A rubber composition for use in a tire tread, the rubber composition comprising, based on parts by weight per 100 parts by weight elastomer (phr): 100 phr of conjugated diene-based elastomers comprising: 20 to 80 phr or 25 to 75 phr of a first functionalized vinyl polybutadiene rubber having a Tg in a range of from -40°C to -10°C and an isomeric vinyl 1,2-content in a range of from 65 to 85 percent, wherein the first functionalized vinyl polybutadiene rubber contains functional groups reactive with hydroxyl groups on a silica reinforcement of the rubber composition; 80 to 20 phr or 75 to 25 phr of a second functionalized vinyl polybutadiene rubber having a Tg in a range of from -108°C to -90°C and an isomeric vinyl 1,2-content in a range of from 0 to 15 percent, wherein the second functionalized low vinyl polybutadiene rubber contains functional groups reactive with hydroxyl groups on a silica reinforcement of the rubber composition; wherein the weight ratio of the second functionalized vinyl polybutadiene rubber to the first functionalized vinyl polybutadiene rubber is at least 1/1 or at least 1.5/1; and 60 to 200 phr or 80 to 160 phr of a rubber reinforcing filler comprising a combination of silica, preferably precipitated silica or amorphous synthetic precipitated silica, and carbon black in a weight ratio of silica to carbon black of at least 9/1, together with a silica coupling agent having a moiety reactive with hydroxyl groups on the silica and another different moiety interactive with the diene-based elastomers. 100 phr of conjugated diene-based elastomers comprising: 20 to 80 phr or 25 to 75 phr of a first functionalized vinyl polybutadiene rubber having a Tg in a range of from -40°C to -10°C and an isomeric vinyl 1,2-content in a range of from 65 to 85 percent, wherein the first functionalized vinyl polybutadiene rubber contains functional groups reactive with hydroxyl groups on a silica reinforcement of the rubber composition; 80 to 20 phr or 75 to 25 phr of a second functionalized vinyl polybutadiene rubber having a Tg in a range of from -108°C to -90°C and an isomeric vinyl 1,2-content in a range of from 0 to 15 percent, wherein the second functionalized low vinyl polybutadiene rubber contains functional groups reactive with hydroxyl groups on a silica reinforcement of the rubber composition; wherein the weight ratio of the second functionalized vinyl polybutadiene rubber to the first functionalized vinyl polybutadiene rubber is at least 1/1 or at least 1.5/1; and 20 to 80 phr or 25 to 75 phr of a first functionalized vinyl polybutadiene rubber having a Tg in a range of from -40°C to -10°C and an isomeric vinyl 1,2-content in a range of from 65 to 85 percent, wherein the first functionalized vinyl polybutadiene rubber contains functional groups reactive with hydroxyl groups on a silica reinforcement of the rubber composition; 80 to 20 phr or 75 to 25 phr of a second functionalized vinyl polybutadiene rubber having a Tg in a range of from -108°C to -90°C and an isomeric vinyl 1,2-content in a range of from 0 to 15 percent, wherein the second functionalized low vinyl polybutadiene rubber contains functional groups reactive with hydroxyl groups on a silica reinforcement of the rubber composition; wherein the weight ratio of the second functionalized vinyl polybutadiene rubber to the first functionalized vinyl polybutadiene rubber is at least 1/1 or at least 1.5/1; and 60 to 200 phr or 80 to 160 phr of a rubber reinforcing filler comprising a combination of silica, preferably precipitated silica or amorphous synthetic precipitated silica, and carbon black in a weight ratio of silica to carbon black of at least 9/1, together with a silica coupling agent having a moiety reactive with hydroxyl groups on the silica and another different moiety interactive with the diene-based elastomers.