| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of deflected abrasion by setting a center land part laterally toward a block of each intermediate land part array and forming an inversional continuous repeating pattern zigzag rib, which is provided with a bold U-shape laterally, of cap grooves opened alternately toward both sides. SOLUTION: In a center land part 4, a zigzag rib 12, which is formed of cap grooves 11, 11 alternately opened sideward respectively from deadends slightly passing over the intermediate point of width in the center land part 4, is formed in the lateral direction so as to face blocks 10, 10 in respective intermediate land parts 6, 6. The zigzag rib 12 is provided with at least two closed sipes 13, 14, which are opened sideward alternately, per one side part. Each of the blocks 10, 10 in the intermediate land part, arrays 6, 6 is provided with at least two closed sipes 15, 16, which are alternately opened in only one end respectively. In addition, traverse sipes 17, 18 dividing the overall length around a crown part into two pieces and closed sipes 19, 20 opened in the edge of the tread part 1 are provided in blocks 9 in shoulder land part arrays 5, 5. |
