| abstract |
The present invention aims to provide a rubber composition which has good processability, particularly, a relatively high torque rise rate when a rubbery polymer and a filler are kneaded by a mixer, can be easily kneaded, and has good dispersibility of the filler and excellent low hysteresis loss. The rubber composition of the present invention comprises 100 parts by mass of a rubbery polymer and 5 to 150 parts by mass of a filler, wherein the rubbery polymer comprises at least two types of modified conjugated diene polymers (A) and (B), the content of the modified conjugated diene polymer (A) in the rubbery polymer is 30% by mass or more, and the modified conjugated diene polymers (A) and (B) each have specific characteristics. |