A buddy was in my 4Runner last week while we were on the freeway and commented that my truck seemed to have a rear end 'wag' as we were traveling. I guess I had never noticed it since I drive it every day. After he mentioned it I started noticing it a lot at freeway speeds. When I would go over a rise or something, the rear end would sway side to side (or wag the butt) Almost feels like a shock maybe shot (would have to pull them out to test I suppose) Anyone have similar experience with this? I have the Bilsteins installed with abt 80k on them. Do they have a warranty? If they are indeed shot and the cause of this problem, any recommendations on what I should replace them with? Same? Better options? best bang for the buck? Thanks!