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Old 04-16-2011, 07:50 AM
mpc1971 mpc1971 is offline
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Location: u.k
Join Date: Dec 2010
Posts: 48
Mein Auto: 645i vert

just used an online wheel n tyre offset calculator

assuming your oem fronts are as mine and a 14 offset
and assuming your new wheels are the 18 offset then your wheel is sitting 4mm closer to the suspension strut. so a 5mm spacer will take it back to more or less oem.
but this 4mm shouldnt really rub.
if your front offsets on new wheeels are 20 then the wheel will sit 6 mm closer to the sus. strut..

personally i would go with 10mm spacers, fill them arches and get rid of any rubing for sure

measurements taken from

hope it helps
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