A pneumatic tire has an asymmetric tread pattern. The width of an outboard shoulder main groove (3) is 3 to 4% of the tread width TW. The width of an inboard shoulder main groove (4) is 5 to 6% of TW. The width of an outboard crown main groove (5) is 6 to 7% of TW. The width of an inboard crown main groove (6) is 6 to 7% of TW. In each of the grooves (4, 5, 6), an outboard groove face's angle θ1 is more than an inboard groove face's angle θ2, wherein θ1 is 13 to 19 degrees, and θ2 is 9 to 14 degrees. In the groove (3), an outboard groove face's angle θ3 is 9 to 14 degrees, and an inboard groove face's angle θ4 is 5 to 8 degrees.