Use a CAT scale at a truck stop. They have a phone App that you can use to find them.
Pull forward so your front axle, rear axle, and trailer axles are on separate pads (trailer axles together on one pad). You'll have to use a snow brush or something to reach the button to call the attendant.
When they say you are done, pull off and go in and pay and tell them you want a reweigh.
Park and disconnect the trailer and then go reweigh the truck on the same pads the truck was on before.
When they say you are done, pull off and go in and pay and your done.
The first ticket will give you the trailer axle weight and true weight on your truck's front and rear axles. Your axles weights should be within the axle capacity.
Take the total gross weight on the first ticket, subtract the trailer axle weight and the truck weight from the second ticket, and you get pin weight.
Pin weight = GROSS - (TRAILER AXLES + TRUCK)
