I'd think about the shocks, then a wheel balance and alignment.
The roads in this area (Dubuque) the last 2 winters have been tough on us!

__________________
Phil

Prior cars:
1971 250
1983 380SEL
1986 190E2.3
1987 300TD
1994 SL500
2001 E320 4Matic
2003 SL500