PNEUMATIC TIRE

Provided is a pneumatic tire with sufficiently improved grip and durability at high-speed running, by which the pneumatic tire can exhibit excellent grip at high-speed running as well as superior durability. The pneumatic tire has a tread and is characterized in that the ground contact surface of the tread is formed by at least two types of rubber compositions different in the thermal conductivity, and the following formulas (1) and (2) are satisfied, where Wt (mm) is the cross-sectional width and Dt (mm) is the outer diameter of the tire when installed on a standardized rim and inflated to an internal pressure of 250 kPa, and V (mm3) is the virtual volume of the space occupied by the tire. 1700≦Dt2×π/4/Wt≦2827.4V+1.5×107/Wt≦2.88×105