Wheel Hub: Description and Operation

The wheel hub is constructed with axle-free wheel bearings. The wheel bearing are double row, angular contact bearings, and being permanently lubricated are therefore maintenance free. Bearings can not be replaced individually. The hub has a lightweight design and is directly centered on the bearing.
From and including M1988- the wheel hub thickness as increased from 10 to 13 mm to lengthen the thread for the wheel studs.