| 摘要 |
PROBLEM TO BE SOLVED: To prevent remarkable abrasion of a tread band in the central area by forming a belt structure, which is arranged between a tread and a carcass, of a central part and a pair of side parts connected to both sides of the central part, shaping the side parts protrudedly outward, and shaping the central part recessedly. SOLUTION: In tire 1, in which both ends of a carcass 2 constructed of at least one ply 3 made of a woven base covered by rubber are arranged on a tire inside face so as to be bent upward around a fixed core 4, a belt structure 6 is arranged between the carcass 2 and a read 10. The belt structure 6 is formed so that it is provided with side parts 14, 15 serving as the first and second parts arranged in the lateral direction of a groove 11 and the third part 15 positioned between the side parts 14, 15, when it is compressed. The side parts 14, 15 are protruded outward, while the central part 16 is recessed, and these radii of curvature are set to be r1 -r3 (r1 =r2 >r3 ). |
