@AzRim you might be able to find a 13.50 but with the factory offset you'll be getting close to the UCA. Especially if you use a chunkier tire like an MT. Might be better off just ditching the BFG's and going with a chunkier 12.50 like a Toyo MT, Nitto Trail Grappler or some of the other various MT's run/look a little wider than the KO2's.