Trailer Sway with Firestone Transforce AT

[PMJohns]

Has anyone experienced excessive trailer sway with Firestone Transforce AT tires?

Tow Vehicle - 2021 Ram 2500 4WD Crew Cab with Long Box and Cummins

Hitch - Reese Straight Line Weight Distribution (good sway control)

Trailer - 30’ Airstream (~ 9000 lb)

This is exactly the same setup I had on my 2011 and my 2016. On the 2011 and 2016 I ran Goodyear Silent Armor then Goodyear Adventurer tires. Neither of these vehicles had the sway issue that I have on my 2021 with ghe Firestone Trackforce AT tires. Near as I can figure, either the suspension is radically different (my 2016 has ghe same rear suspension as the 2021) or the Firestone tires suck.

 

[jkempken]

I a had similar issue with my 3500 SO Cummins on the stock tires. Pulling an enclosed car hauler approx. 8000 lbs. in some decent wind the rear end would sway. I put some 35x12.5R20 Ridge grapplers and she stays planted so far. I know there was another thread on here of a guy with a similar experience where the sway followed the stock tires.

 

[Brutal_HO]

It's the "or" part you got right.