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      12-30-2012, 08:34 PM   #4
Denk
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Drives: E92 M3 ZCP
Join Date: May 2011
Location: PNW

iTrader: (2)

The lower the et number=more aggressive (pushed out). i.e. I have HRE's in ZCP sizes with et 20 front and rear. That's like using a 5mm spacer in the rear and 11mm up front on ZCP wheels (et25 rear, et 31 front).