Quote:
Originally Posted by gspman
the interesting thing to note here is that the sum of the GAWR FRT (4860) and the GAWR RR (6084) posted on the door sticker already exceed the posted GVWR (9200)
How's that work?
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The way Ford explains it in their SuperDuty Owner's Manual is this:
The front and rear axle maximum load (FAWR and RAWR) are greater than the GVW to allow for loading variability while maintaining sufficient axle loading of the vehicle. If the passenger loading requires loading to the GVW, the front axle will carry more of the load while if the cargo bed loading is required, the rear axle will carry more of the load. There is "sufficient axle capacity" to load either the front axle or the rear axle to carry nearly any load at any position on the vehicle, up to the GVW without overloading either axle.
As an example: Imagine you're towing a fifth wheel (loading the rear axle) up to the GVWR. You can't also add a snow plow (loading up the front axle) because it would exceed the GVWR. You can unhitch the fifth wheel and install a snow plow on the front of the truck "up to the axle/GVW ratings. You can do "one or the other but not both". Doing so would violate the GVWR, probably overloading the main frame or some other components on the truck that are limited to a maximum allow by the GVWR.