It's very heavy with no toys in the trailer, but with 2 motorcycles and a couple bumpers in the tail end it's under the 1700 max weight for the hitch.
That first picture is as we left the inspection facility. Since then I have raised the hitch head to the top hole, gone up two links on the chain and tilted the head 2 clicks. Made a big difference, but still, I have sway.
I don't disagree that the hitch may not be properly setup yet, but at this point I've made calls to Reese, had Bob Ledford's (the dealer) look at it, gone straight a bunch of times and gotten the sway links normalized, added airbags and still have a lot of sway.
On a straight non windy road it's fine, but passing a semi, taking turns, going downhill all induce sway.
In terms of tires I think the Nittos do very well unladen. I have put a set of my buddy's BFGs on 20s on there and the truck felt like a boat in comparison with how 'loose' it felt. The Nittos feel very 'tight' in comparison. Now that was unladen. I know the Nittos are not rated to the same load as stock, but I've been careful to make sure (via a set of cat scales) that I'm not overloading the tires.