| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire which improves traveling durability of the tire at run flat traveling, and improves vibration and riding comfort performance of the vehicle in the normal state of the tire. SOLUTION: The pneumatic tire is equipped with a tread part 1, a pair of side wall parts 2 extending inward in the radial direction from the both side parts of the tread part 1, a pair of bead parts 3 continuing in an inner peripheral side of the respective side wall parts 2, and carcasses 5 provided extending toroidally between the beat cores 4 disposed at the respective bead parts 3. In the pneumatic tire, a reinforcing rubber 9 having an approximately crescent shaped cross section in the radial direction is disposed mainly in the inner side part of the side wall part 2, and the bending rigidity of the reinforced rubber 9 in the radial direction cross section is changed to a plurality of kinds of large and small at the required pitch in the periphery direction. COPYRIGHT: (C)2004,JPO&NCIPI
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