I'm not doing anything different with the GXP then i'm doing with any of my other cars regarding the brakes.
At 40K miles, the rear left went from 1 squeak to grinding the rotor in 1 day. Those got replaced by GM with just a purchase of rear pads. I changed the fronts to Hawks HPS about 1K miles later.
Now at just under 50K miles, all 4 rotors are grooved, the crossdrills keep getting filled, they always have rust on them, and the rear left just started squeaking again.
About the only good thing about these GM rotors is that they're not warped.
I didn't see any GXP rotors listed at the ZZP site. You'd think these things were made of gold with some of the prices that i've found.
