Abstract: 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), up to 100 phr of a solution polymerized styrene-butadiene rubber; from 5 to 50 phr of a fatty acid monoester of formula 1 where R1 is selected from C1 to C8 linear or branched alkyl, C1 to C8 linear or branched alkenyl, and C2 to C6 linear or branched alkyl substituted with from one to five hydroxyl groups; R2 is C11 to C21 alkyl or C11 to C21 alkenyl; from 5 to 50 phr of a hydrocarbon resin having a Tg ranging from ?40° C. to 20° C.; less than 10 phr of a petroleum-derived oil; and from 50 to 130 phr of silica. optionally, from about 1 to 50 phr carbon black.

Abstract: The present invention is directed to a vulcanizable rubber composition comprising, based on parts by weight per 100 parts by weight elastomer (phr): 100 phr of at least one diene-based elastomer; from 1 to 80 phr of carbon black; from 40 to 120 phr of silica; from 1 to 20 parts by weight of a sulfur-containing organosilane per 100 parts by weight of the silica; from 0.1 to 10 phr of a tetrazine compound of formula 1 where X1 and X2 each represent a heterocyclic group; and from 0.5 to 10 phr of a zinc complex compound of formula 2 where R1 and R2 are independently selected from the group consisting of hydrogen atoms, alkyl groups, alkylene groups, hydroxyl-substituted alkyl or alkylene groups, amine-substituted alkyl or alkylene groups, and thiol-substituted alkyl or alkylene groups.

Abstract: 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), up to 100 phr of a solution polymerized styrene-butadiene rubber; from 5 to 50 phr of a fatty acid monoester of formula 1 where R1 is selected from C1 to C8 linear or branched alkyl, C1 to C8 linear or branched alkenyl, and C2 to C6 linear or branched alkyl substituted with from one to five hydroxyl groups; R2 is C11 to C21 alkyl or C11 to C21 alkenyl; from 5 to 50 phr of a hydrocarbon resin having a Tg ranging from ?40° C. to 20° C.; less than 10 phr of a petroleum-derived oil; and from 50 to 130 phr of silica. optionally, from about 1 to 50 phr carbon black.