Just bought a 87 300E with a prounced vibration thru the steering wheel at 60MPH, then the car seems to float on the highway at this speed, I was going to swap wheels with my 86 300E to check for tire/rim out of roundness, the car was just aligned, the steering strut was changed a year ago, how can I check the effectivness of the struts and shocks ? and is there anything else I missed to check ?

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Jerry

2004 SL500 Black 55K Miles
2002 s500 Black 90K Miles
1986 300E Gold 233K Miles
1966 Twin Cessna 320D
1989 Jeep Cherokee 233K Miles
1994 Ford Van E150 399K Miles