| 摘要 |
PROBLEM TO BE SOLVED: To suppress generation of heel-and-toe wear in a shoulder block while excellently maintaining drainage property and traction performance till the last stage of wear. SOLUTION: The shoulder block 13 composing a shoulder block row 12 is partitioned by main grooves 3 of both sides, a tread end, an outside lug groove 9, a widthwise inside narrow groove 10 of the shoulder, and a circumferential narrow groove 11 of the shoulder connecting the inside narrow groove 10 of the shoulder widthwise and the outside lug groove 9. Platforms 14, 15 are disposed in the widthwise inside groove 10 of the shoulder and the circumferential narrow groove 11 of the shoulder respectively. The deformation is suppressed by complementing rigidity by the shoulder block 13 circumferentially adjacent to each other in the tire and uneven wear resistance is improved by these narrow grooves. COPYRIGHT: (C)2007,JPO&INPIT |
