I have an extra set of rims for my sidekick and I've been kicking around the idea of putting tractor tires on them for offroad use.  I'm looking for something around 32 inches tall and about 10 inches wide.  I know they aren't DOT legal, but I just want them for wheeling, because I can't justify spending the money on mud tires that would end up being used 99% on road.  I'm having trouble deciphering tractor tire sizes and I could use some help and/or suggestions.  What size do I need and where do I start looking?  Thanks for the help