Bridgestone Corporation

Nagakazu Kuwahara

Akiyoshi Shimizu

Keiichi Kurita

An object of the present invention is to provide a tire possessing improved wear resistance by optimizing configurations of block land portions. The tire is configured such that, in at least two adjacent block land portion arrayssandwiching a circumferential groove, adjacent block land portionsconstituting the block land portion arraysare arranged so as to be positionally displaced from each other in the tire circumferential direction; and a distance dbetween the block land portions adjacent in the tire width direction is shorter than a distance dbetween the block land portions adjacent in the tire circumferential direction. A groove portionbetween the block land portions adjacent in the tire width direction extends obliquely with respect to the tire width direction and the tire circumferential direction. Further, plural sets each formed by at least two adjacent block land portion arrayssandwiching the circumferential grooveare arranged; and, among the block land portions arrays, an inclination angle &#x3b8;of an extending direction of the groove portionB between the block land portions adjacent in the tire width direction of block land portion arrayslocated closest to a tire equatorial plane CL side with respect to the tire circumferential direction is larger than an inclination angle &#x3b8;of an extending direction of the groove portionA between the block land portions adjacent in the tire width direction of block land portion arrayslocated at the outermost side in the tire width direction with respect to the tire circumferential direction.

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Tokyo, Japan

Nagakazu Kuwahara