Slate CM wrote:
:h
Hmmm, so what you're saying is that payload does not take into account the passengers and hitch and those must be subtracted.
Those items only affect the tow rating? If so that would only be 370# total, not much of a difference in trailer weight.
I have read several articles that manufacturers were reluctant to adopt a standard for fear their tow ratings would be less. But it wouldn't be much.
Maybe there is more to it. After all, it was on the internet....
The maximum amount you can tow will include various things, different per vehicle manufacturer usually. My Acura included a 150# passenger and an 150# driver, and 40# of cargo for each of those people I think it was. Some vehicles account for just a 150# driver. You mentioned Toyota accounts for some people and some weight for a WDH. Anything above and beyond what the manufacturer accounts for in the tow rating, basically means that you can no longer tow the maximum that they advertise as the tow rating.
The payload is separate from that. They weigh the vehicle sometime prior to it getting shipped out with all factory options on it and full fluids (oil, washer fluid, gas, etc.) and they then subtract that off the GVWR and slap a sticker that indicates that number. That number is how much you can add in dealer options, aftermarket accessories, cargo, people, tongue weight, WDH, basically anything on the truck that didn't come from the factory.
As for the 370 number you gave, sorry, I'm not sure which numbers you were using to calculate that so I can't confirm for you if the math is correct there.