I don't track or mile it and I really don't brake it aggressively either. I still can't believe my fronts warped with so little mileage. I could understand rears warping if using the handbrake after a good run, but not fronts at under 5K miles on the car? The cracking I've seen in drilled rotors, have in many (but not all) cases been due to the quality of the rotor itself. I know GM uses some of the worst rotors in existence. My Z06 rotors warped in under 8k miles. My 201 GMC 2500 ate its rotors at 10k miles. My SRT10 Viper uses no cross-drilled or slotted rotors and at 18000 miles, still brakes like my bikes.
I have a set of the cross-drilled, slotted rotors from Xtreme Stop, that we sell...with specially formulated, matched pads on my 3500 Dually and as well on my 2500. They take quite a bit of abuse with the (much) larger-than-stock wheel/ tire combo on both trucks, not to mention that the Dually is over 8k LBS and is putting down 525 RWHP with 1000 RWTQ. I beat the crap of that that thing day in and day out I and stop it hard enough to make my stomach turn...and the rotors are literally perfect after 15k miles. I just had them off and fully checked again 2 days ago, as we're in the process of putting them into a major retailer and I want to be absolutely sure we're not going to run into returns and defectives. They're Canadian made from high quality steel and are far superior to any OEM application they replace. I know a lot of products out there are manufactured overseas and have inherent issues with quality. My stock GT OE rotors gave out at just around 4k miles with some serious warping...and they are supposed to be a high quality disc...go figger.
