I found out the hard way Carbotech pads (XP-10) are not compatible with RB rotors. Uneven deposits on rotor. See RB's forum for details.
I have all 4 corners PFC-08 pads new in the box. Should be compatible with RB according to my research. PM me if interested.
2007 335 coupe, M3 suspension, Koni Yellows, Ground Control camber plates, RB rotors, Kosei K-1 17" with 255 x 40 square Direzzas or BFG R1