EDIT: The problem was bad wheel barings AND the rear brakes. The guy said the rear brakes were cutting into the rotors. So for $100 labor and $275 in parts its all fixed!
Lately I have been hearing a loud noise that sounds like its coming from the rear of the car. it gets louder the faster I go. Its not the tires because I started hearing it before I replaced them and still get it. Tonight on my way home when I stopped I heard a horrible grinding sound, which got louder the more I stepped on the brakes. The noise would stop shortly after letting up on the brakes and driving. I'm assuming this is bad rear brakes??? Could this be related to the other noise Ive been hearing? If its brakes I think I can find someone to do those cheap for me but I can't afford to keep going to the mechanic if I don't have to. Any ideas??? If you need more info just ask, Im hoping I can at least get some ideas...