First off, let me just say that this is a awesome site. I have been lurking around the forum for a month or two and have picked up all sorts of valuable information about the H3. I've had mine now for a little over 10 months and have put over 16,000 miles on it with no problems to speak of.
I really want to put some wheels and tires on my H3, but I'm nervous about making the wrong decision. What I really want are the Helo Maxx 6 wheels and a set of Nitto Mud Grappler tires. Here is where the problem lies. I want to go with at least 18" wheels. My first thought was to go with 18" x 9" 6-5.5 with + 18 offset Helo Maxx 6 with 33-12.50-18R Nitto Mud Grapplers. But then I saw a set of 20" x 10" Helo Maxx 6 with Nitto Mud Grapplers in 33-12.50 -20R on Ebay. I realize most of you guy are running your stock rims with 35" MTZ's. Any thoughts, suggestions, or comments would be appreciated.[8D] I worry about a rubbing issue.Also, I have not done it yet but plan to crank my T-bars 3 turns to level the truck out. Thanks

 

you will not rub at all, but the tire will stick out of the fender some. Stock offset is +38, the closer go you towards zero the more the rim moves towards the fender, the further positive you go from zero the closer to the control arm the rim moves. By going to +18 you will be moving the rim away from the control arms towards the fender, eliminating the chance of any rubbing.

The rims your looking at are 10" wide so you have to look at backspacing too. If your backspacing is around 5-6 you'll be ok, if it's more than 6" you may rub.

I have 17x8.5 with +12 offset on mine which will stick out more than yours and have no problems at all

 

Thanks Importkiller for your response. I was hoping that I would geta response from you since you seem really knowledgeable about tire and rim fit. I think I've decided to go the 18 x 9 route. That way there is more sidewall and the rims are 1" narrower allowing for more protection of the rim itself. Has anybody run the Mud Grapplers that you know of. I am wondering how much noise they make. I understand that the MTZ's are fairly quite.

 

alot of guys are running the mud grapplers and I haven't read a complaint. They say they are quiet. I know a few months back they were near impossible to find in stock, if it's the same now..good luck!!

BTW...post pics when you get em!!!!

 

I purchased my Hummer with wheels and tires from the dealer. The wheels are 20" and came with the Nitto tires. I'm pretty sure they are 33's. The only problem I have had is when I installed the Rancho lift is that the offset was not enough and I had to add spacers. If you ever plan on lifting make sure you get the correct offset. I have been told that I can now put 35's on and still will not scrub. The only problem with that is that it will not fit in the garage.

 

that makes no sence at all. Lifting doesn't change your hub to control arm distance, why would they rub after installing the lift? If he is going with a less positive offset wheel than stock it will push the rim oway from the control arms and towards the fender...doesn't matter what lift is put on a +12 or +18 offset rim will not rub! And you could put 35's on a stock h3 with no lift and still not rub...even with stock rims!

 

ImportKiller,
if you could do your tires over , would you still have choosen everthing the same way you did ?

I like the look of your tire set up , I have the hummer chrome wheels also.
With the 35's and raising your TB , how much higher does your H3 sit over stock ?

If I wanted the same tire set upas you , what would I order ? What would be your recommendation to make them stick out a little further with out buying new wheels.
Thanks ..Shawn

 

OkayI have the tire sizes wrong.I have 35's on there now I can put 37's. My wife drives the H3.The offset on the wheels was a 5.5 and Rancho lifts require a 5.0. That is why I had to do the spacers. Sorry about that.

 

I don't have the stock Chrome wheels, I have 17" Detata rims. I'll post a better pic of the rims here.

If I had it to do all over again I would probably probably get the same thing I have now. Or I might go with a bigger tire....with some minor cutting I know I can clear a 36.

If you want your stocker rim to stick out more just go with a spacer I had to put them on myTahoe due to rubbing issues and they worked great for over 50,000 miles without any signs of failure.
here are my rims

 

Wash the blue crap of those Mickey's ... sheeeeeeeeeesh