I believe that in most case the factory engineering is the best. So any deviation from that, (lowering the car) will cause you problems that can be fixed at a cost. But enthisiasts will always try to improve on the factory engineering, which can get expensive on a Mercedes-Benz. You will need a camber kit and even some modifications to the front to correct bump steer.

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1990 190E 2.6
1996 Grand Voyager 3.3
1985 Mustang GT 5.0 5 SPD
1982 Suzuki GS 750T