The invention relates to a radial bearing unit of a vehicle wheel (1) which is driven via an output shaft (5), having a constant velocity joint (13) for the output shaft, which constant velocity joint is provided, with regard to the vehicle centre (6), outside a wheel bearing (12) which has an inner ring (12a) and an outer ring (12b) and rolling bodies (12c, 12d) which are guided between them, the outer (as viewed in the radial direction (R)) joint body (13c) of which constant velocity joint (13) in each case both carries the vehicle wheel directly or indirectly and is supported via the wheel bearing on a wheel carrier (7) which forms a constituent part of the vehicle chassis, wherein the outer joint body is connected to the outer (as viewed in the radial direction) ring of the wheel bearing, while the inner ring of the wheel bearing is supported on the wheel carrier. The inner ring of the wheel bearing is preferably configured so as to widen conically towards the vehicle centre, with the result that an inner (with regard to the vehicle centre) rolling-body group (12c) runs on a greater diameter of the inner wheel-bearing ring (12R) than an outer rolling-body group (12d). Here, in order to fasten the wheel to a hub (11) which is connected to the outer wheel-bearing ring and the outer joint body, wheel bolts (2) can lie outside the outer rolling-body group, as viewed in the radial direction, and can overlap the latter with its end section.