I searched but couldn't find a definitive thread on this;
What is the size of the rear hub on the X5M (74.1 or 72.5mm)? I'm going to order a winter wheel set and would like to get the correct size to avoid using hubcentric rings. I'm interested in the oem #214 10x20" wheels all around. Do the X6 wheels fit? Or am I SOL if I want to use the front 10" wide wheels on the rear and have to find hubcentric rings?
Thanks.

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2013 Cayenne GTS Basalt Black/Alcantara (Wife's Daily Driver)
2013 Porsche 911 cab Aqua over pebble and agate (My daily driver)
2010 Porsche GT3RS Black Grey/Black Alcantara (Track car)
2012 Porsche CaymanR Peridot Green with carbon sport buckets (Wife's Track car)