Forum Discussion
BeerBrewer
Jan 18, 2019Explorer
Walaby wrote:
Beer Brewer
It's not hard to understand. J2807 is a testing standard for determining tow vehicle GCWR and Trailer Weight rating. It is NOT a methodology for determining payload!. It tests to max payload capacity, and uses the items you describe (and others) to determine tow rating, but that does NOT change the payload of a vehicle.
You cannot say because the J2807 standard tests with 300 lbs of passenger and 100 lbs of tow equipment, that the payload of a vehicle magically is increased by 400 lbs.
In fact, the word payload doesn't even appear anywhere in the doc you referenced.
Mike
Mike...All I'm saying is when the SAE runs a pick-up through their tests, they do so with a 150 lb driver, 150 passenger and 100 lbs of misc weight in the truck. So there is no need to add these weights again. Ram has the following statement on all of their Trailer Towing charts to inform the readers how the trucks were tested, so if they are carrying more driver and passenger weight or cargo, then stated that they need to factor the additional weight in.
7. Trailer Weight Rating and Tow Vehicle Trailering Weight are calculated as specified in SAE J2807.
Passenger Weight = 300 lb
Options Weight = 100 lb
Tongue weight: 10 percent of the gross trailer weight for Conventional Hitch, 15 percent of the gross trailer weight for 5th Wheel or Gooseneck hitch.
Trailering Equipment Weight: 75 lb for Conventional Hitch, 70 lb for Gooseneck and 250 lb for 5th Wheel.
Payload and GAWR should never be exceeded and must account for all of the above weights, including the appropriate trailering equipment and tongue weight.
Box Off Body Completion Weight = 80 lb per foot from end of cab to end of frame.
I didn't mean to get into a long debate or get anyone upset over this. Lastly I also agree with you that it probably isn't smart getting so close to a trucks capacity that you need to worry about a couple hundred pounds. For instance I was seriously considering purchasing a new 2019 RAM 1500 to pull a 8000 lb trailer. It's a real nice truck but I when started running the numbers I could see myself betting getting real close to max payload of the truck even though I was below what the spec says it can tow. It was just too close for comfort, so I've decided to bite the bullet and purchase a 2018 RAM 2500. My only decision left was between a gas or diesel engine...I am leaning towards the diesel.
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