| 摘要 |
PROBLEM TO BE SOLVED: To prevent a crack itself and to suppress growth of a crack even if it is generated. SOLUTION: The pneumatic tire is provided with: a carcass 2 arranged astride a pair of bead cores 12; at least one belt layer 28 arranged in the outer side in the tire radial direction of the carcass 2 and having a belt cord with a predetermined gradient angle with respect to a tire equator face; and spiral reinforcement layers 31, 32 arranged in the outer side in the tire radial direction of the belt layer 28 and having reinforcement cords spirally wound along the tire circumferential direction. The plurality of spiral reinforcement layers are arranged in portions covering end parts of a wide inside belt layer 26 and overlapped with each other in the tire radial direction. Shock absorbing rubber layers 33 are interposed on at least one space between the plurality of spiral reinforcement layers 31, 32 corresponding to the portions covering the end parts of the inside belt layer 26. COPYRIGHT: (C)2008,JPO&INPIT
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