Originally Posted by ffmd212
I have an EZ lift sway control bar that came with the trailer. My tow vehicle is a Suburban 1500.
Check your anti-sway bar setting agains. You may have to tighten up the friction device somewhat more if possible.
When I was towing with a 1/2T van the rear tires were not all that well suited for the weight I was hauling (28 foot trailer) and I would get tire instability that caused a little squashing but not too much since I was using a Pullrite. Check your air pressures and perhaps bring your tires up to the max inflation pressure cold.
Sway will start where the rubber meets the road and works through the tow gear on the trailer.