The C9308 and C9309 Ambush tires are high performance tires by Cheng Shin. They feature a directional front tread design that allows you predictable and precise cornering and straight-line stability at high velocity. These tires are available in 4-ply, with reinforced knobs attached to the tire for better traction in wet or dry terrains. Cheng Shin Ambush tires offer great puncture resistance and reduces chances of tire roll. They are available in 20 inch, 21 inch and 22 inch tire sizes.