Originally Posted by Loomer

Depends how the car is used really, on Ronnies Time Attacker on track the rears in std 2wd form, with good pads were fine at around 400-450bhp, but the moment we went over the 500-550bhp a set of rear pads would last ONE session out on track, we could literally put a set of pads in it, he would go out for 4-5 laps and come in with the pads white hot and no material left on them. the Std 4x4 Discs and callipers resolved the issue straight away, so they certainly work better in terms of cooling, but if anyone could possibly reach the limit on the road is another question.