Pneumatic tire

A pneumatic tire comprising, on a tread portion of the tire, crown main grooves extending circumferentially on both sides of a tire equator, shoulder main grooves extending circumferentially on axial outside of the crown main grooves, a crown rib between the crown main grooves, a pair of middle ribs between the crown main grooves and the shoulder main grooves, and a pair of shoulder ribs between the shoulder main groove and tread edge, wherein the shoulder rib is provided with shoulder lateral grooves spaced at a pitch Ps, the shoulder lateral groove extends at an angle ± of from 65 to 115 degrees with respect to a tire circumferential direction, from axial outside of the tread edges to axial inside, the middle rib is provided with middle inclined grooves spaced at a pitch Pm, the middle inclined groove extends at an angle ² of from 0 to 75 degrees with respect to the tire circumferential direction, axially inward from the shoulder main groove, and has an axial inner end terminated within the middle rib, the crown rib is provided with a plurality of crown lateral grooves which cross over the crown rib and are spaced at a pitch Pc, a circumferential length Lm of the middle inclined groove is 70 to 125% of the tire circumferential pitch Pm of the middle inclined grooves, the tire circumferential pitch Pm of the middle inclined grooves is of 2.5 to 4.0 times the pitch Ps, and the pitch Pc is larger than the pitch Ps and smaller than the pitch Pm.