[ansibe]

I had bad luck with cool carbons.
I went from worn oe pads to new CCs all around on original rotors. Brake judder at my first track event was so bad I abandoned the day. $400 down the tubes. This setup is absolutely fine on the road. No judder before or after the track day.

I made a serious (but unsuccessful) attempt to clean the discs and bed the CCs before the track day. I have little doubt the judder was due to uneven deposits. Two weeks of normal driving did not clean up the rotors (400 km). I should have just bought race pads and run them for the two weeks!

My solution was new Performance Friction rotors and pads. $2000.

For sale: Nearly new CC pads for M3 - $2000, or best offer ....