Sticker loads are for the lawyers, give or take a few hundred pounds.
Upper stableloads, and lower stableloads are your friend.
On my F250 with a 3000 lbs camper, I switched from LT275/70R18 tires to a tire with shorter sidewall, same weight capacity at LT285/65R18.
Shorter sidewall equals less flex, less sway.
With the Upper and Lower stableloads, and the truck camper package, it's the way to go.
If you're under tire ratings for the rear axle, you are fine. That axle is good to 9600 lbs. I would not go anywhere near that on an SRW though, very few tires add up to that (if any).
