Hey guys, I just bought an 07 H3 that has 20" tires on them. The tread is pretty beat and I slid all around today in the snow. I'd like to find stock wheels and get some 305's on them but if I can't find 16 inch wheels, what size tire will fit on a 20 inch rim? I'd like to have something that filled the wheel well as much as possible and although I don't really offroad, I want at least all terrain so I can get through snow with no problem. Thanks for any suggestions.

Ben