TIRE FOR MOTORCYCLE FOR RUNNING ON ROUGH TERRAIN

A tread portion of a tire includes a plurality of shoulder blocks and a plurality of middle blocks An inner edge B in the tire axial direction of a tread surface of each shoulder block protrudes on an outer side in a tire radial direction with respect to a virtual profile A side surface S on the inner side in the tire axial direction of each shoulder block includes one first side surface S extending from the inner edge B toward a groove bottom, and at least one second side surface S extending from a bottom side end of the first side surface S toward the groove bottom, and the second side surface S is a surface inclined toward the inner side in the tire axial direction relative to the first side surface S