Thanks I will clarify, I don't really care what size rim at this point as they have not been bought, I would guess though on an 8in. The background of the situation is that I want to run 37" tires but would also rather run a 36" sx over a 37 mtr. I would love a set of Krawlers but dont have the bling. Then i heard that a 38x12.5 sx runs small. If it does in fact run closer to 36-37"; I am going to run a 38x12.5 sx!