Quote:
Originally Posted by Llarry
G01 X3 and G02 X4 wheels specs...
Bolt pattern: 5 x 112. One of the problems is that BMW has used 5 x 120 for many years and is now transitioning to 5 x 112; an "experienced" wheel guy may not be up to date on this transition and get confused.
Width and offset: I know your question is about 20-inchers, but 30i model owners and those looking for 19" winter wheels may see this, so let me cover all X3 & X4 wheels. These numbers are for OE BMW wheels.
7" width offset 22mm
7.5" width offset 32mm
8" width offset 27mm
8.5" width offset 30mm
9.5" width offset 43mm
So for a 20" wheel for a M40i the stock/OE offsets are 27 front, 43 rear
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Are these negative offset or positive? I'm trying to figure out if the 18 inch rims, 9 inch wide with an offset of 40 will fit.