Patent ID: 7281556

Claim:
A pneumatic tire comprising a tread portion, the tread portion having blocks provided with sipes, the sipes having an open top end that opens to a block surface and a bottom, and a configuration of the sipes in a plane parallel with the block surface comprising a zigzag part, wherein the zigzag part displaces upon turning back to one side and to the other side in a length direction of the sipes in the course from the open top end to the bottom, wherein a first sipe and a second sipe, in which positions of the turn-back points of displacement in the length direction differ from each other, are included in at least one of the blocks; and wherein the blocks are arranged in that sipes of a large amount of displacement of the turn-back points of displacement in the length direction are disposed on both end sides in the tire circumferential direction while sipes of a small amount of displacement of the turn-back points of displacement in the length direction are disposed on a central side of the tire circumferential direction.