Originally Posted by puckdad
Considering the unit has a dry weight of 6410lbs, am I thinking correctly that these tires will only allow me about 600lbs of payload before I'm over their max ratings? Not to mention that they come nowhere close to be able to handle the trailer's GVWR of 11,140lbs.
Mike, I know it sounds counter intuitive, but there is plenty of capacity in those tires. Remember that not all the weight is carried by the tires alone.
In a 5th wheel 20-25% of the GVWR is carried by the King Pin and the rest divided by the 4 tires.
In a TT, the tongue weight is supposed to be 10-20% of the camper's GVWR for sway control and stability. The balance is carried by the tires.
New Travel Trailer for sale | 2012 Forest River Salem LE 26TBUD Bunk House | Beilstein Camper Sales | RV Sales Missouri - RVUSA.com
It looks like your numbers might be off if this is your camper.
dry weight 5075 and GVWR is 5880 with a payload of 805 pounds.
If you loaded the 805 pounds in your TT, the minimum tongue weight carried by the truck would be 588 pounds and the maximum safe would be 1176 pounds. Optimum (15%) would be 882 pounds.
5880 minus the 882 = to be 4998 carried by the 4 tires.
4998 divided by 4 = 1249.5 pounds per tire; well under the 1760 rating.
Even at the minimum 10% loading you would have 1343 pounds on each tire.
Additionally, Towmaster does not make a 205/75D14 tire, I think you meant 205/75R
14. TowMaster Radial Trailer Tire 14 and 15 inch
I could not find the inflation sheet for Towmaster, but here is the inflation sheet for Maxxis Tires:
At 50 PSI a Load Range C Maxxis tire will support 1760 pounds like your Towmaster.
Was that helpful?