a couple days ago i started noticing a kind of grinding or clicking noise coming from the back part of my car when i slow down and stop. and the faster i stop the louder and more noticable the sound is. i had my step dad stay outside to see if he could hear it when i stop and he said he could. i had a couple of my friends in the car and they told me what it was but i cant really remember and i wouldnt know how to fix it. so if any body knows what it is and how much it might cost to fix it please tell me. thanx.