标准摘要
[中文适用范围]： 本国际标准规定了两种测量卡车和公共汽车用新商用车轮胎在负载条件下滚动周长和每单位距离（公里）转数的方法。第一种方法是转鼓法，即将安装在自由轴上的试验轮胎压在规定直径的从动车轮（或转鼓）上。第二种方法是让驱动轴上装有试验轮胎的车辆在平直的铺装道路上行驶。这样获得的数值不能作为性能或质量水平。本国际标准适用于所有卡车和公共汽车轮胎。注：本国际标准不仅适用于大型卡车和公共汽车轮胎，也适用于小型卡车和公共汽车轮胎，在一些国家被称为“轻型卡车轮胎”。 [外文原描述]： ISO 9112:2008 specifies two methods for measuring the rolling circumference and the number of revolutions per unit distance (kilometre) of new commercial vehicle tyres, under loaded conditions, for use on trucks and buses. The first method is a drum method consisting of loading a test tyre mounted on a free axle against a driven road wheel (or drum) of specified diameter. The second method involves a vehicle whose drive axle is equipped with the test tyres driven on a straight, paved road. The values thus obtained are not intended for use as levels of performance or quality. ISO 9112:2008 applies to all truck and bus tyres.
英文名称Truck and bus tyres — Methods of measuring tyre rolling circumference — Loaded new tyres