Patent ID: 7836925

Claim:
A pneumatic tire provided with a pair of bead portions, a tread, and side portions that connect said bead portions and said tread, with a plurality of grooves that include main grooves extending in the tire circumferential direction formed on said tread, and ribs and/or blocks formed on shoulder portions of said tread by said grooves, wherein on intersection lines between a surface of said tread and a surface of said side portions, the first sipes extending in the tire circumferential direction are formed and second sipes extending in the tire circumferential direction are formed further outside of the tire width direction from said first sipes, the depth directions of said first sipes and said second sipes are parallel to the tire equatorial plane, said second sipes are deeper than said first sipes, and said second sipes are wider than said first sipes, and the height difference between a surface of a wearing region sandwiched by said first and second sipes and a surface of said side portion is between 0.5 mm and 2.0 mm wherein the intersection lines define the grounding end portions of the tread.