A wheel rim 1 for a tire 2 including a rim portion 1A having a rim body 5 and a pair of flanges 6, the rim body 5 having seat portions 5a for seating bead portions 2c of the tire 2 at both ends of the rim body 5 in a rotation axis direction thereof, and the pair of flanges 6 being continuously provided on both sides of the rim body 5 and extending radially outward, wherein convex portions 9 which extend in a direction intersecting with a tire circumferential direction are provided at distances from one another in the circumferential direction on an outer surface 6o, which does not come into contact with the tire 2, of the flanges 6 in the rotation axis direction and/or on an inner surface of the rim body 5 in a radial direction.