sounds like un even wear on the rotors and pads, when you hit the brakes it will pull to the left mainly or the right slightly. way to tell is to put it up on a lift or jack it up and remove on wheel from the front and check out the rotor.
A forum community dedicated to Ford Mustang owners and enthusiasts. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more!