Patent ID: 8281834

Claim:
An assembly of a pneumatic tire and a rim, comprising a noise damper in which a sponge material extending in a circumferential direction of the tire and having a volume V 2 of 0.4 to 20% of entire volume V 1 of a tire cavity formed by a rim and a pneumatic tire assembled to the rim is used in the cavity, wherein the noise damper comprises a fixing surface fixed to a surface which surrounds the tire cavity, and a free surface directed to the tire cavity, a maximum value of thickness from the fixing surface to the free surface is in a range of 5 to 50 mm, including a thick mountain portion and a thin valley portion, at least one of outer ends of the noise damper in the circumferential direction of the tire is formed into an inclined surface portion comprising a first inclined surface rising from the fixing surface and a second inclined surface extending from the first inclined surface to the free surface, an inclination angle θ 1 formed between the first inclined surface and the fixing surface is in a range of 60 to 120 degrees, and an inclination angle θ 2 formed between the second inclined surface and the fixing surface is in a range of 15 to 70 degrees and is smaller than the inclination angle θ 1 .