| 摘要 |
PROBLEM TO BE SOLVED: To effectively restrain wear of a shoulder. SOLUTION: A belt layer 7 is provided with a central convex part 7C of a convex circular arc shape having the center of curvature inside a tire, and with an outer concave part 7S of a concave circular arc shape ranging from the central convex part 7C and having the center of carvature outside the tire.
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