I just posted a few pics on the subject (NH White Mountain Hummer Happening)and the H2 in front of me is up there and he had no troubles at all. He went through everything everyone else did and in some cases he made it through even easier. I was skeptical of what he was going to be able to take it through but he did it and did a great job. I am not sure how high or what brand it is but it was up there. Those are about 40" tires he is running.
www.h2-outfitters.com