PURPOSE: To provide a pneumatic tire to improve the irregular wear resistance having the tread pattern of the block base without deteriorating the traction.

CONSTITUTION: In a pneumatic tire where a plurality of grooves 5 are provided on the tread surface, and the tread pattern of the block base to demarcate a plurality of blocks 6 by these grooves 5 is provided, the block 6 is laminated by three or more different rubber layers, and the dynamic modulus of elasticity of each rubber layer is successively reduced from the innermost rubber layer toward the surface rubber layer to substantially make the bending stress identical in each arbitrary section.