Hey all, I bought my c with about 5000 miles on it, and for some reason the front brakes make like a crunching sound when ever the car stops. It does it about 80% of the time. The dealer says everthing is ok, the one dealer said I got tire spray on the rotor and thats why. He said to use the brakes hard and it will go away. So I did and still doing it, and its really loud when it does it. Anyone have this falult, and can anyone help me out. Also does the C have ceramic front pads?