Smooth center stripe for fast rolling on pavement and hardpack with densely packed micro knobs followed by larger rectangular knobs on the shoulders for cornering traction Hurricane is an excellent all-terrain tire for cyclists who want to be fast on the road and expect their tire to perform well off-road RCGD - RaceGuard - A synthesis of special india rubber and several layers of nylon fabric offers very effective protection against penetration punctures while minimizing penalties ADX _ Addix compound found on the Performance Line made to serve as an all-around, well balanced compound for all uses