I have the Terra Grappler AT's on my old GMC, they are metric sized but work out to about 34" actual height on the truck. They have been great in rain, snow, ice, mud, slimy boat launches and pebble boat launches like Mukilteo. I'm pretty sure there is no tree I can't climb if the bark stays put! They haul weight well too, I had my truck loaded down pretty good with a bunch of scrap metal (3/4 ton squatting about a foot), the sidewalls didn't bulge out on it and it drove pretty much as normal so long as I left extra room to stop it! They are also very quiet, I have a stock exhaust on my truck and hear it over the tires on the freeway.