| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pneumatic tire in which a run-flat durability is improved without increasing its weight. Ž<P>SOLUTION: The pneumatic tire 1 includes a reinforcing rubber layer 7 having a crescent-shaped section arranged inside in a width direction at a sidewall part 6 and a first reinforcing layer 10 arranged more outside in a width direction than the reinforcing rubber layer 7, extending from a shoulder part 8 up to a bead part 9 through the sidewall part 6 and having a rigidity equal to or more than that of a carcass 3. The first reinforcing layer 10 has one end 10a at outside part of its diameter that is arranged inside of the diameter of a belt layer 4, the other end 10b at inside part of its diameter arranged at a position inside of its diameter than an outer end P of the diameter of a bead core 2 by winding a bead core 2 and folding it back. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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