I'm looking for some help picking a tire setup for my father in-laws 2002 Polaris Sportsman 500. I bought 4 ITP Type 6 chrome wheels for father's day, and we have decided to put new tires on these wheels. All four wheels are 12x7. We're not looking for a real aggressive or expensive tire. Should I buy all four tires the same size (25x8x12) or put a wider tire on the back? Thanks for the help as I'm not really familiar with the utility quad scene.