Largest tire/wheel on an 08?
 

What is the largest tire size I can get on an 08 H2 without a lift and without rubbing?

Its the same for all H2's 03 thru 09. Anyting above a 35" will tend to rub depending on the wheel offset you choose. Most popular are 20" wheel with a 325/60/20 tire or a 22" wheel with a 325/50/22 tire.

I can tell you 37's w/ 20mm offset are not even close to fitting....

****..now I need to buy a lift...

I have 35s, they fit fine.

I like 20" we also have them on the BMW carswe have in the X5

They look the nuts and the price of the tyres are better.

35's are the size of the standard hummer rims and tires I believe.

37x12.5x17 BFGoodrich tires KO's or KM2's fit on stock rims without issues at all. Only rubbing is on the swaybar causing no damage to tire or truck. Its when you go to a wider tire that you start having the rubbing issues. I had the BGF KM's in a 37" size with no problems. I now have the Toyo M/T and they are 13.5 wide They rubbed untill I did a slight lift.

So the answer to this question is Yes you can fit a 37x12.5x(what ever wheel size you want) "mine are 18's" without rubbing issues.