摩托车轮胎 轮胎滚动圆周长的测量方法 负载下的新轮胎

[中文适用范围]： 本国际标准规定了用于摩托车和轻便摩托车的新轮胎在负载条件下测量滚动周长和每单位距离（公里）转数的方法。 根据此方法获得的值不适合用作性能或质量水平。 本国际标准适用于设计和用于道路上的所有摩托车和轻便摩托车轮胎。 注：由于摩托车上的大多数车速表和里程表都是从前轮启动的，因此测试轮胎将很大程度上落入适用于前轮使用的尺寸。 然而，人们普遍认为后轮胎也将被测量。 [外文原描述]： This International Standard specifies a method for measuring the rolling circumference and revolutions per unit distance (kilometre) for new tyres, under loaded conditions, made for use on motorcycles and mopeds. The values obtained according to this method are not intended for use as levels of performance or quality. This International Standard is applicable to all motorcycle and moped tyres designed and intended for use on the road. NOTE Since most speedometers and odometers on motorcycles are activated from the front wheel, the test tyres will largely fall into sizes applicable for front wheel use. However, it is accepted that rear tyres will also be measured.