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 (111, 113, 115), 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 (71, 73, 75), two convex sides, and one planar side, (ii) three concave sides (91, 93, 95) and three convex sides, or (iii) three concave sides (71, 73, 75) and three planar sides (72, 74, 76); 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 (91, 93) and two convex sides (94, 96) 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 (111, 113, 115), 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 (71, 73, 75), two convex sides, and one planar side, (ii) three concave sides (91, 93, 95) and three convex sides, or (iii) three concave sides (71, 73, 75) and three planar sides (72, 74, 76); 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 (91, 93) and two convex sides (94, 96) circumferentially separated by a third concave hollow.