My PF-08 broke (front driver side-inside pad) into pieces at VIR. I contacted guys at PF and they were shocked and told me i heated them up too much.
they were nice and sent me PF-06 front set.
I liked how they handled it.
Be careful, it made a huge scratch on my rotor too.
I suggest you to switch to a pad with clip.
Btw, i have to give some credit to PF pads. the bite power of PF-08 was truly amazing but again, it broke into pieces on VIR at 140mph
BMW M3 E92 - Silverstone II