I'm a little late replying here but I think I have something useful to add to this thread. I have a 2015 Hawk on my 2005 F250 Fx4. When I first got it installed I was a little surprised at the difference in the way the truck felt going down the road. Still had plenty of power but it felt a little wallowy on uneven surfaces. I replaced the E rated Cooper ATP tires with Toyo Open Country MT tires and the difference was significant. The Toyo's have 3 ply sidewalls and about a 3,9000 pound rating per tire-the Coopers were only 2 ply and rated at 500 pounds less. That's 2,000 pounds more total load carrying for the Toyo's! The point is not all E-rated tires are the same-check the specs because even the same tire will have different load ratings in different sizes. The truck feels much more stable with these tires on it. I also replaced the rear Bilstein shocks with Rancho 9000's and dialed them to the max load rating (they have a 9-step adjustment on the stifness) and that helped a lot, especially over bumps.