A pneumatic tire with a tread has crown main grooves, shoulder 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. The shoulder rib has shoulder lateral grooves spaced at a pitch Ps. The middle rib has middle inclined grooves spaced at a pitch Pm. The crown rib has a plurality of crown lateral grooves which cross over the crown rib and are spaced at a pitch Pc. The pitch Pc is larger than the pitch Ps and smaller than the pitch Pm.