The Fire XC Pro design offers excellent traction and cornering in just about any terrain without the penalty of high rolling resistance or soft fast wearing tread compounds. This is a classic XC tire that can do double duty on lots of technical terrain. The Panaracer Fire XC Pro 26" Mountain Tire features a mix of 2, 3, and 5mm center knobs, tall cornering knobs, and color stripe on sidewall made of Silica compound for added durability.