A stud configured to be inserted into a tread of a tire, the stud comprising: a tip end configured for protruding from the tread portion for contacting a road surface; a base including a flanged bottom portion provided on an end of the stud opposite the tip end and, when the stud is inserted in the tread , extending radially outwards, a stump portion provided between the bottom portion and the tip end , and a shank portion interconnecting the stump portion and the bottom portion of the base , the base being configured for being embedded and secured in the tread of the tire in which the stud is configured to be installed; wherein the circumferential line or cross-section of the flanged bottom portion , when viewed in top view onto the stud along an axis from the tip end to the flanged bottom portion , consists of or comprises one semi-cylindrical or semi-ellipsoidal side and either three planar sides , one planar side and two concave sides, or two planar sides and one semi-cylindrical, semi-ellipsoidal or concave side; characterized in that the tip end has, when viewed in top view onto the stud along an axis from the tip end to the flanged bottom portion , a circumferential line or cross-section consisting of or comprising (i) three concave sides , two convex sides, and one planar side , (ii) three concave sides and three convex sides, or (iii) three concave sides and three planar sides ; and/or in that the cross-section or circumferential line of the stump portion includes a flat side circumferentially disposed between first and second concave hollows and two convex sides circumferentially separated by a third concave hollow . a tip end configured for protruding from the tread portion for contacting a road surface; a base including a flanged bottom portion provided on an end of the stud opposite the tip end and, when the stud is inserted in the tread , extending radially outwards, a stump portion provided between the bottom portion and the tip end , and a shank portion interconnecting the stump portion and the bottom portion of the base , the base being configured for being embedded and secured in the tread of the tire in which the stud is configured to be installed; wherein the circumferential line or cross-section of the flanged bottom portion , when viewed in top view onto the stud along an axis from the tip end to the flanged bottom portion , consists of or comprises one semi-cylindrical or semi-ellipsoidal side and either three planar sides , one planar side and two concave sides, or two planar sides and one semi-cylindrical, semi-ellipsoidal or concave side; characterized in that the tip end has, when viewed in top view onto the stud along an axis from the tip end to the flanged bottom portion , a circumferential line or cross-section consisting of or comprising (i) three concave sides , two convex sides, and one planar side , (ii) three concave sides and three convex sides, or (iii) three concave sides and three planar sides ; and/or in that the cross-section or circumferential line of the stump portion includes a flat side circumferentially disposed between first and second concave hollows and two convex sides circumferentially separated by a third concave hollow . <EOS>