PNEUMATIC TIRE

A pneumatic tire is provided having improved quietness and improved riding comfort without sacrificing wet grip performance or hydroplaning resistance. The present invention relates to a pneumatic tire including a foam rubber layer in a sidewall, the foam rubber layer having an expansion ratio of 10 to 100% as defined by the following equation 1: Expansion ratio % = Density of solid phase part of vulcanized rubber Density of entire foam rubber 1 × 100.