I dont think that you lowered your car, but if you did that is a common problem with mercedes if you lower your car. Your springs could be bad and saggy. How many miles does it have on it? What size wheel and tire are your running? How much do the wheels angle in?
No Benzes in the stable at the moment, but itching for one again.
Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 300E Amg Hammer 88k mi sold
1992 500E 156k mi sold