This standard specifies test methods for verifying the capabilities of tyres for passenger cars, including terms and definitions for test, test equipment and precision, test conditions, test procedure, judgment criterion and test report, etc. Of the test methods presented, only some may be required depending on the type of tyre to be tested (with inner tube or tubeless, diagonal tyre or radial tyre, etc.).
This standard includes:
(1) Bead unseating resistance test - assessing the resistance of the tyre to bead unseating.
(2) Strength test - assessing the capability of the tyre structure with respect to breaking energy of tread cap.
(3) High speed test - assessing the capability of the tyre according to its speed symbol.
(4) Endurance test - assessing the resistance of the tyre with respect to service at specified load and speed.
(5) Low pressure test - assessing the reliability of radial tyre under low voltage state with respect to service at specified load, speed and low pressure.
The test methods presented in this standard are not intended for gradation of tyre capabilities or quality levels.
This standard is applicable to new pneumatic tyre of passenger cars.
2 Normative References
The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. For dated references, subsequent amendments to (excluding the corrections to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part 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 document referred to applies.
GB/T 2978 Size designation, Dimensions, Inflation Pressure and Load Capacity for Passenger Car Tyres
GB/T 6326 Tyre Terms and Definitions (GB/T 6326-2005, ISO 4223-1:2002, Definitions of Some Terms used in Tyre Industry - Part 1: Pneumatic Tyres, NEQ)
GB 9743 Passenger Car Tyres
