| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire which suppresses deterioration of drainage of a tread part and, at the same time, improves other performances.SOLUTION: A tire 1 includes: a major groove 21 which is located on the outermost side in the tire width direction on a ground surface and is extended in a tire circumferential direction on a meridian cross section; a lug groove 22 which leads to the major groove 21 and is extended to the outer side of a tire ground end part; and a bottom-raised part SG which contains a boundary part KK leading to the major groove 21 from the lug groove 22 and is provided so as to stride over the major groove 21 and the lug groove 22. Regarding a part of the bottom-raised part SG, which is disposed on the lug groove 22, a length in a tire circumferential direction is equal to a groove width of the lug groove 22, and a length projected in a tire width direction is 50 to 150% of the groove width of the major groove 21 and, regarding a part disposed on the major groove 21, the maximum length in the tire width direction is 10 to 40% of the groove width of the major groove 21 and the maximum length in the tire circumferential direction is 100 to 300% of a circumferential direction length of the boundary part KK.SELECTED DRAWING: Figure 3 |
