On August 18 2023, China’s Ministry of Industry and Information Technology (MIIT) issued the draft mandatory national standard of Passenger Car Tyres. The document is open for public comments until September 17 of 2023.

This standard specifies the requirements, test methods, judging principles, marks and implementation requirements of standards for passenger car tires. It applies to new pneumatic tires for passenger cars.

This standard will replace the earlier passenger car tyres standard GB9743—2015. Compared with GB9743—2015, the main technical changes are as follows:

-         Changed the relevant requirements on the main parameters of tires;

-         Deleted the corresponding relationship between speed, air pressure and load;

-         Changed the product range of tire strength performance assessment;

-         Changed the product range of tubeless tire bead-off resistance performance assessment;

-         Added the performance requirements for tire rolling resistance;

-         Added the relative grip performance requirements of tires on wet road surfaces;

-         Delete other appearance quality requirements for tires and pads;

-         Delete the test conditions for the durability performance of snow tires;

-         Added the rounding-off requirements for tire rolling resistance performance test methods and test results;

-         Added rounding-off the requirements for the test methods and test results of the relative grip performance of tires on wet roads;

-         Added the principle of judgment;

-         Delete the name of the manufacturer or place of origin, and the factory inspection mark;

-         Added the requirement that special-purpose tires, tires with electronic tags and self-supporting run-flat tires should have corresponding signs;

-         Added the implementation requirements of the standard.

At present, the international standards and regulations about passenger car tires are mainly DOT/FMSS109, FMSS139, ECE 30, and ECE R117. Among them, ECE R117 stipulates the requirements on tire rolling resistance, wet-skid resistance and passing noise limit.All these standards and regulations were used as reference during the revision, however, considering the actual situation in China, the new standard only adopted the requirements for tire rolling and wet skid resistances, while abandoned the requirements for tire passing noise.

In terms of implementation date, the standard-setting TC suggested a transition period of 12 months, but the implementation of the rolling resistance limit and the wet road grip index would be given another 12 months of transition period.

If you need more information or have any questions on the standard, please contact: contact@bestao-consulting.com