PNEUMATIC TIRE

To provide pneumatic tires with excellent ride quality during highspeed driving, a pneumatic tire having a tread portion with a circumferential groove and a belt layer, wherein a monofilament cord is used as a reinforcing cord for the belt layer; and the number of arrangements e (lines/5 cm) of the monofilament cords per 5 cm in the tire width direction in the tire radial cross section of the belt layer, the distance G (mm) from the surface of the land portion closest to the equatorial plane among land portions separated by the circumferential groove to the monofilament cord, and the loss tangent (30°Ctan δ) when the rubber composition constituting the surface of the tread portion is measured satisfy (30°Ctan δ × G)/e > 0.015 is provided.