To provide a wheel constituted to embrace the inner circumferential side of a tire by right and left rim components in a pinching manner in which bend deformation in a vicinity of outer ends in the right-to-left direction of a rim return part of a side wall part can be suppressed as much as possible when a load is applied to a shoulder part of the tire, and as a result, the width of the tire can be increased without considerably reducing the compression rate of a rim fitting part or the like.

Right and left side faces 22 of an outer circumferential part 11 of a tire 3 are formed in inclined surfaces inclined in the inwardly moving right-to-left direction inwardly in the radial direction of the wheel with respect to the plane orthogonal to the right-to-left direction. The angle θ of inclination of the side faces 22 of the outer circumferential part 11 of the tire with respect to the plane orthogonal to the right-to-left direction is set to satisfy inequalities 10° ≤ θ ≤ 50°.