My 1985 500SEC (206,000) has developed an unusual brake problem. When the brakes are cool, especially in cold weather, they stop as smooth as silk. Once they become warm, they want to surge, just like a warped rotor. Can not feel it in the pedal, but sure can in the body. Any thoughts? If the bad rotor is only warping with temperature, then having them turned will not fix the problem. Suggestions??
(Anybody know who grinds rotors instead of simply turning them?)