Patent ID: 8002005

Claim:
A pneumatic tire including a plurality of grooves ( 2 ) extending at least in the circumferential direction in a tread portion of the tire and a plurality of blocks ( 4 ) formed by the grooves, the pneumatic tire comprising: the groove width of a sipe formed in each of the blocks ( 4 a ) constituting a center region of the tread portion is greater than the groove width of a sipe formed in each of the blocks ( 4 b ) constituting edge regions of the tread portion, at least the sipes formed in the blocks ( 4 a ) constituting the center region are three-dimensional sipes ( 5 a ) each having a zigzag shape extending in the width, circumferential and radial directions of the tire, each of the three-dimensional sipes ( 5 a ) is formed using a blade having a cutout such that the sipe is provided with, on the inner side thereof in the tire radial direction, at least one tie bar corresponding to the cutout ( 6 ) which has a length, in the tire radial direction, of 50 to 90% of the length of the three-dimensional sipe in the tire radial direction, and which has a length, in the tire width direction, of 1 to 5 mm, at least two or more tie bars, wherein a tie bar which is closer to the tire equator line than an other tie bar, extends to a height in the tire radial direction greater than the height in the tire radial direction of the other tie bar.