System for measuring and correcting vibrations generated in vehicular tires

Abstract From the Canadian patent

A system for correcting a rubber tire for vibration producing forces generated in the tire when operated under load and at cruising speed wherein the, tire is revolved at a cruising speed equal to from 50- 90 miles per hour under a load simulating the weight load supported by the tire in normal use to develop centrifugally generated forces in the tire measuring, the magnitude and location of the centrifugally generated forces developed in the revolving tire the measured, forces comprising (a) forces generated by peripheral non-uniformities, and (b) forces developed by the lack of tire symmetry, the tire being corrected for both the (a) and (b) forces in two stages, the first stage …