[QUOTE=82benzo] at times my car vibrates a little and jumps up and down. QUOTE]

Sounds like your car is equiped with hydraulics. That would explain your desire for big rims.

Take it to the dealer and have them do an alignment and balance job. It's expensive, but I've never had another shop do it right.

Forget big rims, unless you are going for the high-schooler/wannabe rapper look.

__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E