| 摘要 |
In order to provide a pneumatic tire having greatly improved durability, the present invention provides a pneumatic tire having, for example, a rubber layer (A) disposed as an inner liner on the innermost-layer side of the tire, and a rubber layer (B) disposed between the inner liner and a carcass ply layer and adjacent to the inner liner, the rubber layer (B) being composed of natural rubber alone or a rubber composition including natural rubber and synthetic dienic rubber, wherein the rubber component of the rubber layer (A) is either butyl rubber alone or a blended rubber of dienic rubber and a specified amount of butyl rubber, the rubber component of the rubber layer (B) contains a bismaleimide compound, sulfur, and a vulcanizing accelerator as cross-linking agents, the blended amounts of sulfur and the vulcanizing accelerator being within a specified range, and the breaking elongation after air heat aging at 100°C for 250 hours is 150% or greater. |
