RUBBER COMPOSITION FOR STUDLESS TIRE

摘要

PROBLEM TO BE SOLVED: To provide a rubber composition for a studless tire having improved slip resistance on ice and snow road by sufficiently exhibiting a microspike effect even if the surface of the ice and snow road is in a state in which a water screen is formed by melting of the surface of the ice and snow road, and further having improved abrasion resistance. SOLUTION: This rubber composition for the studless tire is obtained by blending 100 pts.wt. rubber components consisting of 40-80% dienic synthetic rubber having <=-70 deg.C glass transition temperature and 60-20 pts.wt. natural rubber with 1-20 pts.wt. hollow particles having 10-200μm particle diameters, and 20-90 pts.wt. carbon black having 60-135 m2/g specific surface area measured by nitrogen absorption, and a value of DBP oil absorption expressed by ml/100 30-55 larger than the value of the specific surface area measured by nitrogen absorption.