Patent attributes
The present invention is directed to a pneumatic tire having a tread comprising a vulcanizable rubber composition comprising, based on 100 parts by weight of elastomer (phr),(A) from about 40 to about 90 phr of a solution polymerized styrene-butadiene rubber having a glass transition temperature (Tg) ranging from −40° C. to 0° C.;(B) from about 60 to about 10 phr of polybutadiene; and(C) from 5 to 50 phr of a hydrocarbon resin having a Tg ranging from −40° C. to 20° C.;(D) optionally, a rubber process oil(E) optionally, a hydrocarbon resin having a Tg ranging above 20° C.wherein the total amount of hydrocarbon resins and oils is less than 65 phr, and the weight ratio of silica to the total of hydrocarbon resins and oils is greater than 2.(F) from 70 to 130 phr of silica.
