Why do you think the Adventure Package has 33's on 16" rims?

More sidewalls give abetter ride and flex at low pressureand moreroom beteween the rim and rocks.

 

the bigger question is what size tires are you running....18's would be ok for a 37"+ tire...but for a 35" tire17 is the biggest I would go.

 

With that wheel you're probably going to have a wider tire - which you can still get an agressive tire, and you're only losing one inch of sidewall. Keep in mind, airing down is to give yourself a wider footprint...by having a wider tire installed, you will lessen the need to air down to get sidewall traction. Now, serious rock climbing when the tire really grabs on, you may see a difference...but the main danger isjust scratching and denting when larger rocks get tossed around -- I wouldn't let it hold you back from buying the wheels, though.

Check out how wide/agressive these tires are on 20s:

 

I can't understand how the Hooptie HUMMER trend has whored out the off road tire market. Off Road Tires need to have side wall thickness, it helps to absorb the shock, gives flex and bight and lessens the work shocks have to do. All those thin side wall tires are good for are making RAP videos and wearing out your A** on bumps because of the lessened rebound rates.

 

Thanks for the input guys. I will be going with 17's at the most so I will keep looking.

 

I just would not want the rim to stick out past the sidewall. I have seen too many rims bent up because the side wall of the tire did not extend enough. That is why I really like the 35's with the stock 16' rims but the 33's work good too.[/align]It's either a Hummer or a pimp mobil- make up your mind.[/align]

 

I think any wheels over 16 or 17 inches look ghetto on ANY vehicle, whether it's a street car, or a Hummer. Why would you want to copy ghetto fads of criminals?

 

So this vehicle has 'ghetto' wheels? (they're 20 inches)

 

i dont think that every body that have 20'are ghetto or criminals but thats just my two cents but then that just mei only have 16'so what do i no

 

Man! Nothing changes if you keep the same tire Hight as the OEM specs, 33" is 33" whether you have 2" sid walls or 6" side walls. Your Tranny PCM is programed to what tire came originally with the Hummer you bought you "Maggots" Here is some edumacation tools.
http://www.dakota-truck.net/TIRECALC/tirecalc.html, http://www.wheelsmaster.com/rt_specs...0RAM&text2=, http://www.offroaders.com/info/tech-...ng/mph-rpm.htm

P.S. My intention is not to offend.