15 front 15 rear would be ideal. If you get 9.5 +25 and want that flush look you'll need a 10mm spacer, maybe 12.
8.5 +15 would be near perfect, could use a 3mm spacer to make it perfectly flush.
2009 E92 M3 | Alpine White | Black Extended | Advan RS | Turner Test Pipes | Dinan Axle-Back | OETuning | Eibach Springs | UUC SSK | VRS Front Lip | VRS Type I Diffuser | Matte Black | RPi Scoops | MS Filter | Yokohama AD08 | F1 Pinnacle
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