| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of reducing the pattern noise while the off-road running performance is well maintained. SOLUTION: The pneumatic tire is equipped with rows 60 of blocks having lands 2 in the central position of the tread part 1 in such a manner as extending continuously in the tire circumferential direction and consisting of two main grooves 3 and 4 located on both sides of each land 2 in such a fashion as stretching zigzag in the tire circumferential direction and a plurality of blocks 6 partitioned by a plurality of lug grooves 5 coupling the main grooves 3 and 4 with each other, wherein each block 6 of the block row is divided into a central block portion 6a and an outer block portion 6b by a thin groove 9 whose inclination angleαto the tire circumferential direction ranges between 5-12°and groove width W is 2-4% of the grounding width CW, and these block portions 6a and 6b are arranged in dislocation relatively along the stretching direction of the thin groove 9 toward the shorter block edge facing the lug groove 5. COPYRIGHT: (C)2008,JPO&INPIT |
