TomG2 wrote:
Simply install bigger rear tires and disregard the rest of the vehicle if you are going to ignore the GVWR like some have suggested. Add a couple of leaves to the rear springs while you are at it. Ford has no idea what "Should never exceed" really means. It is "just a guideline".
I don't think anyone is saying that Ford or any manufacturer has no idea what "Should never exceed" really means. However, what influences those "Should never exceed" ratings is a different story. It could be the actual limitation of the truck, EPA/USDOT regulation limitations, or even just to save save customers money.
I have already covered the EPA/USDOT regulation limitation on most 250/2500 trucks earlier in this thread so I will just comment on how they would decrease GVWR just to save the customer money and will use the SRW F350 that has different GVWR options as an example. You can option a SRW F350 to have a lower GVWR even if it is the same exact truck as higher GVWR rated F350.
Why do they do this? Mainly to save fleet customers money on registration, licence requirements and insurance. It has nothing to do with safety or actual vehicle limitation. This also happens a lot in the medium and heavy duty world. Since each class has it's own regulations, some customers opt to have the factory GVWR of their class 8 truck lowered to a class 7 GVWR so save on taxes, registration fees and such. These types of customers generally use more than the GVWR off road, but are less than their GVWR on road.
Then there is the F450 which goes from a class 4 to a class 3 truck by Ford lowering its GVWR just so they can put it in the same class as a Ram 3500 and say it is "class leading" in comparison. So you see, there are those that follow every rating of a truck to a T, while others know better and what really influences the GVWR rating on their truck opting to use their GAWR long with other things to judge what the truck can actually safely handle.
Also, most of these GVWR's are in fact "just a guideline" since they cannot be enforced legally.