Quote:
Originally Posted by mexicobmw
Flzrider thanks for the link, I had looked at a space saver but for the money I rather have a full size spare just can't figure if the f30 wheels will clear the brakes and what tire size will be the same diameter on those 18s.
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The front and rear tires on the 1M have different outside diameters, but the one you want to match is the rear tire diameter (due to the locking diff). There are multiple tire size combinations that will match the O.D. of the rear tire. Use this site to calculate the O.D.
http://www.1010tires.com/Tools/Tire-Size-Calculator