Pneumatic tire having tread comprising three elastomers

The invention discloses a pneumatic tire having a tread comprising three elastomers. A pneumatic tire comprising a vulcanizable rubber composition comprising: 1) 100 parts by weight of an elastomer consisting of 25 to 35 phr of a styrene-butadiene rubber, 45 to 75 phr of a polybutadiene, and 5 to 15 phr of a natural rubber or synthetic polyisoprene, wherein the styrene-butadiene rubber is functionalized and has a Tg (A) in the range of-30 to-10 DEG C; the natural rubber or synthetic polyisoprene has a Tg (B) of from-60 DEG C to-70 DEG C; and the polybutadiene is a cis-1, 4-polybutadiene having a Tg (C) of from-110 DEG C to-90 DEG C, where Tg (A)-Tg (B) > = 25 DEG C, and Tg (B)-Tg (C) > = 25 DEG C; 2) 70 to 100 phr of silica; 3) 1 to 20 phr of carbon black; 4) 1 to 15 phr of rubber processing oil; and 5) 5 to 50 phr of at least one hydrocarbon resin having a Tg > = 20 DEG C and a rosin-derived resin. 本发明公开了具有包含三种弹性体的胎面的充气轮胎。一种充气轮胎，其包含可硫化橡胶组合物，所述可硫化橡胶组合物包含：1)100重量份的弹性体，所述弹性体由25至35 phr的苯乙烯-丁二烯橡胶、45至75 phr的聚丁二烯和5