Originally Posted by RaptorTaxman
"I think the attorneys at Ford trumped the engineers and told them to reduce the ratings for liability purposes."
Thank you for your reply and your concerted effort to make this a safe rig for your family. In doing so you emphasize my point regarding the potential litigious environment one may find themselves if in an accident having to prepare a defense for exceeding manufactured engineered design tolerances, and the potential unknown adverse impacts caused by making modifications to exceed them. Using a "dead reckoning" navigational approach instead of system engineering approach may get one into uncharted waters.
Engineered towing configurations address the tested "end to end" components involved and thus given a "system" load weight rating similar to a chain if you will. The component ratings i.e., GVW, GVWR, CGVW, weight loads/distribution, wind loads, etc. are pieces of the system engineering puzzle. The hard part when setting up for towing is making all this work together as a system by not over stressing any one component.
I don't mean to rant, all I am saying is be careful in your assessment that only the suspension is the "weak link". Anticipate/expect there are other weakness in this system and what is your risk tolerance for experiencing them and when.
Example rough numbers,
My TT is similar to yours @5350 lbs dry + 500 lbs cargo, (I travel light as well) tongue wt 720 lbs (best towing when 10-12% of TT wt)
My E350, GVWR 9500 lbs, GVW 5889 lbs, P/L 3611 lbs. - 500 lbs cargo = 3000 lbs
reserve capacity for hitch loading, tow braking/handling, etc.
RaptorSC, GVWR 7450 lbs, GVW 6210 lbs, P/L 1170 lbs - 500 lbs cargo = 670 lbs reserve capacity for hitch loading, braking and handling.
Note: Any modification to the suspension only, creates an unknown impact to the overall system tow capacity, braking/handling, etc. "Towing safely is more than the desire and having the vehicle with guts to pull a load."
Having a Hummer previously, I dig your truck and 4x4 thing, and considered the Raptor myself but it was not going to work for me.
I wish you the best.