Patent ID: 7188652

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 at least one of the noise dampers is provided with a water-impermeable outer coating to prevent water from infiltrating into the spongelike multi-cellular material, wherein the outer coating is a flexible film having a thickness of from 0.01 to 0.10 mm and watertightly wrapping the noise damper, and the film is fixed to a radially outer surface of the noise damper by being sandwiched between said radially outer surface of the noise damper and said inner surface of the tread portion.