Payload question

[Babe]

I just took delivery of a new 2020 Sierra 2500 SLT.  It has the following trailer towing ratings on the sticker inside the drivers door.  Conventional Trailer= 14,500lbs, Max Tongue Weight= 1,450lbs,

Gooseneck Trailer= 16,620lbs, Max Tongue Weight= 2,490lbs.  On the other sticker it states that the Max Payload for my specific vehicle is 3,248lbs.  My understanding was that the "Max Payload" was all the cargo loaded on the truck (passengers, fuel, etc) plus the pin weight of the fifth wheel.  So if I have 500 lbs of "stuff" on the truck, I would subtract that from the max payload and the result would be my available payload for the pin weight would be (3,248-500)=2,78lbs.  Is this correct?  If so, what does the Max Tongue Weight, listed directly below the Goosenect Trailer, state 2,490 lbs?  Wouldn't the gooseneck  tongue weight rating and pin weight for the fifth wheel be the same?

[MShultz]

That's a great question. Because I always thought max tongue weight comes from GVWR (10000 lbs) subtract curb weight of vehicle (7148) equals 2852 lbs which is max payload.  My sticker says 2490 lbs max gooseneck. I think they are taking 10% from front axle rating and subtracting from max payload. Just a thought.

[buckwuk]

I believe they list it that was so you dont go over on your rear axle. Each axle also has a weight limit. Say you put a #3000 lbs pin weight in your truck technically you have 248 left of payload but if you go to a scale your rear axle will be overloaded.

[MTU Alum]

Payload is the GVW minus the base curb of the vehicle.

 

The trailering label is determined by the SAE standard.  There are several performance tests you meet plus the vehicle capabilities.

 

For trucks over 8600 lbs gvw, the trailering calculation is base curb + 300 lbs for passengers + 100 lbs cargo + hitch weight + pin/tongue load (10% conventional, 15% GN).  Then you have to meet GVW, RGAWR, and GCW.  Which every one limits you, determines GN max towing.  This is usually either GCW or GVW.  Conventional trailering is usually limited by sway and/or understeer handling tests.  

 

#iworkforGM 

[Carolina]

I’m looking a heartland fuel 352. Dry weight 12,815. Gvwr 17,000. But it has hitch weight listed at 3060. I assume fully loaded. I don’t plan on hitting 17,000 . My 3 atvs are only about 2200 combined so around 15,500 with gear. Wonder why it has the hitch weight so high?

[redwngr]

The load the vehicle is rated for is limited by whatever of the rating numbers is reached first.

 

It's not likely going that they can all be maxed out at the same time.

[dbunke]

When looking at RV dry weights in a brochure they list them with no water and no cargo and no options such as a generator.  If you look at an RV in person it will have a Mfg weight on it and it will be different than the brochure. They did on mine include a Full load of propane and generator fuel in the Mfg weight. In my case that would equal 40 gals in the toy hauler tank. I just bought a new Talon and its mfg listed weights are 11,780  total  and 2340 for the pin. I took it immediately to a cat scale to see what it really weighed. Trailer weighed in at 11,540 total with a Pin weight of 2440. Mine has the added generator in the front compartment that added Pin weight. No fuel in the 40 gal tank subtracted from the total weight.  From what I have heard is they make the Toyhauler Pin weights heavy so when pulling loaded in the rear there is enough weight to keep the back end from waggling. I have not weight mine with the toys in it yet but with weight in the back it could take a little off the PIN as counter weight?

 

Over the years I don't worry so much about cargo or GVW ratings. I worry about Axle weight ratings and tire ratings.