Patent ID: 7671132

Claim:
A pneumatic tire comprising a ground contacting tread, the tread comprising a rubber composition comprising from 30 to 70 parts by weight, per 100 parts by weight of elastomer (phr), of a styrene-butadiene rubber having a bound styrene of at least 36 percent by weight; from 70 to 30 phr of a rubber selected from polybutadiene rubber and polyisoprene rubber; from 1 to 40 phr of a polyalphaolefin having a glass transition temperature Tg below −60° C.; from 1 to 20 phr of a resin derived from styrene and alphamethylstyrene having a glass transition temperature Tg ranging from 20° C. to 100° C.; and from 30 to 150 phr of silica; wherein the styrene-butadiene rubber is viscoelastically incompatible with the rubber selected from polybutadiene rubber and polyisoprene rubber.