I am running that size in the Toyo AT-II's on stock rims with no level. The only rubbing is the radius arm, and that is not due to or cured by a level. It is due to the extra width of the tire with the factory rim and its offset.

 

here ya go. I'm not saying it's smart, I'm not saying it's a good idea' I'm not saying it's a comfortable drive but it will work OK. Rear axle tire ratings must exceed weight on them measured at scale and air bags will keep you level. I did this for a year with zero problems. If I had been younger I might still be doing it.

 

So since I started this thread I thought I would post my final numbers. I finallygot mine weighted after loading with all the camping stuff and my 2015 900 RZR(1,100 lbs) in the garage.

Truck Specs
2016 F350 SRW 4x4 Crew Cab Lariat 156" WB Styleside 6.7LDiesel with Firestone Air Bags and exhaust brake
GVWR 11,500 lb
Front GAWR 6,000 lb
Rear GAWR 7,000 lb
GCWR 23,500 lb (according to manual)

Camper Specs
2016 Keystone Impact 361
Hitch Weight 3,115 lb
Dry Weight 12,820 lb
Cargo Weight 4,1820 lb

First weigh with just truck (with full tank of gas and me in cab)
Steer Axle 4,900 lb
Drive Axle 3,560 lb
Gross Weight 8,460 lb

Second Weigh (Truck and unloaded camper)
Steer Axle 5,000 lb
Drive Axle 6,600 lb
Trailer Axle 9,660 lb
Gross Weight 21,210 lb

Third Weigh (Truck with loaded camper and RZR is garage)
Steer Axle 4,800 lb
Drive Axle 6,600 lb
Trailer Axle 12,300 lb
Gross Weight 23,760 lb

So if my calculations are correct....
Truck GVWR is 11,500. Actual GVW 11,440 lb (4,800 + 6,600)
Pin Weight 3,040 (6,600 - 3,560)
Truck Rear GAWR 7,000. Actual 6,600
Truck GCWR 23,500. Actual 23,760 (a little over)

 

Looks perfect to me! Glad it all worked out within reason Bob....

Amazing the rear axle didn't budge with the garage loaded.

 

the areas that count are the tire rating and the axle ratings and perhaps your registration.


You are good to go.