| 摘要 |
PROBLEM TO BE SOLVED: To uniformly maintain rigidity of blocks of flat parts, and to effectively restrict abnormal abrasion without damaging draining performance. SOLUTION: This tire is provided with a lateral groove including an acute- angled inclination part having a lateral groove wall surface Ra which crosses a vertical groove wall surface Qa of a vertical groove extended in a tire circumferential direction at an angleαof 5-45 deg.. Close to a crossing part 14 and at the acute-angled inclination part, a tie bar 15 extended in a length direction connecting the lateral groove wall surfaces Ra, Rb on both sides of the acute- angled inclination is provided. A protruded height (d) of the tie bar 15 is set to be 0.3-0.8 times a lateral groove depth D, and a length L of the tie bar 15 is set to be 0.1-0.5 times a length L0 of the acute-angled inclination part. |
