I think that h3s come with 33's stock because h2's are 35's stock. I have seen 35's on a h3 and it looked like it fit good. Try 4wheelparts.com, also check out the picture below. I have 37x12.50 BFG KM2 tires and 20 inch Rockstars, but i drive a h2 not a 3 so you are gonna have to stick with the 35's unless you lift.
