My car was delivered with Star Spoke 264.
Front 71/2JX18 ET:49
Rear 81/2JX18 ET:52
I have always had staggered setups on my BMW's and i really think you should go for staggered, not square.
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Mods: Black kidneys & side markers, blackline rear lights, 2008 side mirrors, 19" VMR 701, remapped, 135i instrument cluster, X3 Steering wheel trim, Z4M gear knob