diamondd2

They don't make these tires in 275/50R22.

I went with 305/45R22 Hankook DynaPro AT2 Extreme (RF12). Yes they fit. Some of the best tires I ever owned. Just as quiet and smooth as those Michelin's but look way better and are 3 peak snow flake rated If you decide to go with the Michelin LTX M/S go with the 305/45R22. They are XL load and will work well with your truck. The LTX in 275/50R22 are not XL load and wear extremely fast and unevenly on these trucks. They are also prone to cupping. I'm speaking from experience. There are some new AT offerings from Toyo and Nitto in 275/50 if you feel you have to use that size. -

Because that would be more than the 3.5" of total lift. You only need 1.5" to level.

It really doesn't matter which company or builder I referenced or used as for example, because someone would show up to tell use they don't what they are doing and all their products suck. Evidently, I was right.

1.5" TB Leveling kit without changing the UCA's. That's 3.5" of total lift using the same UCA's. https://www.roughcountry.com/gmc-leveling-lift-kit-1319.html?utm_source=google&utm_medium=cpcs&utm_campaign=18887230045|&utm_content=&utm_term=||m||fit_first_1321-a&gclid=CjwKCAiAu5agBhBzEiwAdiR5tKM31DB-8iWaZ5pjqaDw24rIilVllmICLfokEglUEl8bBVsdebvckBoCapoQAvD_BwE

Then how do Trail Boss owners level their trucks? Trail Boss already uses different CV axles, but the same UCA'S. The only thing I forgot to mention is if you go more than 2" you need to install the Trail Boss CV's. -

There is a huge thread on Bilstein 5100's a couple pages in. Your UCA's are good to go up to 3.5" of lift. The Trail Boss and Non Trail Boss use the same UCA's. You can level a Trail Boss (+1.5") with no problems, hence the 3.5" lift.

Have a Flowmaster 70 Series welded in. Don't remove the flapper or the resonators. Anything Cat-Back on these trucks are going to drone, a lot.

305/45R22 (33x12) will fit and is about as wide as you can go without hitting the UCA. The 12" wide tires look right on these trucks as the 275's look too narrow. Some 33x12.5 will just make it, but it's a crap shoot. I went with 305/45R22 Hankook DynaPro AT2 Extremes (RF12's). Couldn't be happier with this choice.

Well, it's a 6.2 so.........

305/45R22 (12" wide) on stock 22x9 wheels and 3/8" spacers.

Are those factory wheels? Never seen them before.

There is enough suspension geometry built into the front end to level out a Trail Boss. GM anticipated people doing this. The only parts you would need are the TB CV axles (they are different than stock cv's) and the Bilstein 5100's for the TB. So yeah, 3.5" of front lift for you is just like leveling a TB. -------

Why don't you try uncovering the screens and putting the flapper back on.