Quote:
Originally Posted by Groundpilot
I am bumping this old thread, because i want some feedback from e9x m3 owners that have used them on the track.
These rotors are slotted and save 4.7 pounds per each front rotor which is a big deal.
I have used RB rotors on my 135i for 2 seasons and they are great. But that car is about 300 pounds lighter.
There were some negative reviews in the past, and Harold in the post above does not recommend them for track use 
Would be interested to hear m3 owners opinion  |
Design and metallurgy change between those days and now can make these rotors better. Perhaps all the teething pains are gone.