Originally Posted by MteK
Ran them on my 335 on the track, never had a complaint. They can be a little squeaky in day to day driving, and they did wear the rotors down faster then stock, but they never faded or got soft on the track.
I went thru 3 sets. Fantastic on the track. A bit noisier than stock on the street. Be warned though these were dusting a lot more than OEM and didn't have much initial bite when it was cold.