| 摘要 |
PROBLEM TO BE SOLVED: To enhance side rigidity while maintaining linearity. SOLUTION: A side reinforcement rubber layer 9 having a cross section of an approximately crescent shape extending a central portion 9M having the maximum thickness Tm to an inner side and an outer side in a tire radial direction while gradually reducing the thickness is provided on an inner side of a carcass 6 of a side wall part 3. The rubber hardness of the side reinforcement rubber layer 9 is 60-100°, the maximum thickness Tm is 0.5-3.0 mm. Outer end height Ha of the side reinforcement rubber layer 9 from a bead base line BL is in a range of 0.85-1.40 times of tread end height H1, and inner end height Hb is smaller than flange height Hf of a rim. COPYRIGHT: (C)2008,JPO&INPIT
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