my brakes started squeaking in the fall and i decided to try to wait till the spring to fix it since i was at school. eventually the squeaking got worse and it became a grinding sound coming from the rear passenger wheel. i've also noticed a lot of rust on the rim on the wheel that grinds. i figured i would have to replace the pads and rotors but today when i was driving it something happened and the sound totally stopped. it almost felt like the brakes locked up. even at very slow speeds (5mph) my car would squeal its tires to stop. i went home as soon as i could and checked out the wheel and noticed it was very hot and smelled like something burning. i guess my question is what else can get messed up besides the rotors from brake wear and tear? and is my car safe to drive somewhere to get it fixed?