Well, at some point I ran 2.125 (beach cruiser style) rims with 2.25 mud tires for winter, studs on the sides and all, but that was because the roads I rode on had a really bad case of car ruts from poor maintenance. Anyways taking shortcuts through skidoo trails most of the times it would float, mostly when the snow was a few days old and it was cold out, and with fresh snow or less cold weather the back wheel would occasionally punch through, damages the trail and makes it real slow. Tires were about the size of a coke can.