Try hitting the brakes at 70 miles an hour when some idiot pulls in front of you, I almost lost control. Severe nosedive. Did you use heavier duty rear springs or just new ones? My 450SL does the same thing and I hate it. I was thinking of doing the heavy duty Bilsteins, but I quess that's not the answer. But I'm still tempted to try them. How can my springs wear out in 74,000 miles? From the car sitting on them for 22 years? I'm used to a firmer ride and handling and need to do something. Does anyone make heavy duty springs that don't lower the car?