Abstract: A hubcap, i.e., a wheel cover, to be clamped on a wheel rim, includes a spring (1) configured in the form of an at least a nearly regular polygon. At least a portion of the vertices (9) or vertex zones of the polygonal spring (1) is affixed to radially elastic supports (14) of the hubcap (11) for the purpose of keeping in snap-in manner the hubcap in an illustratively annular recess against the wheel rim. The vertices or vertex zones (9) rest in rotatable manner on the supports (14) and/or the polygonal spring is discontinuous at least at a portion of the vertices or vertex zones, in order that, when an external force acts radially on the vertices or vertex zones, there may be, besides the resulting radial inward displacement of the polygonal spring (1), also an additional displacement of the polygonal spring, i.e., of the individual segments between the vertices or vertex zones of the polygonal spring.