Patent ID: 7886788

Claim:
A pneumatic tire comprising a tread portion, a pair of sidewall portions, a pair of axially spaced bead portions, an annular tire hollow forming a closed tire cavity when the tire is mounted on a wheel rim, a plurality of noise dampers each made of a spongelike multi-cellular material and disposed in the tire hollow, the noise dampers secured to an inner surface of the tread portion to extend in the circumferential direction of the tire at axially different positions, and the total volume of the noise dampers being in a range of from 0.4 to 20% of a volume of the tire cavity, wherein the tread portion is provided with a plurality of circumferentially extending main grooves, and on the radially inside of each of the main grooves which has a width Wg at the tire outer surface, one of the noise dampers which has a width Ws in a range of from 1.0 to 4.0 times the width Wg is located so as to cover the width Wg of the main groove.