Only downside I've found with the Ridge Grapplers is that theyre not 3PMSF (Three Peak Mountain Snowflake) rated, meaning the rubber compound isn't ideal for very low temperatures. Now this whole rating seems to be a huge controversy because some people say decent all terrains without the rating are fine in the snow, and some say that theyre awful in the snow. I don't plan on using my rig much in the cold, moreso chasing the heat if anything, but it'd be nice to have the piece of mind in case theres some crazy anomaly snow storm on a mountain pass. My second choice would probably be the trusty BF Goodrich K02s. They are in fact 3PMSF rated, and the most positive rated ON/OFF road all terrain tire on Tirerack, that comes in a 37" diameter. Only downside is the minimum width on the 37 is 12.5 wide, so at least 2" wider stance on each side, plus any spacers youd (have to) run in between.