ChinaAutoRegs｜GB 9744-2024英文版翻译《载重汽车轮胎》 Truck Tyres

1 SCOPE

This document specifies the requirements for truck tyres, pass criteria, marking and implementation requirements, and describes the relevant test methods.

This document is applicable to new pneumatic tyres of trucks.

2 NORMATIVE REFERENCES

The following normative documents contain provisions which, through normative reference in this text, constitute essential provision of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment) applies.

GB/T 521 Method of measuring tyre peripheral dimensions

GB/T 2977 Size designation, dimensions, inflation pressure and load capacity for truck tyres

GB/T 4501 Laboratory test methods for truck and bus tyres capabilities

GB/T 6326 Tyres terms and definitions

GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

GB/T 29040 Test methods of rolling resistance for motor vehicle tyres – Single point test and correlation of measurement results

GB/T 29042 Thresholds and grading of rolling resistance for motor vehicle tyres

GB/T 35163 Method for measuring relative wet grip performance of truck and bus tyres

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

3 TERMS AND DEFINITIONS

For the purpose of this document, the terms and definitions established in GB/T 6326 and GB/T 39971 apply.

4 REQUIREMENTS

4.1 Main Parameters of Tyres

The tyre specifications, load index, ply rating, measuring rim, load capacity, inflation pressure, minimum dual spacing and permitted rim shall be as specified in GB/T 2977 or relevant industry technical document.

Note: Compliance with relevant industry technical document is applicable to the truck tyres of which any parameter varies from that specified in GB/T 2977 and is not covered by GB/T 2977.

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