275/65/18 (stock size) E-rated questions

I need to change out my stock tires for some E rated. We purchased a new travel trailer two weeks ago. Same weight same length. Will be adding Firestone air bags and a TRD rear sway bar this weekend. Have pulled the trailer a couple of times and the Tundra has no issue with power. The only issue I have is the rear of the truck feels a little washy at around 60 mph. I am certain the didn't set my WDH properly at the RV dealer so I need to make some time and find a nice level spot to work. Might just use the middle of the culdesac and piss of some neighbors. From everything I have read the rear sway bar and air bags will make a significant difference. It was a toss up between the Firestone bags or the helper springs. Bags one. Now, hopefully Toyo has a nice E rated tire.

 

DT dropped ball on my Ridge grapplers order. 9 days n counting.

FedEx came by today though. Boss4x4’s!

 

Toyo tires, from what I’ve seen are heavy. Great tires though

 

Toyo's are all I would run on my FJ. I could almost climb a wall with that thing. Never worried about getting stuck. The stock tires that came on my Tundra are nice on the highway but the suck in the snow. Can't wait to trade them out.