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      05-14-2012, 02:47 PM   #5

Drives: 2013 335i M-Sport
Join Date: Aug 2010
Location: Phoenix, AZ

Posts: 539
iTrader: (0)

How much of a performance gain is there in numbers? I've never seen rotors where the holes weren't drilled all the way through; what's the benefit of what was done with the holes that don't go all the way through on these rotors vs. most other performance rotors?