A spacer will make no difference, the clearance is reduced because the wheel radius is reduced when you went down to an 18" rim, my winters are very close too, I'm running 18 x 9.5 VMR 710's. My clearance from brake to wheel is the same as yours, I put the wheels on today and have no issues.
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Last edited by ESC OFF; 12-04-2011 at 07:09 PM..
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