A spare tire storage cover assembly a spare tire and a wheel cover. The spare tire has a tire and a metal wheel. The metal wheel defines a central attachment portion encircled by an outer rim with a wheel retaining member of a retraction device is inserted through an opening in the central attachment portion. The wheel cover has a disk portion with a first surface and a second surface, and a cylindrical portion extending from a central area of the first surface of the disk portion. The first surface has a plurality of alignment fins that extend in a radial outward direction from the cylindrical portion with distal edges thereof being dimensioned such that with the cylindrical portion inserted into the metal wheel, contact between the alignment fins and an inner circumferential surface of the outer rim centers the wheel cover relative to the metal wheel.