اﻟﻌﺮﺑﻴﺔ  اﻟﺨﻠﻴﺞ  ﻟﺪول اﻟﺘﻌﺎون  ﻣﺠﻠﺲ  ﻟﺪول اﻟﺘﻘﻴﻴﺲ  هﻴﺌﺔ  
GCC STANDARDIZATION ORGANIZATION (GSO) 
 
    
ﻣﺸﺮوع:  ﻧﻬﺎﺋﻲ
  
 
  
GSO/02/FDS /647:2009 
 
 
 
واﻟﺸﺎﺣﻨﺎت  اﻷﻏﺮاض  ﻣﺘﻌﺪدة  اﻟﺴﻴﺎرات  إﻃﺎرات  
واﻟﻤﻘﻄﻮرات  واﻟﺤﺎﻓﻼت  
اﻟﺜﺎﻟﺚ اﻟﺠﺰء:  اﻟﻌﺎﻣﺔ  اﻟﻤﺘﻄﻠﺒﺎت   
MULTI-PURPOSE VEHICLES, TRUCKS, 
BUSES AND TRAILERS TYRES 
PART 3: GENERAL REQUIREMENTS 
 
 
   
 
  
 
إﻋﺪاد 
 ﻟﻘﻄﺎع اﻟﺨﻠﻴﺠﻴﺔ  اﻟﻔﺮﻋﻴﺔ  اﻟﻔﻨﻴﺔ واﻹﻃﺎراتاﻟﻠﺠﻨﺔ  اﻟﻤﺮآﺒﺎت  ﻣﻮاﺻﻔﺎت  
 
 
                           ﻓﺈﻧﻬ ﻟ ﺑﺸ  واﻟﻤﻼﺣﻈ  اﻟ ﻹﺑ ﺗﻮزﻳﻌﻬ  ﺗ ﺧﻠﻴﺠﻴ  ﻗﻴﺎﺳ  ﻟﻤﻮاﺻ  ﻣﺸ  اﻟﻮﺛﻴﻘ  هﺬﻩ
   واﻟﺘﺒ  ﻟﻠﺘﻐﻴﻴﺮ  ﻋﺮﺿﺔ                        ﻣﺠﻠ  ﻣ اﻋﺘﻤﺎده  ﺑﻌ إﻻ ﺧﻠﻴﺠﻴ  ﻗﻴﺎﺳ  آﻤﻮاﺻ  إﻟﻴﻬ اﻟﺮﺟ  ﻳﺠ وﻻ ﻞ،
اﻟﻬﻴﺌﺔ إدارة .   
 
ﺗﻘﺪﻳﻢ 
               اﻟﻮﻃﻨﻴ  اﻷﺟﻬ  ﻋﻀ  ﻓ ﺗﻀ إﻗﻠﻴﻤﻴ  هﻴﺌ اﻟﻌﺮﺑﻴﺔ  اﻟﺨﻠﻴﺞ  ﻟﺪول اﻟﺘﻌﺎون  ﻣﺠﻠﺲ  ﻟﺪول اﻟﺘﻘﻴﻴﺲ  هﻴﺌﺔ
  إﻋ اﻟﻬﻴﺌ ﻣﻬ وﻣ ، اﻟﻌﺮﺑﻴ  اﻟﺨﻠ  دول ﻓ واﻟﻤﻘ  ﻟﻠﻤﻮاﺻ  اﻟﺨﻠﻴﺠﻴ  اﻟﻘﻴﺎﺳ  اﻟﻤﻮاﺻ
 ﻣﺘﺨﺼﺼﺔ  ﻓﻨﻴﺔ ﻟﺠﺎن ﺑﻮاﺳﻄﺔ .  
 
                   رﻗ اﻟﻔﻨﻴ اﻟﻠﺠﻨﺔ ﻋﻤﻞ ﺑﺮﻧﺎﻣﺞ  ﺿﻤﻦ اﻟﻌﺮﺑﻴﺔ  اﻟﺨﻠﻴﺞ  ﻟﺪول اﻟﺘﻌﺎون  ﻣﺠﻠﺲ  ﻟﺪول اﻟﺘﻘﻴﻴﺲ  هﻴﺌﺔ ﻗﺎﻣﺖ ٢وﻗﺪ -
١       " واﻹﻃ  اﻟﻤﺮآﺒﺎت  ﻣﻮاﺻﻔﺎت  ﻟﻘﻄﺎع اﻟﺨﻠﻴﺠﻴﺔ  اﻟﻔﻨﻴﺔ ﻟﻠﺠﻨﺔ     "   اﻟﺨﻠﻴﺠﻴ  اﻟﻘﻴﺎﺳ  اﻟﻤﻮاﺻ  ﺑﺘﺤ
  ٧٤٦رﻗﻢ/ ٦٩٩١      م،       " اﻟﺠ  واﻟﻤﻘﻄ  واﻟﺤ  واﻟﺸﺎﺣﻨﺎت  اﻷﻏﺮاض  ﻣﺘﻌﺪدة  اﻟﺴﻴﺎرات  إﻃﺎرات
اﻟﺜﺎﻟﺚ : اﻟﻌﺎﻣﺔ اﻟﻤﺘﻄﻠﺒﺎت" . اﻟﻤﻮاﺻﻔﺔ  هﺬﻩ ﻣﺸﺮوع  ﺑﺈﻋﺪاد  ﻋﻤﺎن ﺳﻠﻄﻨﺔ  وﻗﺎﻣﺖ .   
 
