From pickuptrucks.com's buyers guide for the 2002 3500, I see this:
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Both the Vortec 8100 and Duramax 6600 Diesel V8 permit towing trailers up to 12,000 pounds; they provide a maximum 22,000-pound gross combined weight rating (GCWR).
With a fifth wheel or gooseneck hitch, trailering capability increases to an astounding 15,800-pound maximum.
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That would seem to indicate that the GCWR would be 25,800 pounds with a GN, just shy of CDL territory.
So my tractor loaded would be about:
8500 tractor
400 wheel weights
200 larger wheels tires
2000 FEL
1000 grapple
12100 total
My Bush Hog 3209 would add another 2600 lbs or so, for a total of 14,700. And the weight of the trailer itself is 4,800, for a grand total of 19,500 plus the truck which is 8,100, making the whole thing come in at 27,600.
Hmm, that takes me over by quite a bit. I was planning on hauling the above combo about 3 miles down the back road about once a month to maintain about 30 acres.
Perhaps I should just drive the tractor there directly? It would be quicker than loading/unloading the tractor, but I'm worried about tire wear being that its all black top.