Get a set of black rockcrawlers. in 15X10 theyre around 50 a piece. if you can squeeze them onto a 15X8 the price is only like 35. And they look great too.
Use 8" rims for up to a 12.5" wide tire. Anything wider will promote rock rash to the rim edge, and debris will get between the tire and rim when aired down offroad.
Only use the 10" wide rims for a tire wider than 12.5". [addsig]
I have 15x8 American Racing Baja's and they can hold up to a 33. So you could go with a 15x8 or 15x10 depending on how much cash you want to spend.......[addsig]