I have a 2009 tundra 5.7 auto 4.30 gear. I have added air bags. I tow a 8000 lb toy hauler, but truck sways when being passed by 18 wheelers. I am thinking about sway bars and truck tires ? Does any body have a soluation ?
What type of hitch are you using? Some weight distribution hitches have sway control devices built into the hitch. When you pass a semi on the freeway, the articulation between the truck and trailer is what causes the sway.
Adding a sway bar to your truck will help you take corners when not towing.
I also use an Equal-i-zer WDH on my 6000# TT. They now have an optional teflon slide that reduces noise in turns, etc. The hitch, along with a set of air bags and a prodigy P3 controller is what I have now and the set up works great with zero sway. If I were towing that much weight I would get a set of E rated tires right away. The michelins that came with the truck are ok for now with 6K, but I will replace with E rated when they wear out.