My trailer is 36'5" bumper to tongue and weighs close to 10,000 lbs. pulled behind a 2500 Ram. I don't get sway but do feel passing large vehicles. That is just the way a TT Is. It's nowhere near a nuisance or uncontrollable, just something I can feel. Your springs bars might be a little light too. Stronger bars should take more weight off the rear and send it to the steering wheels. Stable Loads are a small investment and can help stiffen the rear end and reduce proposing a great deal. Good shocks will stabilize it a lot. Best answer, more truck
