Tread structure of vehicle tire

Abstract

Abstract PURPOSE:To prevent the lateral slide by arranging the lateral grooves having a prescribed length and the aslant grooves in spread form towards the end in the direction of revolution, in each certain direction, and forming each shape of the shoulder block, center block and the side block into each prescribed form. CONSTITUTION:The length of the lateral groove 13A which is formed at the center part of the tire grounded surface and crosses with the equator line O-O is set to 15-30% of the whole grounded width of the tire, and an aslant groove 13B in spread form towards the end is extended in the direction Q of revolution from the both edges of the lateral groove 13A, and the both grooves 13A and 13B are arranged in each certain direction, keeping an interval in the direction of the tire periphery. Further, the ratio of the length in the peripheral direction between a shoulder block 12 and a center block 10 is set to 1.5-2.5. Further, each starting-up wall of a side block 11 and the shoulder block 12 is formed to a starting-up wall 15 in staircase form. With such constitution, the lateral slide in high-speed turn can be prevented.

Inventors

• 👤 Tomekichi Matsushita
• 👤 松下　留吉
• 👤 Masaaki Minamitani
• 👤 南谷　全亮

Bibliographic Details