ok so i was on my way home from KC(about an hour and a half drive) and when i got off the interstate, slowed down and came to a stop, it sounds like my front right brake is grinding. first i checked to see if my wheel was loose- negative; second i pumped my brakes to see if they were constantly depressed or if they were working properly - all checked fine. ARGH!! i can't figure this one out. any help or suggestions?