Abstract

Experiments to evaluate the wear of tires on vehicles are run for various purposes. Compounds may be compared, tread on tire designs evaluated, or an assessment of tread life made. These are several but by no means the only experimental objectives. Although the objectives may vary, all evaluation methods include common steps. This paper describes the procedural steps to be followed to achieve a treadwear evaluation, discusses the results of such experiments, and makes the following recommendations concerning the design of the course. The course should: vary the terrain, the pavement composition, and its geometric features; demand a variety of vehicle maneuvers; wear tires at moderate rates for precise measurement and to insure that the test will extend over several weeks; and wear tires equally at front and rear for rear axle driven vehicles.

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