   اﻟﻤﻮاﺻﻔﺔ  هﺬﻩ اﻋﺘﻤﺪت  وﻗﺪ     ﺧﻠﻴﺠﻴ  ﻓﻨﻴ ﻻﺋﺤ آ       رﻗ اﻟﻬﻴﺌ إدارة ﻣﺠﻠ  اﺟﺘﻤ  ﻓ  )          (  اﻟ ،
ﺑ ﻋﻘ       ﺘ     /      /       اﻟﻤﻮاﻓ  ، ه/    /      م   . رﻗ اﻟﻤﻮاﺻ  ﺗُﻠﻐِ أن ﻋﻠ )    /    (  وﺗَﺤ
ﻣﺤﻠﻬﺎ .
Foreword 
 
GCC Standardization Organization (GSO ) is a regional Organization which 
consists of the National Standards Bodi es of GCC member States. One of GSO 
main functions is to issue Gulf St andards /Technical regulations through 
specialized technical committees (TCs).  GSO through the technical program of  committee TC No. 2-1 "The Gulf 
technical Subcommittee for vehicles a nd tyres standards" has updated the GSO 
Standard No. : 647/1996 "multi-purpose vehicl es, trucks, Buses and trailers tyres 
Part 3: general requirements". The Dr aft Standard has been prepared by 
Sultanate of Oman.   This standard has been approved as a Gulf  Technical Regulation by GSO Board 
of Directors in its meeting No.(       ),held on      /    /            H ,     /     /              
G. The approved standard will replace and supe rsede the GSO standard No. (       
/      ).    
 
 GSO STANDARD GSO  /  
 
 1MULTI-PURPOSE VEHICLES, TRUCKS, 
BUSES AND TRAILERS TYRES 
PART 3: GENERAL REQUIREMENTS  
 
 
1. SCOPE AND FIELD OF APPLICATION 
 This standard is concerned with ge neral requirements for new tyres for multi-
purpose vehicles, Light Trucks, Heavy Trucks, Buses and trailers. This standard is not applicable for tyre types identified by speed category less than 80km/h. 
 
2. COMPLEMENTARY REFERENCES 
2.1 GS 645/2009 "Multi-purpose Vehicles, Trucks, Buses and Trailers Tyres – Part 1 : 
Nomenclature, Designation, Marking, Dimens ions, Load Capacity and Inflation 
Pressure ". 
2.2 GS 646/2009 "Multi-purpose Vehicles, Trucks, Buses and Trailers Tyres – Part 2 : 
Method of Test” 
 
3. REQUIREMENTS 
 The following shall be met in the tyre s of multi-purpose vehicles, trucks, buses 
and trailers. 
3.1 Appearance 3.1.1 The tyre shall exhibit no visual evidence of tread, sidewall, ply, cord, inner liner, 
or bead separation, chunking, broken cords, cracking or open splices. 
3.1.2 The tread shall be even and no exposed tyre ply cord shall be visible. 3.2 Strength  The breaking energy of tyres shall not be less than the values specified in    
Table1.when tested in accordance with the GSO Standard mentioned in item 2.2. 
3.3 Endurance 3.3.1 No evidence of tread, side wall, ply, co rd, inner liner, or bead separation, tread 
chunking, broken cord, cracking or open spli ces when the tyre subjected to the 
endurance test. GSO STANDARD GSO  /  
 
 23.3.2 The outer diameter of the tyre, measur ed six hours after the endurance test, shall 
not differ by more than 3.5 percent from th e outer diameter as measured before 
the test. 
3.3.3 The tyre pressure at the end of the test  shall be not less than the initial pressure 
specified. 
3.4 Treadwear indicators 3.4.1 Each tyre shall have at least six traver se rows of treadwear indicators, equally 
spaced around the circumference of the tyre  and situated in the principal grooves 
of the tread. 
3.4.2 Tyres designed for mounting on rims of nom inal rim diameter code 12 or less, not 
less than four traverse rows of treadwear indicators is acceptable. 
3.5 Speed Symbol 3.5.1 The speed symbol shall be marked on the tyre, and it shall be as indicated in GSO 
standard mentioned in item 2.1. 
3.5.2 The tyres fitted on MPV shall be with speed symbol ‘S’ or higher. 3.5.3 The tyres fitted on buses shall be with speed symbol ‘M’ or higher 3.5.4  The tyres fitted on Light Truck shall be with speed symbol ‘L’ or higher 3.5.5 The tyres fitted on the heavy truck shall be with speed symbol ‘k’ or higher   
 
