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GB/T 2979-2026: Size designation, dimensions, inflation pressure and load capacity for agricultural tyres
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 2979-2026	English	1259	Add to Cart	8 days [Need to translate]	Size designation, dimensions, inflation pressure and load capacity for agricultural tyres
GB/T 2979-2017	English	759	Add to Cart	6 days [Need to translate]	Size designation, dimensions, inflation pressure and load capacity for agricultural tyres
GB/T 2979-2008	English	RFQ	ASK	5 days [Need to translate]	Size designation, dimensions, inflation pressure and load capacity for agricultural tyres
GB/T 2979-1999	English	RFQ	ASK	6 days [Need to translate]	Series of agricultural tyres
GB/T 2979-1991	English	RFQ	ASK	3 days [Need to translate]	Series of agricutural tyres

GB/T 2979-2026: Size designation, dimensions, inflation pressure and load capacity for agricultural tyres

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ICS 83.160.30 CCSG41 National Standards of the People's Republic of China Replaces GB/T 2979-2017 Agricultural tire specifications, dimensions, air pressure and load Implemented on 2026-09-01 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Table of contents

Preface III 1.Scope 1 2 Normative References 1 3.Terms and Definitions 1 4.Methods of representing tire specifications 1 5.Tire specifications, dimensions, tire pressure, and load 2 6.Tire tread pattern 2 7.Valve stem 2 Appendix A (Informative) Calculation Methods for Maximum Size of Inflatable Tires and Minimum Tire Spacing of Drive Wheels 50 Appendix B (Normative) Classification of Agricultural Tire Tread Patterns 51 Appendix C (Normative) Design Tread Depth for Agricultural Tires 52

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document replaces GB/T 2979-2017 "Specifications, Dimensions, Air Pressure and Load of Agricultural Tires". Compared with GB/T 2979-2017, except for... Aside from structural adjustments and editorial changes, the main technical changes are as follows. ---Some tire specification representations have been added and modified (see Chapter 4, Chapter 4 of the.2017 edition); ---Added instructions for load calculation of dual-tire and triple-tire installations (see 5.5); ---Some specifications have been added (see Tables 1-11 and Table 24); ---Some specifications have been adjusted (see Tables 1-11, Tables 1-13 in the.2017 version); ---The conversion standards for speed and load of some tire types have been changed (see Tables 1, 2, 3, 10, and 11; Table 1 in the.2017 edition). Tables 2, 3, 5, 12, and 13); ---The name of the velocity radius index has been changed, and instructions for its use have been added (see Table 3, Table 3 in the.2017 edition); ---The bias-ply tires for tillage on the drive wheels of agricultural tractors have been removed (see Table 5 in the.2017 edition); ---The radial tires for agricultural tractors used for tillage have been removed (see Table 6 in the.2017 edition); ---Metric bias-ply tires for agricultural machinery have been added (see Table 12); ---Metric radial tires for agricultural machinery have been added (see Table 13); ---Added ultra-high flex metric radial tires for agricultural machinery (see Table 14); ---Added high-flexibility metric radial tires for agricultural machinery (see Table 15); ---Metric bias-ply tires have been added to the drive wheels of agricultural tractors (see Table 18); ---Added bias-ply tires for the construction industry (see Table 19); ---Added metric bias-ply tires for the construction industry (see Table 20); ---Metric radial tires for the construction industry have been added (see Table 21); ---Added ultra-high flex metric radial tires for agricultural tractor drive wheels (see Table 22); ---High-flexibility metric radial tires have been added to the drive wheels of agricultural tractors (see Table 23); ---Some names of agricultural tire tread patterns have been changed and added (see Table B.1, Table A.1 in the.2017 edition); ---Added design standards for tread depth in high-passability agricultural tires (see Table C.6). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed by the China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Technical Committee on Standardization of Tires and Rim (SAC/TC19). This document was drafted by. Zhongce Rubber Group Co., Ltd., Xuzhou Xulun Rubber Co., Ltd., and Guizhou Tyre Co., Ltd. Company, Shandong Linglong Tire Co., Ltd., Beijing Rubber Industry Research and Design Institute Co., Ltd., Double Coin Tire Group Co., Ltd., Sailun Group Joint-stock companies, Prinx Chengshan (Shandong) Tire Co., Ltd., Aeolus Tire Co., Ltd., Sichuan Tire & Rubber (Group) Co., Ltd. The company, Xiamen Cheng Shin Rubber Industry Co., Ltd., Jining Chimaike Wheel Co., Ltd., Qingdao Elite Rubber Co., Ltd., Michelin (China) Investment Limited Company, Jiangsu Top Tire Co., Ltd. The main drafters of this document are. Wu Hui, Yan Jieqiong, Sui Anquan, Chen Chuanhui, Li Liping, Xu Lihong, Li Shuhuan, Yuan Yan, Fang Erzhen, and Liu Lin. Wang Zhiping, Xu Xueqiang, Chen Jianming, Chang Yong, Mu Chenglong, Zhou Ling, Liu Genchun, Zheng Rui, Li Miaomiao, and Mou Shouyong. The release history of this document and the document it replaces is as follows. ---First published in 1982, the standard was named "Agricultural Tire Specification Series". It was first revised in.1991 and second in.1999. ---The standard was revised for the third time in.2008, and its name was changed to "Specifications, Dimensions, Air Pressure and Load of Agricultural Tires". The fourth revision was in.2017. This is the fifth revision. Agricultural tire specifications, dimensions, air pressure and load

1 Scope

This document specifies the method of representing agricultural tire specifications, tire specifications, dimensions, air pressure and load, tire tread pattern, and tire valves. This document applies to new agricultural pneumatic tires.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 6326 Tire Terminology

3 Terms and Definitions

The terms and definitions defined in GB/T 6326 apply to this document. 4.Methods of representing tire specifications Agricultural tires are defined and described through tire specification markings and other markings. Example. Examples of agricultural tire specification markings. ...