| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of achieving both ice performance and dry performance. SOLUTION: The pneumatic tire includes: a tread rubber 7 provided with a plurality of main grooves 8 extending along a tire circumferential direction and a land part 9 comparted by the main grooves 8; a belt layer 5 embedded in the tread rubber 7; and a belt reinforcing layer 6 arranged on the outer periphery of the belt layer 5. In the pneumatic tire, the belt reinforcing layer 6 has a reinforcement laminated part 10 comprising at least three layers in the inner region of the land part 9, and the reinforcement laminated part 10 is structured so that a depth from a tread surface to an outermost layer is smaller than the groove depth of the main groove 8, and the outermost layer covers the side of an end part of a layer positioned in the inner periphery thereof. COPYRIGHT: (C)2011,JPO&INPIT |
