2018 Volvo rear end sway?

It’s because of the bags and the new tires. Volvo’s always have the feeling. At least all of mine. Where my cascadias don’t

You’ll get use to it. But it won’t sway with trailer and with load it’ll feel perfect

 

Wow! , sounds like you spent a lot of money on stuff that maybe didn't need to be replaced in the first place. After doing all that then just selling the truck, gotta ask yourself maybe it was not the front suspension at all.?

I have had 0 issues and have been driving the truck daily for 6 1/2 years now.. heck same original shocks .

I'm betting it was more cab suspention problem more then front suspension.