Steering wheel shimmy at highway speeds

[SuffolkD at aol.com]

Over the past month or two I've noticed a shimmy in my steering wheel
> when I hit 55 and above.

Lug bolt loose.
Your 90 have sub frame bushings like the 4000 & 4000Q, they could be worn out.

bad tire (chord)

good luck 
-Scott by BOSTON