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      05-22-2011, 03:16 PM   #46
v3.0si
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Drives: '08 Z4C 3.0si
Join Date: Sep 2010
Location: midwest

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Quote:
Originally Posted by Ferus View Post
Great information. Has been helpful.
Does any one know the offset on factory "M" wheels -COMPARED TO- offset on factory "non-M" wheels?
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
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