The tire which possesses the revised tread section which decreases the formation of the polarized abrasion which becomes the cause of user dissatisfaction

摘要

(57) Abstract At the same time stability is high and shoulder structure of the tread section of the pneumatic tier whose wear is little. It possesses the decoupling rib in the outer part edge of the tread section, this decoupling rib is laid out lap in direction of the tire and at the same time possesses the outer part surface. The shoulder rib which possesses the outer part surface having adjoined and being laid out inside the decoupling rib. The channel is stipulated by the inside surface and the outer part surface of the decoupling rib and the shoulder rib. This channel from the outer part surface of the decoupling rib first from the base which is underneath emission direction facing to the emission direction central axis of the shoulder rib, extends to diagonal line in the direction which leaves from the emission direction central axis of the shoulder rib next. It designates the channel as the forma which agrees with the inside edge strip and the outer part edge strip of the decoupling rib and the shoulder rib mutually, outside being supported on the shoulder rib, it forms the surface part. At the same time and with this invention structure under vertical pressure and the load where emission direction stress joins to the earth section from the outer part edge it is almost equalized altogether to the principal part of the outer part surface of the shoulder rib, contact with the portion of the inside edge strip of the decoupling rib and the portion of the outer part edge strip of the shoulder rib mutually and wear of the shoulder rib is decreased cross direction stability is raised.