| 摘要 |
PROBLEM TO BE SOLVED: To improve drainage performance, snow road performance, and ice road performance with a high balance.SOLUTION: A pneumatic tire includes a tread part 2 dividedly provided with a middle block 6 partitioned with a shoulder main groove 3A, a center main groove 3B, an a middle lateral groove 4B. The average groove width W2g of the middle lateral groove 4B is 7 -11% of the maximum length La of the middle block 6 in the tire circumferential direction. A middle block lateral edge 10 consists of a middle inner part 11 extending by inclination from the center main groove 3B to one side, a middle center part 12 continuous to the middle inner part 11 to bend to the one side, and a middle outer part 13 continuous to the middle center part 12 and continuous to the shoulder main groove 3A by inclination to the one side. A middle inner vertical edge 17 and a middle outer vertical edge 18 keep irregularities formed of a plurality of circumferential pieces 20 inclined reversely to the middle inner part 11 and axial pieces 21 joining the circumferential pieces 20. |
