Plz Help w/ some weights

Part time under somebody’s number pulling their trailer their insurance to make extra money. NO RISK

 

15-25% of the trailer weight transfers to the truck.
DOT doesn't really know your axle rating so they rely mostly on tire rating. I upgraded my wheels to 19.5" so I get 16 ply tires on the truck. My tire ratings are way over what my truck can carry.
Ram 3500 single rear axle has a rating of 7,000 lbs. Truck with no trailer already has about 2,700-3000 lbs on the rear axle. Your pin weight can't be over 4,000. 4,000 lb Pin weight means your trailer is loaded and weighs 16,000 - 20,000 lbs depending on load placement.
Assuming your trailer weighs 7,000 lbs or so, if you load over 13,000 lbs load you will exceed your pin weight and your rear axle will be overloaded.

For a dually, the rear axle is 9,750 rear axle rating and already weighs 3000+ and gives you a pin weight of 6,500 you can play with.

Don't forget, a gallon of diesel is roughly 7 lbs. 60 gallons of Diesel is 420 lbs and will mostly sit on the rear axle. Straps, tarps and chains weigh more than most think. Add tools, yourself and kit and your rear axle has 4,000 lbs on it rather than 3,000.

Once your truck is ready and loaded with everything minus the trailer jump on a scale and we can do more accurate math. Also, I am always over 30,000 lb loaded and the truck does just fine, I'm normally between 33k-36k lbs. Ram's gcvwr is a recommendation and the DOT doesn't follow it.

Hope this helps.

 

That is correct the lowest number is the most important one. In addition the trailer people are able to sell their trailers rated with the weight transferred onto the tongue. For example a trailer with two 7,000 lb axles is rated at 15,000 plus due to the weight transferred to the truck. So you need to look at each axle and look at the total weight.