Searching the Hub part numbers can sometimes lead to dimensions and you at leas can get length/height.
Quote:
Originally Posted by Kosmic
I think hub is 8mm longer and the wheel carrier has been set at the caliper mount to 8mm further.
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I cannot confirm this. The closet I got was e90post members saying it is the rear Knuckle that makes it different, while keeping Rotor, Hub & Caliper centered correctly.