| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of more effectively suppressing H&T (heel and toe) abrasion while having high on-ice/snow performance. SOLUTION: The tread part 10 of the pneumatic tire is provided with a central circumferential groove 20 extending on a pattern center C and a pair of side circumferential grooves 30 continuously extending along a tire circumferential direction while clamping the pattern center C. A rib-like land part 40 is divided/formed by the central circumferential groove 20 and the respective side circumferential grooves 30, and a plurality of sipes 50 extending in a zig-zag shape over at least the whole area of the rib-like land part 40 are provided. The rib-like land part 40 has: a first lateral groove 60 having a first inclination groove bottom part 61 in which groove depth D1 is gradually reduced from the central circumferential groove 20 toward the inside of the rib-like land part 40; and a second lateral groove having a second inclination groove bottom part 71 in which groove depth D2 is gradually reduced from the side circumferential groove 30 toward the inside of the rib-like land part 40. The first lateral groove 60 and the second lateral groove 70 are arranged so as to be deviated in a tire circumferential direction by a predetermined pitch P on the same rib-like land part 40. COPYRIGHT: (C)2010,JPO&INPIT |
