To prevent side skid of a tire and improve road following performance of the tire by disposing tire segments in two lines in the cross direction on the outer peripheral surface of the tire, mounting the same shifting in the longitudinal direction, forming a side groove by the side part in the longitudinal direction, and forming a vertical groove by the side part in the cross direction.

A tire segment 10a uses rubber elastic body inclined at 30 degrees in plan view, and is formed by each side part 1b in the longitudinal direction to a crown part 1a, and each side part 1x in the direction of the end. At this time, the tire segments 10a are disposed shifting from each other by a half pitch in two right and left lines on the outer peripheral surface of a wheel in the circumferential direction. A vertical groove 1Y is formed in the circumferential direction of the wheel by the respective side parts 1c of the tire segments of each line. On the other hand, an inclined cross groove 1X is formed by the respective side parts 1b of adjacent tire segments 10a in each line, and made to intersect the vertical groove 1Y in the central area of the tire to form the respective edges P, Q.