Abstract: In an uneven wear-resisting heavy duty pneumatic tire tread including main grooves; land areas separated by grooves; and a stepped zone, within a land portion, located radially inside the tread contour line and bounded by narrow grooves, having a first lowered radial depth forming a wear-sacrificing portion, the improvement comprises at least a radially-directed circumferential portion of one of two radially outermost circumferentially-extending ground contact areas of the land portion, laterally terminating into one of the stepped zone grooves, with a circumferentially relieved first portion, the maximum depth thereof having a second lowered surface depth, with respect to the tread contour line, this second lowered surface depth differing from the first lowered surface depth, the relieved portion taking the shape of a surface of revolution, with the laterally directed surface thereof being one of a straight, curved, undulating, stepped, and scalloped line.