Challenge's Fango Open Tubular is an aggressive tire for mastering muddy conditions. You'll be zooming through the corners and off-camber sections thanks to its grippy side knobs. It's also a great choice for dry conditions, thanks to its ramp-shaped center tread and short knobs that let it also roll quickly. It's built on Challenge's light and supple 300tpi hand-made SuperPoly casing, with its polyester-reinforced sidewalls, and there's an anti-puncture strip under the tread. Open tubular tires feature many benefits of traditional tubular tires, but with the low maintenance and ease of installation of clincher tires.