TFL Truck tested them all towing 12,000# 5ers at a Ford press event. All 3 had 3.73 axles according to Ford. VIDEO Time to climb the 7% grade: Ford 2:36 Ram 2:45 Chevy 2:50
Chris how about just use the same trailers like they said they were doing! The trailer they used on the Ford has a front cap that slopes back. The ones hooked to the Ram and GM are taller and flatter.
The higher and flatter the front the more wind resistance you will have and the slower you will be. Ford supplied the trucks and trailers so this is yet another example of how far Ford will will twist the truth.