FUNCTIONALIZED ELASTOMER BLEND FOR TIRE TREAD AND TIRE

A sulfur curable rubber composition is disclosed comprising, based on 100 parts by weight of elastomer (phr): at least two diene elastomers, wherein a pair of the at least two diene elastomers has a greater than 30% difference in styrene content by weight; and from 60 to 180 phr of a silica filler, preferably a precipitated silica filler. At least one of the diene elastomers is functionalized to react with the silica. Also, a tire compising such a rubber composition is disclosed.