View Single Post
      02-25-2013, 01:07 AM   #25
BillionPa
Second Lieutenant
BillionPa's Avatar
2
Rep
288
Posts

 
Drives: 335i
Join Date: Feb 2013
Location: USA

iTrader: (0)

I have always used slotted rotors, and have never had the inside of the slots rust.

Generally there is a plating of some kind on the rotor that you need to wipe off before mounting the caliper, or it will get all over the pads, and that coating keeps the inside of the slots clean