| 摘要 |
PROBLEM TO BE SOLVED: To increase the number of turns of landing before the next tire replacement by improving the partial abrasion resistant performance of a shoulder ribs without causing the coming off of intermediate ribs. SOLUTION: In a tread 2, six peripheral directions 3, 4 and 5 extending straightly are provided, and a center rib 6, which is continuous in the peripheral direction is also divided. Ratio of w<SB>0</SB>:w<SB>1</SB>:w<SB>2</SB>, that is, the ratio of the width w<SB>0</SB>of the center rib 6, the width w<SB>1</SB>of the shoulder rib 7 in a tread side region and each width w<SB>2</SB>of the intermediate ribs 7 and 8 are made as 1:0.65 to 0.75:0.35 to 0.45. COPYRIGHT: (C)2004,JPO |
