We recently purchased the Rockwood Mini Lite - I believe it weighs around 4500 pounds? We have a 2011 Chevy Express passenger van - 1 ton. It tows our boat with no problems.
We noticed 2 things while towing the trailer:
1 - Gas mileage was awful! We haven't actually tracked what we were getting yet, but we watched the gas gauge going down fast!
2 - the towing is a bit jerky.
I am wondering if something needs to be adjusted - we have the sway bar and weight distribution hitch on there. My husband is more technically inclined, but I think those are the main pieces on the trailer hitch - I know that the 2 bars that go on each side of the hitch have a chain that is adjustable - the dealer told us to use the 3 loop hanging rule?
We had noticed jerky braking at first, but that was easily adjusted with the interior brake setting, so it's not the braking that is jerky - it's the ride - especially when we go over small bumps in the road.