Quote:
Originally Posted by Ferus
Great information. Has been helpful.
Does any one know the offset on factory "M" wheels -COMPARED TO- offset on factory "non-M" wheels?
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it depends on which "non-M" wheel you have... different styles have different specs. here is comparo of style 203 to style 224m...
style 203...
front = 18" x 8.0" et47
rear = 18" x 8.5" et50
style 224m...
front = 18" x 8.0" et42
rear = 18" x 9.0" et30
if you were to put 224m's on a non-///m z4 (coming from 203's)...
front = 5mm MORE inner clearance (strut), 5mm LESS outer clearance (fender)
rear = 14mm MORE inner clearance, 26mm LESS outer clearance (sticks out from fender on stock suspension and no camber adjustment)
great website for wheel/tire size comparison...
http://1010tires.com/WheelOffsetCalculator.asp
http://www.1010tires.com/TireSizeCalculator.asp