On the rear wheel fitting, this is from the BMW dealer manual:
Check that the wheel centering spigot and contact surfaces of the wheel hub are free of grease.
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Attention
Nature:
Components can be damaged by hard or sharp-edged objects.
Avoidance:
Avoid scratching the components; use masking tape if necessary.
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Insert the rear wheel into the centering hole.
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Warning
Nature:
The wheel studs for the cross-spoked wheel and the cast aluminium wheel differ in length. Mixing up sets of studs or using the wrong studs would mean that the rear wheel would not be correctly secured and this, in turn, could result in an accident.
Avoidance:
Use only wheel studs with the same, approved length code. Do not oil or grease wheel studs.
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Hand-tighten wheel studs (1) and then tighten in diagonally opposite sequence.
Tightening torques
Wheel flange with bushing or cut thread, M10 x 40 x 1.25, in diagonally opposite sequence
60 Nm
HAs not been mentioned but maybe you've noticed already, the BM uses Torx head bolts so a trip to your local Halfords could be an idea before you start, Torx sockets are readily available.
