Worn out rubber in the suspension in extreme cases can cause vibrations and tires to actually go out of balance and go out of alignment. (BT, DT & only the dealer shop foreman correctly diagnosed it) REAR TOE is critical in the steering of the car. Are your rear tires wearing at all, say on the inside?? Do you feel vibration in the seats? On the older cars, wheel bearing preload is very important as well. In rare cases, the hub/knuckle can also contribute to vibrations. In my area, the DEALER is the only one I've found that can do the alignment correct.

Happy New Year!

__________________
Brian Toscano