I am in the process of getting a set of tires for my SP, but I will have to buy a new set of rims for it. The rears are only a 10 inch rim, and I am going to a 27X12X12 tire, so I will need a 12" rim for the rear. I am looking for a steel wheel, 'cause the rims now have mucho dings and bangs from the rocks I drive around in. So aluminum would not be a good choice. I emailed Polaris 3 times, they never sent me a rim size designation, BUT they DID send me the torque for wheel nuts, and how to properly attach a rim to axle, helpful huh? Sometimes I wonder... If you have put new wheels on your SP, let me know what you bought. Hafta get'em, tires are on there way. I assume that the front rims are okay, they are a 12' rim, but not the rears.