Front end vibration

[David Sontos <dsontos@xxxx>]

I've heard that front end vibration in the DeLoreans is common. Mine
starts around 62 MPH through 77MPH. I've replaced tires and tie rods and
had front end aligned. The whole front end seems tight. I've checked
wheel bearings there is no play. The rack and pinion seems tight when I
do a side to side check. Ball joints are unknown. How do I check for
ball joint play? The shock bushings do need replacing, although there is
no excessive play in them.

Any suggestions are welcome.