Disclosed is a hub cap (1) for a wheel (2) having a floating seat for a tire. The wheel (2) has a rim comprising a tire seat (253) which is axially extended outwards by a flange (254), the tire seats(253) being radially floating, wherein the hub cap (1) comprises a central edge (11) and an outer periphery (12); the central edge (11) includes mounting elements to be secured to the rigid portion ofthe wheel, and the central edge (11) is joined to the outer periphery (12) via an intermediate section that is deformable in such a way that the outer periphery (12) can be moved at least radially inwards in relation to the central edge (11).