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GB 9743-2007 (GB9743-2007)

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GB 9743-2007: PDF in English

GB 9743-2007
GB
ICS 83.160.10
G 41
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Replacing GB 9743 -1997
Passenger car tyres
ISSUED ON. NOVEMBER 1, 2007
IMPLEMENTED ON. APRIL 1, 2008
Jointly issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic
of China.
Table of Contents 
1  SCOPE ... 4 
2  NORMATIVE REFERENCE ... 4 
3  TERMS AND DEFINITIONS ... 4 
4  REQUIREMENTS ... 5 
5  TESTS METHODS ... 6 
6  MARKING ... 7 
ANNEX A ... 8 
ANNEX B ... 9 
Foreword
The 4.1~4.6, 4.7.1 and Chapter 6 of this standard are mandatory. The rest are voluntary.
This standard replaces GB 9743-1997 Passenger car tyres.
The main differences between GB9743-1997 and this standard are as follows.
- This standard provides the list of specifications and dimensions in the form of referenced
documents instead of listing them directly (4.1 of edition 1997; 4.1 of this edition);
- Breaking energy indicator of a passenger car bias tyre under minimum strength is
integrated into a sheet (4.3.1 of edition 1997; 4.5.1 of this edition);
- Breaking energy of each test point shall be evaluated, instead of evaluating the arithmetic
mean value of breaking energy at five points (4.3.1 of edition 1997; 4.5.1 of this edition);
- Performance requirements for T tyres are added (Tables 1 and 2 of this edition);
- Inspection rules are deleted (Chapter 6 of edition 1997);
- List of maximum tyre speeds is deleted (Table 13 of edition 1997);
- Requirements for tyre markings are revised (Chapter 7 of edition 1997; Chapter 6 of this
edition);
The Annexes A and B of this standard are normative.
This standard was proposed by the China Petroleum and Chemical Industry Association.
This standard shall be under the jurisdiction of the National Technical Committee for
Standardisation of Tyres and Rims.
This standard is entrusted to National Technical Committee for Standardisation of Tyres and
Trims for interpretation.
Drafting organisations of this standard. Beijing Research & Design Institute of Rubber Industry,
and Triangle Tyres Co., Ltd.
The main drafters of this standard. Wang Kexian, Shan Guoling, Xu Jiangli, and Wu Jiangtao.
The historical versions replaced by this standard are.
- GB 1191-1965, GB 1191-1974, GB 1191-1982, GB 1191-1989, GB 9743-1988 and GB
9743-1997.
PASSENGER CAR TYRES
1  SCOPE 
This Standard specifies the terms and definitions, requirements, test methods and marking
of passenger car tyres.
This Standard is applicable to new pneumatic passenger car tyres.
2  NORMATIVE REFERENCE 
The following standards contain provisions which, through reference in this text, constitute
provisions of this standard. For dated references, subsequent amendments (corrigenda
excluded) to, or revisions of, any of these publications do not apply. However, parties to
agreements based on this standard are encouraged to investigate the possibility of applying
the most recent editions of the standards indicated below. For undated references, the
latest edition of the normative document referred to applies.
GB/T 521 Method of measuring tyre peripheral dimensions
GB/T 2978 Size designation, dimensions, inflation pressure and load capacity for
passenger car tyres
GB/T 4502 Endurance test for passenger car tyres (Drum method) (GB/T 4502-1998, eqv
ISO 10191.1993)
GB/T 4503 Strength test method for passenger car tyres (GB/T 4503-2006, ISO
10191.1995, MOD)
GB/T 4504 Bead unseating resistance test for tubeless passenger car tyres (GB/T 4504-
1998, eqv ISO 10191.1993)
GB/T 6326 Tyres- Terms and definitions (GB/T 6326-2005, ISO 4223-1.2003 NEQ)
GB/T 7034 High speed test for passenger car tyres (Drum method) (GB/T 7034-1998, eqv
ISO 10191.1995)
GB 7036.1 Pneumatic tyre tubes Part 1. Automobile tyre tubes (GB 7036.1 .1997, eqv
JIS D4231.1987)
HG/T 2177 Appearance quality of tyres
3  TERMS AND DEFINITIONS 
The terms and definitions specified in GB/T 6326 shall be applicable to this standard.
6  MARKING 
6.1 Each cover tyre shall have the marks of items a)~ h) below, at its outer side. In
which, items a)~f) are casting marks, item g) is a permanent mark, and item h)
is an indelible mark.
a) Specification;
b) Trademark, factory name or place name;
c) Load index (maximum load capacity) or level, and pneumatic pressure;
d) Speed symbol;
e) Name and layer-number of framework materials used for tyre crown at
tyre side of a radial tyre; name of framework materials used for a bias tyre;
f) Position marking of signs of wear on tyre tread;
g) Production serial number;
h) Marking of exit-factory inspection.
6.2 Radial tyre shall be casted with the symbol "RADIAL" (or " "). Tubeless
tyres shall be casted with the symbol "TUBELESS" (or " ").
6.3 The tyres, of which the tread patterns indicate the running direction, shall be
casted with the symbol of running direction.
6.4 Adhesion tyres shall be casted with the symbol of ice patterns;
6.5 Enhanced tyre shall be casted with symbol of enhancement.
6.6 Temporary spare tyre shall be casted with symbol for temporary use.
Table B.1 (Cont'd)
LI TLCC LI TLCC LI TLCC LI TLCC LI TLCC LI TLCC LI TLCC
175 6900 190 10600 205 16500 220 25000 235 38750 250 60000 265 92500
176 7100 191 10900 206 17000 221 25750 236 40000 251 61500 266 95000
177 7300 192 11200 207 17500 222 26500 237 41250 252 63000 267 97500
178 7500 193 11500 208 18000 223 27250 238 42500 253 65000 268 100000
179 7750 194 11800 209 18500 224 28000 239 43750 254 67000 269 103000
180 8000 195 12150 210 19000 225 29000 240 45000 255 69000 270 106000
181 8250 196 12500 211 19500 226 30000 241 46250 256 71000 271 109000
182 8500 197 12850 212 20000 227 30750 242 47500 257 73000 272 112000
183 8750 198 13200 213 20600 228 31500 243 48750 258 75000 273 115000
184 9000 199 13600 214 21200 229 32500 244 50000 259 77500 274 118000
185 9250 200 14000 215 21800 230 33500 245 51500 260 80000 275 121000
186 9500 201 14500 216 22400 231 34500 246 53000 261 82500 276 125000
187 9750 202 15000 217 23000 232 35500 247 54500 262 85000 277 128500
188 10000 203 15500 218 23600 233 36500 248 56000 263 87500 278 132000
189 10300 204 16000 219 24300 234 37500 249 58000 264 90000 279 136000
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.