Patent ID: 8794278

Claim:
A pneumatic tire comprising a plurality of land blocks defined by circumferential grooves extending in a tire circumferential direction and lateral grooves extending in a tread width direction, wherein a stepped portion extending in the tread width direction is provided at at least one of circumferential edges of each of the land blocks, the stepped portion is formed to have the same width dimension as a width of the land block, a height of the stepped portion is the smallest for the land block closest to a tire equator line a maximum height of the stepped portion is smaller than a height of a tread surface of the land block; a height of the stepped portion is measured from a bottom of an circumferential groove provided at a circumferential edge of the land block and a height of the tread surface is measured from a bottom of the circumferential groove provided at the circumferential edge of the land block; wherein the height of the stepped portion is constant along the entire width of the land block closest to a tire equator line, and the height of the stepped portion is constant along the entire width of a land block adjacent to the land block closest to a tire equator line in a width direction and the height of the land block adjacent to the land block closest to the tire equator line is greater than the height of the land block closest to the tire equator line.