| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire for effectively preventing lowering fatigue durability of a belt layer cord by effectively reducing compressive force acting on the belt layer cord in the vicinity of an end part of a belt layer of an innermost layer, while highly maintaining steering stability performance, in the pneumatic tire including spiral reinforcing layers. SOLUTION: This pneumatic tire including one spiral reinforcing layer or more includes a reinforcing member which is made of a plurality of organic fiber cords mutually extending in parallel, is folded back by wrapping at least one end part of a belt in a tire width direction cross section, and has one end part located between a carcass and the belt layer of the innermost layer and the other end part located between the belt layer of the outermost layer and the spiral reinforcing layer of the innermost layer, respectively. The cord in a portion located between the carcass and the belt layer of the innermost layer in the reinforcing member is extended in a direction crossing the cord of the belt layer of the innermost layer. COPYRIGHT: (C)2011,JPO&INPIT
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