The present invention provides a pneumatic tire having a significantly minimized influence on a change in vehicle's steering stability against a change in speed and temperature environment during driving of the vehicle. The pneumatic tire has a tread part (1), side wall parts (2), and bead parts (3). The pneumatic tire includes a carcass layer (5) having at least one sheet of carcass ply, a belt layer (6) having at least one belt ply, and at least one belt protective layer (7). A cord having a difference in heat shrinkage stress between 30 DEG C and 80 DEG C of not less than 3.0 x 10<-2>cN/dtex is used as at least one cord in the belt protective layer (7). The reduction rate of the dynamic storage modulus of elasticity E' of a coating rubber of the belt layer (6) in a temperature change from 30 DEG C to 80 DEG C is not less than 5%.