J2807 SAE towing standards

drittal wrote:

ShinerBock wrote:

drittal wrote:
For one, 2011-2014 f150 ecoboost was a different truck than the 2015.

The very same 2011-2014 F150 with a 3.73 ratio is rated to tow 11,300 lbs using the same brakes, frame, and powertrain. This means if Ford was "fluffing" the numbers then they would have given the 3.55 an 11,300 lb tow rating instead of the 9,800 lb max tow rating that they gave it since the truck itself can clearly handle it.

The 2014 F150 has the same front 13.8"/rear 13.7" brakes, the same power rated 3.5L Ecoboost engines, the same 6R80 transmission, the same 8.80" or 9.75"(HD) rear axle, and the frame has the same 49,300 psi yield strength as the 2011-2014 model. The major difference between the two is the body design and and the weight savings.

Are you sure everything is the same? From Road and Track...

"Engineers took 70 pounds out of the frame using some new processes and a larger percentage of high-strength steel. The aluminum body took care of the bulk of the claimed 700-pound weight loss, lowering the center of gravity by about 0.6 inch along the way. The lower CG lead to better handling which prompted extra frame strengthening to further improve the way the truck drives. These changes wouldn't have been worth the admittedly minor weight and cost increases on a steel truck. Less mass also means an improved power-to-weight ratio, so the trucks perform better and can carry more with similar output."
"Suspension geometry changes were aimed at reducing axle wind-up, which is an engineer-y term for the binding that causes shakes, shudders, and other sh…tuff you don't want. They went to staggered outboard shock mounts—one located ahead of the axle and one behind—and also aligned the engine and pinion better, allowing the use of one-piece aluminum driveshafts in many cases where Ford used two-piece steel units in the past."
"The F-150 goes from worst to best steering among full-sizers by solving the old setup's two main problems: it didn't self-center and it required constant input during high-speed, straight-line cruising. The parts are similar, but the control method is different; it's now current-based instead of voltage-based, allowing for more precise tuning. The rack is mounted differently now as well, taking compliance out of the system to improve trailering. The lower CG also plays a part, as does the rear-suspension design."

http://www.roadandtrack.com/new-cars/first-drives/reviews/a6360/first-drive-review-2015-ford-f150-pickup/

Look for yourself although everything stated above would not increase tow ratings except for weight......

2014 F150

2015 F150


But, like I said before. The same exact truck with the only difference being a 3.73 is rated to tow 11,300 lbs so clearly the 2011-2014 truck was rated to handle more weight yet Ford didn't rate the 3.55 that high until the J2807.