 +15.0 +15.0 +15.0 
65    +7.5 +8.5 +8.5 +8.5 +8.5 +8.5 +13.5 +13.5 +13.5 +13.5 
70    +5.0 +7.0 +7.0 +7.0 +7.0 +7.0 +12.5 +12.5 +12.5 +12.5 
75    +2.5 +5.5 +5.5 +5.5 +5.5 +5.5 +11.0 +11.0 +11.0 +11.0 
80 0 +4.0 +4.0 +4.0 +4.0 +4.0 +10.0 +10.0 +10.0 +10.0 
85 -3 +2.0 +3.0 +3.0 +3.0 +3.0 +8.5 +8.5 +8.5 +8.5 
90 -6 0 +2.0 +2.0 +2.0 +2.0 +7.5 +7.5 +7.5 +7.5 
95 -10 -2.5 +1.0 +1.0 +1.0 +1.0 +6.5 +6.5 +6.5 +6.5 
100 -15 -5 0 0 0 0 +5.0 +5.0 +5.0 +5.0 
105  -8 -2 0 0 0 +3.75 +3.75 +3.75 +3.75 
110  -13 -4 0 0 0 +2.5 +2.5 +2.5 +2.5 
115   -7 -3 0 0 +1.25 +1.25 +1.25 +1.25 
120   -12 -7 0 0 0 0 0 0 
125      0 -2.5 0 0 0 
130      0 -5.0 0 0 0 
135       -7.5 -2.5 0 0 
140       -10 -5 0 0  
                                                              
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Annex 8 
 
42 มอก. 2719–2558 
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 
145        -7.5 -2.5 0 
150        -10.0 -5.0 0 
155         -7.5 -2.5 
160         -10.0 -5.0 
  1   The load capacity indices refer to a single operation. 
  2   Load variations are not allowed for speeds above 160 km/h.  For speed category symbols "Q" and 
above the speed category corresponding to the sp eed category symbol (see paragraph 2.28.2.) 
specifies the maximum speed permitted for the tyre.  
                                                              
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Annex 9 
43 มอก. 2719–2558 
Annex 9 
  Communication    Upgrade of service description  for the purposes of retreading 
in accordance with Regulation No. 109 
(Maximum format: A4 [210 x 297mm]) 
 
Issued by (Name and address of tyre manufacturer): ...............................................................  
............................................................................................................................... ....................  
Declaration: The tyre corresponding to the following details  has been approved to operate at a higher 
service description than that of the tyre originally approved.  It is therefore permitted, subject to any limitations given in paragraph 4.1.1. below , for a tyre bearing the original 
service description and approval number, to be retreaded to the upgraded service description. 
It is also agreed that this information may be released by an appr oval authority to any 
retreading production unit that  is approved in accordance with Regulation No. 109. 
1. Manufacturer’s name or trade mark on the tyre: ....................... ...................................    ............................................................................................................................. .........  
2. Manufacturer’s tyre type, model or  design designation: ................ ..............................  
  ............................................................................................................................. .........  
3. Tyre-size designation: ......... ....................................... ..................................................  
  ............................................................................................................................. .........  
3.1. Category of use (Normal, Snow or Special): ................................................................    ............................................................................................................................. .........  
4. Service description 4.1. Original tyre: ........................................................................................................... ......  
 Approval No. pursuant  to Regulation No. 54. .......................... ................................... . 
  ............................................................................................................................. .........  
 Granted by: ........................................................... ...................................................... ..  
  ............................................................................................................................. .........  
4.1.1. Where applicable, the production plant in which tyres suitabl e for upgrading were 
produced, the production periods concerned, and the means of identifying either or both of these issues: ......................................................................................................  
  ............................................................................................................................. .........  
  ............................................................................................................................. .........   
                                                              
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Annex 9 
 
44 มอก. 2719–2558 
4.2. Upgraded tyre:  .......................................................................................................... ...  
 Approval No. pursuant to Re gulation No. 54. ............. .................................................  
 Granted by: ........................................................... ...................................................... ..  
5. Authorized by (tyre ma nufacturer’s representative): 
5.1. Name (Block capitals):  ............................................................................................... . 5.2. Department:  ............................................................................................................. ....  
5.3. Signature:  .............................................................................................................. .......  
      
                                                              
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