超清版 GB/T 2978-2024 轿车轮胎规格、尺寸、气压与负荷

ICS 83.160.10
CCS G 41
GB/T 2978—2024
轿车轮胎规格、尺寸、气压与负荷
Size designation， dimensions， inflation pressure and
load capacity for passenger car tyres
2024⁃09⁃29 发布2025⁃04⁃01 实施
国家市场监督管理总局
国家标准化管理委员会发布
代替GB/T 2978—2014

目　　次
前言··························································································································Ⅲ
1　范围·······················································································································1
2　规范性引用文件········································································································1
3　术语和定义··············································································································1
4　轮胎规格的表示方法··································································································1
5　轮胎规格、尺寸、气压与负荷·························································································2
6　气门嘴··················································································································41
附录A（ 规范性）　负荷指数和负荷能力的对应关系·····························································43
附录B（ 规范性）　速度符号和最高行驶速度的对应关系·······················································44
附录C（ 规范性）　新胎最大、最小外缘尺寸计算及修约规定···················································45
表1　80 系列轿车子午线轮胎··························································································3
表2　75 系列轿车子午线轮胎··························································································5
表3　70 系列轿车子午线轮胎··························································································6
表4　65 系列轿车子午线轮胎··························································································8
表5　60 系列轿车子午线轮胎·························································································10
表6　55 系列轿车子午线轮胎·························································································13
表7　50 系列轿车子午线轮胎·························································································15
表8　45 系列轿车子午线轮胎·························································································18
表9　40 系列轿车子午线轮胎·························································································21
表10　35 系列轿车子午线轮胎·······················································································23
表11　30 系列轿车子午线轮胎·······················································································26
表12　25 系列轿车子午线轮胎·······················································································29
表13　高负荷（HLa）轿车子午线轮胎················································································31
表14　T 型临时使用的备用轮胎·····················································································32
表15　保留生产的轿车子午线轮胎·a··········