| abstract |
PROBLEM TO BE SOLVED: To provide a pneumatic tire having a tire member produced by using a rubber composition having excellent workability and tire characteristics. SOLUTION: (A) Mooney viscosity (ML 1 + 4,100 ° C. ) is 43 to 70, and (B) Ratio (Tcp / ML) of 5 mass% toluene solution viscosity (Tcp) to Mooney viscosity (ML 1 + 4,100 ° C.). 1 + 4,100 ° C ) is 0.9 to 1.7, (C) ML 1 + 4,100 ° C When the torque at the end of measurement is 100%, the stress relaxation time (T80) until the value decays by 80% is 10.0-40.0 seconds, (D) Polybutadiene (a) having a molecular weight distribution (Mw / Mn) of 2.50 to 4.00 and (F) a ratio of cis structure in microstructure analysis of 98 mol% or less, and other rubbers (a). A pneumatic tire having a tire member produced by using a rubber composition containing b) and a rubber reinforcing material (c). [Selection diagram] None |