Pneumatic tire with tread including three dimensional sipes having at least two tie bars

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 (4a) constituting a center region of the tread portion is greater than the groove width of a sipe formed in each of the blocks (4b) constituting edge regions of the tread portion,
• at least the sipes formed in the blocks (4a) constituting the center region are three-dimensional sipes (5a) each having a zigzag shape extending in the width, circumferential and radial directions of the tire,
• each of the three-dimensional sipes (5a) 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.