GB/T 6326-2014 in English

《GB/T 6326-2014轮胎术语及其定义》由TC19（全国轮胎轮辋标准化技术委员会）归口，TC19SC1（全国轮胎轮辋标准化技术委员会汽车工农业机械轮胎轮辋分会）执行，主管部门为中国石油和化学工业联合会。
本标准规定了轮胎工业用一般术语、轮胎分类、轮胎部位部件、轮胎胎面花纹、轮辋、轮胎尺寸、轮胎
性能及其测试、轮胎标志、轮胎外观缺陷、轮胎使用、轮胎翻新与修补的术语及其定义。
本标准适用于轿车轮胎、轻型载重汽车轮胎、载重汽车轮胎、工程机械轮胎、农业轮胎、工业车辆轮
胎、摩托车轮胎、力车轮胎、航空轮胎。

1 Scope

This standard specifies general terms of tyre for industrial purpose, and terms and definitions related to category of tyre, components of tyre, tread pattern, rim, tyre dimension, tyre performance and its test, tyre marking, appearance defects of tyre, type service, as well as tyre retread and repair.

It is applicable to passenger car tyre, light truck tyre, truck tyre, earth-mover tyre, agricultural tyre, industrial tyre, motorcycle tyre, cycle tyre and aircraft tyre.

2 General terms

2.1

tyre

a ring-shaped elastic product that is mounted on a vehicle wheel or machine, for driving automobile, engineering machinery, agricultural machinery, industrial vehicle, motorcycle, cycle vehicle and other vehicles and helping the aircraft take off /land, etc.

2.2

new tyre

tyre that has been neither used nor subjected to a retreading operation

2.3

grown tyre

tyre that has undergone expansion due to use in service

2.4

pneumatic tyre

tyre that needs the compressed gas or liquid in the inner cavity and is capable of keeping the pressure, including tube-tyre and tubeless tyre

2.5

solid tyre

tyre that has the materials of different performances filled in the carcass and is not equipped with inner cavity

2.6

tubeless tyre

pneumatic tyre that is not assembled with the inner tube

2.7

tube tyre

pneumatic tyre that needs the inner tube within the inner cavity of tyre cover, typically including cover, inner tube and flap

2.8

cover

outer shell of a tyre, capable of bearing various acting forces

2.9

inner tube

ring-shaped elastic tube that is used to keep the inner pressure and accompanied with inflating valve

2.10

flap

endless belt that protects the inner tube rim part against the wear by the rim

2.11

rim

component on the wheel for mounting and supporting the tyre

3 Category of tyre

3.1 Based on use

3.1.1

normal tyre

tyre intended for normal use

3.1.2

special tyre

tyre intended for special use, e.g. mixed use, both on and off road or for other strict speed limit
3.1.3

mud and snow tyre

tyre whose tread pattern and design are different from normal tyre and capable of achieving in snowy or muddy areas with a driving performance better than that of a normal tyre

3.1.4

temporary-use spare tyre

tyre different from the one intended to be fitted to a vehicle for normal driving conditions and intended only for temporary use under restricted driving conditions

3.1.5

T-type temporary-use spare tyre

temporary-use spare tyre designed for use at an inflation pressure higher than those established for standard and reinforced tyres

3.1.6

snow tyre

tyre whose tread pattern, rubber material of tread and structure are primarily designed to achieve in snowy and icy conditions with a performance better than that of a normal tyre with regard to its initiation, operation and braking performance

3.1.7

run flat tyre

pneumatic tyre that is designed to enable the vehicle to be driven at normal inflation condition and continue to be driven at certain speed under deflation condition for limited distances

3.1.8

self-supporting run flat tyre

pneumatic tyre that is designed to enable the vehicle to be driven at normal inflation condition and continue to be driven at certain speed under deflation condition for limited distances without the mounting of any other accessory parts

Note: One of the solution examples is the reinforced sidewall.

3.1.9

internal supporter tyre

tyre that has the supporter in the inner cavity of the cover

3.2 Based on structure

3.2.1

structure type

technical characteristics of the tyre carcass, e.g. diagonal (bias-ply), bias-belted and radial

3.2.2

diagonal/bias-ply tyre

Foreword i
1 Scope
2 General terms
3 Category of tyre
4 Components of tyre (see Figure 1 and Figure 2)
5 Thread pattern (see Figure 3)
6 Rim
7 Tyre dimension (see Figure 4)
8 Tyre performance and its test
9 Tyre marking
10 Appearance defects of tyre
11 Tyre service
12 Retread and repair of tyres
Annex A (Informative) Nominal rim diameter
Annex B (Informative) Corresponding relation between speed symbol and speed capability
Annex C (Informative) Corresponding relation between load index and load capability
Index