| 摘要 |
PROBLEM TO BE SOLVED: To provide a run-flat tire devised to improve kinetic performance on an ice road surface in punctured travelling, especially a starting property while improving riding comfortability on a general road surface and steering stability on a snow road surface in non-punctured travelling. SOLUTION: Three-layer belt layers 8, 9, 10 are arranged on the outer peripheral side of a carcass layer 6 on a tread part 4, cord anglesα,β,γof cords 8c, 9c, 10c constituting the belt layers 8, 9, 10 relative to the tire peripheral direction are set toα=15 to 30°on the innermost belt layer 8,β=40°or more on the intermediate layer 9 andγ=35 to 70°on the outermost belt layer 10. COPYRIGHT: (C)2007,JPO&INPIT
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