i have 27's bighorns on mine but use to have 28's mudlites they fit but had to crank up the front shocks or they rubbed on the front bumper a bit when you hit big bumps with the steering turned
Sorry, forgot to mention. Both the machines have itp ss wheels on them, not stock. But they will fit as the dealer that i bought them had 27" bighorns on a lime green 2011 teryx sport with stock wheels when i was there.