SRW Dodge with Northstar as described in sig. Real world weights as shown below. Mods include higher LI tires on stock steel wheels, 9000XL, Helwig, and custom made spring perches to engage overloads sooner. The combo handles great!
1) Truck only, full tank diesel, no tailgate, no passengers:
front = 4,540
rear = 2,960
total = 7,500
2) Truck only, full tank, 1 driver, tools & gear just before purchase:
front = 4,920
rear = 3,340
total = 8,160
3) Camper on after picking it up on purchase with: full tank diesel, dry camper except for 2 full LP tanks, some gear (tools & wood for camper bulkhead blocking):
front = 4,860
rear = 5,940
total = 10,800
4) Camper on, full tank diesel, fully loaded and wet, full cassette reservoir, generator, gasoline food, beer, gear, guns, ammo for a week out:
front = 4,980
rear = 6,540
total = 11,520
Conclusions:
COG on this particular camper dry is probably closer to the center line of axle depending on cargo. My only "pseudo dry weighing" was weighing #3: with some gear that I brought to assembly the blocking in between the truck and camper. Both LP tanks were full and they are located at the rear of the TC affecting COG weights of a "half-wet" camper. COG per mfgr. is about 3" forward of the axle WITH full water which I did not have on this scale measure.
Real world camping out- to- the- woods camping weight is reflecting in weighing #4. Some weight will transfer over time as the forward mount fresh water tank gets used and gets deposited to the gray tank in the rear.
If my camper were any heavier or I did not go off-road as much as I do I would be considering more the idea of 19. 5's... but my setup handles the load pretty well... I was a little surprised at the CAT slips and what kind of weight I am carrying once it is all loaded up.
The stock wheels/ tires will be the weakest point using a truck camper.
If stock Dodge wheels are matched to factory offered tires using LI= 121 (3195 each) then it gives me a rear tire capacity of 6390#... My numbers above are 150# over for 2 tires. If I divide that by 2 then each wheel is carrying 75# over the known rated capacity of the wheel based on tires alone. My new tires are the Nitto TG's 285/70/17 which give me enough weight carrying capacity for the tires.
I feel realistically that asking the wheels to carry another 75# is not too far over expectations. I can live with this. Do your own due diligence for your needs, but this analysis as it pertains to me may help in your decision making.