Your current rims (18 * 8) have offset 34 and this is exactly the same for the old 3 series E90/92/93. Therefore, if you can find an used set from old 3 series, then you should be able to save some $.
If you are downsizing to 17". You can do 17 * 7.5 et 37 or 17 * 8 et 34. Same as the old 3 series use.
Last edited by bobblehead; 08-23-2012 at 05:12 PM..
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