Your choice of tires for your big race is perhaps the most important decision you'll make all day. So much depends on the condition of the dirt, and if it's muddy out then you'll want to consider the Challenge Fango Cyclocross Tubular Tire. The handmade 260 TPI super poly carcass is lightweight and supple to give responsive handling. The hand-glued, pre-stretched tread offers a low rolling resistance. And though they are very light tires, you won't have to worry much about punctures since Challenge used the Puncture Protection System that features a special fabric under the tread. Tthe special attraction of these tires is how Challenge designed the tread. Unlike most treads that have blocks of different sizes and spacing to accommodate a certain type of terrain, the Fangos have a center aisle of knobs that have been scooped out like a corn chip. The center scoop knob provides a greater number of contact points while shedding mud much more effectively. The 33mm width will give you all the grip you'll need to put in that last minute attack. The other special aspect you?ll notice about the Fango tires is that the side knobs have a special curve to them that helps the edge stay grippy while cutting through the muck. Confident cornering, especially in soft, muddy conditions could spell the difference between finishing and winning. Weighing in at 400 grams, the Challenge Fango Cyclocross Tubulars are a race day tire that will perform best when the weather and road conditions have thrown their worst at you.