TIRE

A circumferential recess is formed on the outer surface of a tire side section, the circumferential recess being depressed inward in a tread width direction and extending in a tire circumferential direction. In a cross section along the tread width direction of the tire and the tire radial direction, a rim-side outer surface formed in an area from a rim separation point, which is the outermost point in the tire radial direction that is in contact with a rim flange, to an inner end of the circumferential recess in the tire radial direction, is formed along a first arc curve having a center of a curvature radius on the inside in the tread width direction. In the cross section, a sidewall surface formed in an area from the inner end of the circumferential recess in the tire radial direction to a bottom surface of the circumferential recess is formed along a second arc curve having a center of a curvature radius on the outside in the tread width direction.