Patent ID: 8534336

Claim:
A pneumatic tire comprising a pair of bead portions, side wall portions extending to an outer side in a tire diametrical direction from the bead portions, and a tread portion connected to an outer end in a tire diametrical direction of each of the side wall portions, wherein an outer wall surface of the side wall portions is provided with a circumferential projection annularly extending along a tire circumferential direction, and a plurality of diametrical projections extending to an inner side in a tire diametrical direction from, and in abutting contact with, the circumferential projection and arranged so as to be spaced in the tire circumferential direction, and a gap portion formed between circumferentially adjacent diametrical projections is open to an inner side in the tire diametrical direction, wherein the outer wall surface is smooth between circumferentially adjacent diametrical projections, and wherein the diametrical projections have a plurality of projection heights and are coupled to the circumferential projection so as to substantially adjust a projection height from the inner side in the tire diametrical direction.