| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic radial tire for delaying timing of replacement and abandonment of the tire by reducing state change of a groove in a shoulder land part row even when the tire reaches the last stage of wear, obtaining superior wet performance and steering stability even when the tire is new, or at the initial or last stage of wear, thus advantageously improving wear resistance. SOLUTION: The five land part rows 5, 6, 7 are divided on a tread 1 by circumferential direction main grooves 2, 3 continuously extending in a circumferential direction. Among the circumferential direction main grooves 2, 3, the pair of shoulder main grooves 3 is positioned at the outermost of the tread 1. One lug groove 9 extending from the shoulder main groove 3 to the tread side edge 4 side and ending in the shoulder land part row 5, and the other lug groove 10 extending from the tread side edge 4 face to the shoulder circumferential groove 3 side and ending in the shoulder land part row 5 are alternately disposed in a circumferential direction in the pair of shoulder land part rows 5 divided at a space to the tread side edge 4. COPYRIGHT: (C)2010,JPO&INPIT |
