Truck and bus tyres. Methods of measuring tyre rolling circumference. Loaded new tyres Ingestion-build-189776 This International Standard defines criteria

This International Standard defines criteria that characterize geometrical uniformity of wheels and describes principles of measurements of these criteria

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Truck and bus tyres. Methods of measuring tyre rolling circumference. Loaded new tyres Ingestion-build-189776 This International Standard defines criteria1 Scope This International Standard 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