4. MARKING 
 The marking of tyres shall be in accord ance with the GSO standard mentioned in 
item 2.1  
 
5. TESTING 5.1 Sampling 
 Two tyres with identical characteristics, e.g. size designation and service 
description or maximum load rating and speed capability, shall comprise a test sample. 
a) One tyre shall be used for the measurement of strength. b) A second tyre shall be used for the endurance test. GSO STANDARD GSO  /  
 
 3 Each test sample shall conform to the requirements specified in 5.3.1 and  5.3.2. 
5.2 Methods of test  
 The tests shall be carried out in accord ance with GSO Standard mentioned in item 
2.2. 
5.3      Tests 
 The following tests shall be carried  out  on samples taken in accordance with item 
5. 1. 
5.3.1 Visual inspection. 5.3.2 Dimensions. 5.3.3 Strength 5.3.4     Endurance.  
6.    CRITERIA OF TECHNICAL CONFORMITY 
6.1 Two months at least before dispatching th e consignment of any type of tyres, the 
manufacturer shall send to the Standard ization Organization for GCC (GSO) a 
conformity certificate – in his formal pape r – in English and/or Arabic languages, 
certifying that this type of tyres meets the requirements of GSO technical regulation for tyres.  The certificate shall include the following (Appendix "A" 
shows an example of this certificate): 
6.1.1 Designation of dimensions, construction, nominal tyre rim diameter and speed 
symbol 
6.1.2    Trade name, trade mark, brand name or manufacturer’s name.. 6.1.3 Country of production 6.1.4 Regroovable (if designed) 6.1.5 Tube type or tubeless  6.1.6 The production period which shall not be more than one full year. 6.1.7 A guarantee valid for at least one year. 6.2        The results of tests carried out shall be supplied to GSO. 
 
6.3 The tyres shall be exported within ei ghteen (18) months from the date of 
production indicated on the tyre. GSO STANDARD GSO  /  
 
 46.4 The approved conformity certificate shall be  valid only for one year from the date 
of approval. 
6.5 In case of Standardization Organiza tion for GCC (GSO) acceptance of the 
certificate mentioned in item 7.1, the type of tyres shall be considered acceptable. 
6.6 In case the certificate is  not accepted (because information is incomplete or 
subject to question), the information may be completed.  If not completed or if 
necessary, substantiated tests, as require d by the standard shall be carried out on 
tyre samples. 
 
 
 GSO STANDARD GSO  /  
 
 5 
Table (1) 
Minimum Breaking Energy 
 
  
Breaking energy min.J 
Other tyres 
Load 
range PR Rim diameter  
code ≤ 12 Rim diameter 
code 13 and 14
Tube type 
marked "LT" Other tyres 
marked "LT" 
Tubeless with 
rim diameter 
code 13 to 17.5 
inclusive Tube 
type Tubeless 
A 2 68 - 226 - - 
B 4 136 192 294 - - 
C 6 203 271 362 768 576 
D 8 271 384 514 893 734 
E 10 339 - 576 1 412 972 
F 12 407 - 644 1 785 1412 
G 14 - - 712 2 282 1 695 
H 16 - - 768 2 599 2 090 
J 18 - - - 2 825 2 203 
L 20 - - - 3 051 - 
M 22 - - - 3 220 - 
N 24 - - - 3 390 - 
Note: Rayon cord tyres to be 60% of the values shown. GSO STANDARD GSO  /  
 
 1 
APPENDIX  (A) 
 
MODEL OF A CERTIFICATE OF CONFORMITY 
FOR MULTI-PURPOSE VEHICLES, TRUCKS 
BUSES AND TRAILERS TYRES 
 
 
 Name of Manufacturer:                                                          Ref .No : Country of Production:                                                                   Date      :   To:  GCC Standardization Organization (GSO)  We hereby certify that the tyres manufactured by as:  Type.( Tyre Designation/Size)   Tube/Tubeless :                          Bias/Radial :                      Speed symbol:     Produced in the week  No …….Year…….. till the end of week No ……..of the year………….will satisfy the GSO Technical Regulation Nos. .................... The production period mentioned in the certificate shall not be more than one full year  
Note: All tyres are guaranteed for 12 months against manufacturing defects under normal 
operating conditions and with recommended inflation pressure. 
  
Stamp, name and signature of  
responsible person for the Concerned department of  manufacturer