WARNING: This page is about a different car, the 2010 BMW X5, 2009 BMW X5, 2008 BMW X5, and 2007 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
TECHNICAL DATA - WHEEL BEARINGS AND STEERING KNUCKLE ALL
Bearing units lubricated for entire service life and cannot be disassembled
max. axial runout of wheel hub at wheel bearing flange