[G30M]

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this likely applies to M and baby M cars, may or may not apply to rest of the range, I don't know.

Also gives an idea of the X Drive system / torque split rear - for this car at least. THough I can't tell whether it's always on, or on-demand only. BMW M says the M3 AWD is on-demand only.

SOmeone with the right OBD tools could probably tell us the multiplate clutch behaviour ...