Originally Posted by Teamfour
You need to have more tongue weight. You are at 10%. See if you can get it to 12.5%.
Agreed. If you have too much weight lifted off the back of the truck it's worse than no WD.
I have a 32 foot trailer which is really heavy in the rear with 2 slides rear of the axle and the f150 sway control has never had to react. It may be all about tweaking your WD.
And with p rated tires pump them to max 44 lbs. my truck came with the factory Goodyears that are like riding on jello bowls rolling the soft side walls.