We just got a 2012 Ford F250 diesel crew cab short bed. Then bought a 2012 Montana 3150 RL. With a pull rite sliding hitch. Husband wants to add extra fuel tanks. When we tried to calculate the weight measurements to see if we could add the tanks, we find that our king pin weight is more than the rated payload. The Montana Gross weight (shipping weight + carry weight) is 14,160 lbs. hitch weight 2160 lbs. the truck GVWR is 10,000 lbs. the cargo weight is not suppose to exceed 1,661 lbs. We see lots of F250s towing Montana and similar size 5ers. What are we doing wrong trying to figure out the weights??
Thank you.
