<p>This International Standard specifies two methods for measuring, under loaded conditions, the rolling</p>
<p>circumference and revolutions per unit distance (kilometres) of new tyres for use on passenger cars. The first is a</p>
<p>drum method that consists of loading a test tyre mounted on a free axle against a driven road wheel, or drum, of</p>
<p>specified diameter. The second involves using a vehicle whose drive axle is equipped with the test tyres driven on</p>
<p>a straight, paved road.</p>
<p>This International Standard is applicable to all passenger car tyres. However, the values obtained from the</p>
<p>measurements are not intended to be used as benchmarks for performance or quality.</p>
Registration number (WIID)
31325
Scope
<p>This International Standard specifies two methods for measuring, under loaded conditions, the rolling</p>
<p>circumference and revolutions per unit distance (kilometres) of new tyres for use on passenger cars. The first is a</p>
<p>drum method that consists of loading a test tyre mounted on a free axle against a driven road wheel, or drum, of</p>
<p>specified diameter. The second involves using a vehicle whose drive axle is equipped with the test tyres driven on</p>
<p>a straight, paved road.</p>
<p>This International Standard is applicable to all passenger car tyres. However, the values obtained from the</p>
<p>measurements are not intended to be used as benchmarks for performance or quality.</p>
