Tires seem to have a bigger effect than shocks as far as crosswind stability
and "the bus dance".  If yours is bad, adjust your side mirror to see the
rear tire. Then zig zag a little while driving and glance in the mirror and
watch how much your sidewalls flex.  Better tires don't do that nearly as
much.  I will stop this response right there to avoid starting a dreaded
"tire thread".  I have driven Bilsteins, KYBS, Boges, and Monroes.  I think
the Boges ride the best, but Bilsteins handle better.

John
Vanaru.com