This invention relates to a tire having a directional tread pattern with a first shoulder region, a central region, and a second shoulder region, the tire having a plurality of studs in the first shoulder region, the second shoulder region, and the central region; wherein at least some of the plurality of the studs in the central shoulder region extends longitudinally into the tread member in a direction inclined relative to the normal of the outer surface of the tread member by an angle in the circumferential direction of the tire, and wherein at least some of the studs in the first shoulder region and the second shoulder region extend longitudinally into the tread in a direction inclined relative to the normal of the outer surface of the tread in a direction different from the studs in the central region.