I have read that in terms of noise and vibration that MB brakes are real fussy on what kind of pads are used, and that the rotors are supposed to be replaced, rather than turned. Could your car have non MB approved pads or have had the rotors turned in the past? I will defer the techs - they will know more about brakes than I do.
87 300E, 65k miles
[This message has been edited by JCE (edited 10-10-2000).]