I have gone to 18" rears for MX, still run the 20"'s for the trails. I need to know what everyones opinions are for the front. I have a set of holeshots (22" I think) on the front now, that are great for the trails, but I think I need a little smaller tire/rim combo for MX, any suggestions? I mostly run on hard pack, but sometimes it gets a little muddy and sometimes a little sandy, but mostly hardpack.