I have a weird metallic clunking sound coming from under my car when i drive over any imperfection in the road. it comes from which ever side it hits and is pretty loud. I really notice it in the parking garage where there are joints in the cement. any ideals!!!!

 

Are you sure its the brakes and not the exhaust bouncing.....

 

ive taken my wheels off and when i move my calipers they make the same sort of noise, but also when i start my car at a certain point every time i hear a exhaust like rattle only for a second, and ive heard the same rattle/vibration when i open the car up! thanks