I'm not going to a 3500, and the FW size we'd need to be within payload limits is way to small for our needs.
Guess we'll scrap the FW idea and look for a TT replacement instead. Am I missing something here? I can't believe how many large FW's I see pulled by 250/2500 trucks.
If I'm wrong somewhere in my calculations please let me know. Thanks.
First off trucks out here on the road have never carried weight determined by the mfg GVWR or a payload rating. This is something that newer RV owners have pushed the last 10-15 years. LDT/MDT/HDT have been on the roads working/playing since ......... well longer than any of us are old. They simple carry weight up to the trucks drive or steer axles or a registered weight if your state requires it. Many states don't.
Your trucks drive axle has a 6000 RAWR and weighs 2940 which leaves you with a 3060 lbs for a max payload.
Some folks talk about the trucks brakes being = to GVWR. Its not the case. Trucks brakes = the sum of the vehicles axle ratings. Same as the trailers brakes = its axle ratings.
As others have mentioned the 3500 SRW has higher rated tires/wheels/rear main spring pack. All else is the same.
Anyhow thats why you see lots of 3/4 ton trucks towing large trailer. Its legal as long as their not over a registered weight or the vehicle drive or steer axle/tire load ratings.