| 摘要 |
A pneumatic tire (1) is configured in such a manner that the left and right edges of blocks (5), the edges facing circumferential main grooves (21), have a stepped shape, the amplitude of which in the width direction of the tire varies. The front and rear edges of the blocks (5), the edges facing lug grooves (41), have a stepped shape, the amplitude of which in the circumferential direction of the tire varies. The blocks (5) each have sipes extending in the width direction of the tire. Eighty percent of the sipes (51) formed in each of the blocks (5) are semi-closed type sipes, each of which is open at one end to a circumferential main groove (21) and terminates at the other end within the block (5). Also, the projected length (P) of a semi-closed sipe (51) in the circumferential direction of the tire and the length (Wb), in the width direction, of an edge of a block (5), the edge facing a lug groove (41), have the relationship of 0.30 ≤ P/Wb ≤ 0.60. |
