For instance, when you look at the forest river salem hemisphere 263rl travel trailer it has a GVWR of 9,443 which is way over the quoted 3,600 that we calculated.
However this model only has a hitch weight of 643 lbs.
So going back to my payload numbers
1,375 minus 107 (dealer add on) minus 100 (weight distribution hitch) = 1,168 minus 643 (rv weight hitch) = 525.
This means I have 525 pounds left in payload. So, im 280 pounds once you subtract me out that leaves me with 245 pounds. Basically I could have one more person riding with me and small amounts of cargo and that’s it (I can have other folks follow me in a separate vehicle if need be)
So…according to the above calculations I could have myself + one person in the car with me and still be able to safely tow the salem hemisphere 263rl with a GVWR of 9,443
However, if we used your calculations then this would mean I could only tow this…
1,375 pounds minus 107 (dealer add on) minus 100 (weight distribution hitch) minus 525 pounds (weight of myself and one other passenger) = 643 pounds this is the weight of the hitch of that travel trailer.
However, based on how your formula is created I need to do 643 pounds / 0.13 = 4,946 pounds
So, on your formula I can only tow 4,946 pounds of GVWR of a travel trailer.
However, based on the numbers I can to the salem 263rl with a GVWR of 9,443
What am I missing?
For towing my understanding is you must stay under the payload and you must stay under the tow rating.