Forum Discussion

harmanrk's avatar
harmanrk
Explorer
May 16, 2013

Payload vs Tow rating?

Okay, I'm new, so be gentle.

I see a lot of posts discussing the payload of the truck to be used as a tow vehicle, but very few discussing the tow ratings, so I have to ask, why?

I realize that the payload is the weight you can put in/on the tow vehicle, beyond the curb weigh, but am I missing something in how that comes into play? Passengers, cargo in the cab or bed, Hitch Weight/ Pin Weight you want to keep the total below the payload. I do realize that four people at 150 each (Some of us are above that, but the kids tend to be lighter) is 600, another 600 in tounge weight is not beyond reason, bringing you to 1200, before cargo. 1500 pound payload leaves just 300 for gear, if you max out the tow vehicle, but is that the extent of it?

26 Replies

  • Yes, you got the picture. A lot of trucks run out of payload way before they reach the tow rating. In your example the trailer would be around 5000lbs assuming an optimum tongue weight of 12-13%. The trucks tow rating might be twice that.
  • Ron3rd's avatar
    Ron3rd
    Explorer III
    Your towing rating is limited by payload and gross rear axle rating among other things.
  • The reason you see payload/GVWR/Axle ratings discussed so often is unexperienced people tend to look at only tow rating and believe that is what the truck should be able to pull. In reality tow rating is the maximum a truck can pull with a theorical trailer. TT and FW with thier associated on the heavy side tongue wieghts and large wind resistance aren't even close to that theorical trailer

    Unless you are talking about a dually then payload/GVWR/Axle ratings will always be the limiting factor for a TT or FW. If you stay within those load limits you can't even get close to tow ratings with anything except a dually, other trucks simply can't carry the load that a maximum tow rating would require.
  • IMHO: Never exceed your TV's payload. It is very easy to do, especially with a half ton. Second, never exceed your RAGW as exceeding either is asking for trouble. Chances are you will not be able to reach your TV 's rated tow capacity without exceeding payload or RAGW. as to GCWR... not so much. :C
  • First,,, welcome to the forum...Our rv has a 4000 lb. pin weight. The truck has over 5000 max carry capacity. I did add airbags and that really helps with stability. We have 15,000 lbs on the campers 3 axles. You do have to add all the people and extra gear to the equation. We tipped the scales at 27540 lbs.
  • Because of the design of a fifth wheel, it carries very much weight over the trucks axle. That is called pin weight. Large fifth wheels can have more than 3,500 pounds of pin weight.

    So that is why payload capacity is discussed so much. The towing weight is usually quite easy to determine. Payload capacity needs to be compared to a lot of different components, as you mentioned.