GB/T 39971-2021 Active National standards

GB/T 39971-2021 Thresholds and grading of relative wet grip index for motor vehicle tyres

Publish Date: 2021-05-21 Implement Date: 2021-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 39971-2021

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Tire

ICS Name: Road vehicle tires

Publish Date: 2021-05-21

Implement Date: 2021-12-01

Pages: 5 pages

Scope

This standard specifies the limit values and grade requirements for the relative grip index of car tires on wet roads, as well as the testing methods.
This standard applies to new passenger car radial tires, new miniature and light-duty vehicle radial tires, and new heavy-duty vehicle radial tires. However, it does not include: tires with a nominal rim diameter ≤ 10 inches and tires with a nominal rim diameter ≥ 25 inches, T-type spare tires for temporary use only, road-type trailer special-purpose ST metric tires, light-duty vehicle high-passability radial tires, heavy-duty vehicle tires with a speed capacity of 80 km/h (excluding) or less, racing tires, studded tires, and specialized off-road tires.