Can you do a 40mm et on 10" out back?
I personally think 8.5 up front and 9.5 out back is more than enough...we're not laying down THAT much power. Yet.
2012 335i Mineral Gray
M Performance Whore: PPK|Exhaust|Brakes|Performance Suspension Struts & Springs|LSD|Black Kidney Grilles|CF Spoiler and Mirror Caps|Bav Stage 1|400Ms|ER CP/IC/DP | Dinan CAI |BMWF30.com