Tongue Weight Rating
Hello, We are buying a trailer for our daughter and son-in-law. They now have a Ford Expedition with 8,900# tow rating. 80% of that is 7,120#, but they should stay below 7,000# loaded (5,500 to 6...
Forum Discussion
Seattle Lion wrote:I believe the TW rating for "weight-carrying" is 10% of the Maximum Trailer Weight as well.
The Ford towing guide shows two hitch weight ratings: with and without WDH. The rating with the WDH is exactly 10% of towing capacity for the 2014 trucks. I suspect that Ford calculates the max hitch load based on the vehicle's suspension, etc., and then multiplies by 10 to get the max tow weight.
If a tow vehicle is rated according to or similar to the protocol of SAE J2807,
the first step would be to establish the loaded weight of the test trailer and
the second step is to adjust the load so the tongue weight is 10% of the trailer weight.
I think it's likely this is where the 10% figure comes from.
Ron
