Wheel bearing unit for a motor vehicle and motor vehicle

A wheel bearing unit for a motor vehicle, comprising a wheel hub, a wheel bearing housing and a rolling bearing by means of which the wheel hub is mounted rotatably in relation to the wheel bearing housing, wherein the rolling bearing has at least one row of rolling elements which are guided on the wheel hub side in a bearing inner ring which is designed as a separate component in relation to the wheel hub and which is fixedly connected to the wheel hub, wherein the wheel hub has a through opening with an inner toothing, via which through opening the wheel hub is connected in a non-rotational manner to a drive journal which is provided with an external toothing,

• wherein the inner toothing is formed comprising a first toothing portion, a second toothing portion and a toothless portion which, when viewed in the axial direction, lies between the first and second toothing portions and separates the first and second toothing portions from one another, wherein the toothless portion of the inner toothing, when viewed in the axial direction, is arranged in such a way that the toothless portion is positioned radially opposite the end face of the bearing inner ring on the bearing inner side.