The other day I noticed that my right rear brake was making a grinding noise. I decided to put the car on jack stands and to figure out what exactly was making the noise. I notice there was also a slight noise coming from the left side as well at this point. At first I thought I had warped the rotor because I have taken the car autocrossing acouple of times and the drag strip acouple of times within the last couple months. I took the rotors off and they seem fine. I ran the car in gear and the axel was still wobbling with the rotors and calipers off. I opened the rear diff. to examine the gears and everything checked out in there. It doesnt make a grinding noise like a wheel bearing so I dont know what to atribute the wobble too. Is it possible I bent the axel at the track? and what are the chances I bent both? any info would be helpful, thanks guys.