Trials Tire Golf Ball Test

A video showing what is so special about the Radial Ply Trials Competition Tire. Its carcass is what does the work as it shapes to the terrain surface. The knobs don't do the work. The edges of them help but it's the space between the knobs and the radial plies that allow the body of the tire to do the magic.
If you spin the tire, you lose that shaping ability as the tire becomes round.