Patent ID: 6212947
Filing Date: 2001-04-10
Classification: G01M

Abstract:
A method for estimating a tire wear life which comprises:a step of obtaining a friction energy of the tire Ewf in a state in which the tire is free rolling, a friction energy of the tire Ewa in a state in which the tire is free rolling and set at an initial toe angle, a friction energy of the tire Ews in a state in which a side force is applied to the tire, a friction energy of the tire Ewd in a state in which a driving force is applied to the tire, and a friction energy of the tire Ewb in a state in which a braking force is applied to the tire;a step of obtaining a wear resistance index G1 of rubber of a tire tread portion;a step of obtaining a friction energy Ew expressed by a total of the friction energies Ewf, Ewa, Ews, Ewd and Ewb; anda step of estimating the tire wear life on the basis of a product of the wear resistance index G1 and a reciprocal of the friction energy Ew (1/Ew), i.e., G1.times.(1/Ew).