My rear rotors in particular are pitch black besides needing to be changed only after a few thousand miles since the last cut. And thats driving very conservative. When I last chabged them it was very hard to turn the pistons back in. I cant see how they actucally can retract on their own. They arent actually dragging as I can still turn the wheel freely or smoking but I guess its enough still. Just curious if anyone else has similar issues at this point in time? My 04 had the same issues. Im looking at getting new calipers this time around.