| 摘要 |
PROBLEM TO BE SOLVED: To provide a tire the heal and toe wearing of which is suppressed by making a block maximum length in a tread circumferential direction on a tread surface longer than a maximum width length of the block and by making a block width longer from a block end in the tread circumferential direction toward a block center, and which has enhanced wearing resistance performance as a result.SOLUTION: Block rows 7 and 8 adjacent to a tire equatorial plane C are arranged in such a way that circumferential-direction positions of blocks 6 which are adjacent to each other in a tread width direction are made different from each other between at least two rows of the block rows 7 and 8. A plurality of circumferential-direction grooves 2 and 3 which divide at least two rows of the block rows 7 and 8 are inclined in a tread circumferential and width direction and extended, and one or more circumferential-direction grooves 2 sandwiched between at least two rows of the block rows 7 and 8 are used as circumferential-direction narrow width grooves having a groove width enabling the groove walls to contact with each other in a road surface contact region. Opposed groove walls of the circumferential-direction narrow groove are each formed in convex and concave forms in which the opposed groove walls are engaged with each other in the extension and depth direction of the circumferential-direction narrow groove 2 in the road surface contact region. |
