Hi. I want to get these tires for a Yamaha Raptor 660. Will these tires fit onto the stock rims? The specs for the tires are 20 x 11-9 but the stock tires are 20 x 10-9. If these tires do fit do you think they would do well in loose/soft dirt(not sand),trails, and hills(not dunes). Also how do these tires handle on pavement?