2004 Z4 Non-M - Stock suspension
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19x8.5 ET38 (235/35/19) - Rubs a little on big dips, should go with 225/30 instead
19x9.5 ET45 (265/30/19) - No issues
Wheels are MRR GT-1's $150.00 each shipped. Great deal from this Ebay seller.
http://stores.ebay.com/aspiremotoring/