The Billy Bonkers tire is designed for pumptrack dirtjump and slopestyle riding. This lightweight tire not only rolls extremely easily it also ensures fun loving and agile riding. If tricks and jumps get messed up Billy Bonkers remains good natured forgiving even egregious mistakes.Designed for maximum traction on crushed gravel and hard dirtFinely divided blocks multiply the gripping edges while in the middle small ramps help ease roll-off and make the tire even fasterMaximal micro teeth for grip on dusty and sandy ground