So I just picked up a 2008 Sportsman 500 x2, and the front tires are pretty worn from asphalt riding (about 2300 miles on it). I have done a lot of reading on this forum about tires and wheels, and from what I can tell I would be well off with the Maxxis Bighorn tires. I couldn't find the stock sizes available (Stock front is 25X8-12 and rear is 25X11-10) so it looks like I will have to upgrade the wheels also. The stock wheels are different sizes but looks like I will have to go with 12" front and rear for aftermarket. Everything I saw was a 12 x 7 4.0 +3 - I am guessing the 4.0 is positive offset (which if I read correctly a 4" positive offset will move the tires in 4"?) So I would need a wheel spacer? This is all very confusing, I wish they would just make the factory size so I didn't have to change everything. I need a little insight here!