| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire improving durability by reducing compressed distortion added on organic fiber cord at both width end portions of a folded belt layer, even when the folded belt layer using the organic fiber cord is structured. SOLUTION: The tire 1 comprises a carcass 3, and a belt 7 composed of at least two belt layers 5, 6. Between the adjacent belt layers 5, 6, cords 8, 9 form intersecting belts intersecting each other across a tire equator surface E. The innermost belt layer 6 is composed of a main body 10, and a folded portions 12, 12. The cord structuring the folded belt layer 6 is organic fiber cord. On the outside and inside in a tire diameter direction of the folded belt layer 6, an upper side belt reinforcing layer 14 and a lower side belt reinforcing layer 16 wherein cords actually extend in a tire circumferential direction are respectively arranged. The upper side belt reinforcing layer 14 and the lower side belt reinforcing layer 16 clip a width end portion 11 of the folded belt layer 6. COPYRIGHT: (C)2006,JPO&NCIPI
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