| abstract |
A rubber composition capable of producing a pneumatic tire having good rubber properties, light weight and good durability even when the gauge of an inner liner rubber and / or insulation rubber is reduced, and A pneumatic tire using the same is provided. A tire rubber composition used as an inner liner rubber and / or an insulation rubber of a pneumatic tire, wherein an average major axis (A) and an average minor axis (B) with respect to 100 parts by mass of a rubber component. ) Is a rubber composition for tires formed by blending paper fibers having a ratio (A) / (B) in the range of 1.1 to 30 within a range of 1 to 15 parts by mass. [Selection] Figure 1 |