Ron Earp
Admin
Crappy production / design / choice , kinda sets your confidence level back a bit --until we find something that can handle the pace
I don't think the brakes or rotors are a bad choice for the car at all. I think they're plenty large enough and at least on our car the braking has been exceptional. I hate to hex anyone but I hope the rotor issues are isolated to your car or rotor batch, I don't want to fight a brake issue at the moment!
Which end of the car did the rotor crack on? What sort of airflow over the rotors do you have? What pads are you using?
We're using Carbotech XP10 pads, a compound that we're very familiar with from IT racing. Aggressive with a lot of initial torque when hot, but it can be modulated. We experienced no fade at all when testing over the last two weekends at VIR. We have two stops down from 135mph to about 50 mph, and around three stops from roughly 100mph to about 60 mph. Bias is set so that the front lock just before the rears. The front rotors have good airflow, the rears have essentially none save what gets over there via circulation. I think I will add some rear ducting.