Yeah the traction with that 25 inch rear tire is amazing, the knobbies on the side of the tire really help when you turn on a steep slick hill. Going really fast on mud is not something I need to do. I can go fast enough, and your right, if you go to fast in the mud with a Bigwheel, it starts doing some exploring on it's own. But to be fair, even my standard dirt bikes well shoot off in unexpected directions when it gets slick. On some of the trails I ride on just the mere fact I can make it up, over and through them is a blast.