[husker boxster]

How are you using your car - canyon carver / spirited driver or DE car? If a canyon carver, drilled rotors are OK. If you use it for DEs, focus on slotted only as drilled rotors will crack easier around the drilled holes due to the extra heat.

If you're doing DEs and your rotors have warped, give this tip a try. When you get done with a session, slowly drive some of the track access roads to cool your brakes, using them as little as possible. Many organizations want you off the track as fast as possible when they give you the checkered flag. It's not supposed to be a cool down lap. They want you off so they can get the next run group out. If you come blasting off the track and then immediately park your car in the paddock, your rotors will warp because your pads are still hot and they're cooking the rotor, creating hot spots, while the pads cool off. Driving a few min on the access roads will allow the pads to cool down, saving the rotors when you park. You don't have to drive fast to cool them down. I drive in 2nd gear so I can go around any corners w/o having to use my brakes. I recommend access roads and not the paddock for cool down as the paddock is busy with cars and ppl who may not see you, so you don't want to be involved in a silly incident. Safety first.

One yr I warped my rotors at COTA. I'd just exit the track and park. After replacing the rotors, I started doing the access road cool down and have never had that issue since.