If you're towing with a Ram 1500 consider replacing your rear sway bar with the Hellwig. It really tightened up the rear end of the truck. Definitely wanders a lot less while towing. Cheap upgrade at $200 for results you can feel. Comparing the stock versus the Hellwig it was like going from a thin wire to a beefy component.
Just thought I'd pass this along. Maybe some other Ram owners can benefit.
Hellwig Rear Swaybar 09-16 Ram 1500