c50 found some information you might be interested in regarding tires and wheels and the like. Go to
www.stovebolt.com/techtips/wheels/ the tires that the guy in the picture, is carrying on the scooter, are the type of tread I have always had on my c50. They wear very well, have good traction, have met my driving conditions here in up state ny(perd near to O Canada). Not to much use of truck in the winter though got caught out in early snow with trailer on. got home as long as I kept momentum up. A good 8'' of wet snow.