Currently the hot ticket is the Toyo AT2
I much prefer narrower tires for foul weather travel, so I stick to the metric version of Toyos 35", that comes in at roughly 11" wide.
Load E Toyo AT2 285/75R18 (34.8 x 11.2) that carry a 4080lb per tire load rating
Narrower also helps fitment as I refuse to lift a truck, especially one that is to haul heavy.
The 285/75R18 fits without any modification on the super duty, and does not rub at all.
Wheels are rated at 3700lbs as I recall, but with this combo the tires will allow me to run a considerable lower pressures anyhow, based upon my projected weight (with flatbed and camper)
At the very heaviest projected wet weight (12k), each corner would be seeing just 3000lbs
3000lbs on these toyos equates to just 50 PSI
For added safety Ill probably run closer to 60 PSI at such weight. 60 PSI places the load capacity at 3340lbs per tire, that would be good for more than 13,000lbs