Pneumatic Tire

摘要

A region on a sidewall surface of at least one of a pair of side portions of a pneumatic tire includes a maximum tire width position. The region is provided with a plurality of recesses shaped as dimples varying periodically in size along a tire circumferential direction, and with a plurality of trough portions shaped as lines, disposed around each of the recesses, and extending unidirectionally so as to cover the recesses. The recesses are, for example, at least three types of circular recesses, each type having a different size. Here, the circular recesses vary stepwise in size along the tire circumferential direction. The bottom face of the circular recesses is spherical. The maximum depth of the circular recesses is constant irrespective of size, being from 0.3 mm to 1.5 mm.

主权项

1. A pneumatic tire comprising:
a tread portion; a pair of bead portions; and a pair of side portions provided on both sides of the tread portion, connecting the pair of bead portions to the tread portion; in a region on a sidewall surface of at least one side portion of the pair of side portions including a maximum tire width position, a plurality of recesses shaped as dimples varying periodically in size along a tire circumferential direction being provided, and a plurality of linearly extending trough portions being provided around each of the recesses so as to enclose each of the recesses, the trough portions respectively extending in an identical direction.