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Message:: [QUOTE="Kshaw0960, post: 12289723, member: 218754"]What you describe is normal. When the air is depleted and the bags deflate, your truck doesn’t lower in a perfectly straight up and down line. Think of it more like a triangle (I’m being grossly over exaggerated to explain the point) where one of the 3 sides is your air bags. As it deflates your truck lowers at an angle which causes the truck to move a bit. Think if it like the airbags on the back of your sleeper. When they deflate your sleeper moves back while the pivot is in the front. The entire sleeper doesn’t lower, just the back. Signs of bad bushings are tire shoulder wears in steers, irregular tire wear, lose alignment rapidly, and if really bad can hear almost like a pop as it moves on the front axle during hard slow speed turns. It also depends on the suspension. I remember stoughton trailers would move like 6” from the dock and I was always frustrated. Wabash actually has 2 arms that come down and keep the trailer from creeping or lowering to prevent this. Other suspensions and trailer manufacturers have their own designs (most use the same couple types of suspension such as Hendrickson).[/QUOTE]