Challenge Gravine XP Tubeless Tire Black, 700x45

What Our Gearhead(R) Experts Are Saying:"I have been riding the Gravine XP Tubeless Tire on aggressive terrain where sidewall cuts and rocky impacts are a real and constant risk, and the XP reinforcement gives me the confidence to run lower pressures and push harder into the most technical sections without second-guessing the tire. The wide-spaced knobs and increased tread depth find grip in loose and rocky conditions where I would normally have to back off, and the 260TPI casing keeps the ride quality firmly in handmade territory throughout."The toughest gravel terrain demands a tire built to match it blow for blow, and the Challenge Gravine XP Tubeless Tire was engineered for exactly that confrontation. Combining Challenge's most aggressive gravel tread pattern with XP series Xtra Protection reinforcement throughout the sidewalls and under the tread, it is the tire that stays intact and in control when conditions are at their most hostile. Increased tread depth delivers the braking traction and cornering grip needed on loose gravel and rocky terrain, while wide-spaced knobs shed mud and dirt efficiently and find traction in conditions that overwhelm lower-profile patterns entirely. The XP construction adds reinforcement specifically where aggressive terrain does its most damage, guarding sidewalls against the lateral cuts and impacts that come with running low pressures at high speeds over sharp and unpredictable surfaces. The 260TPI Super Polyester casing delivers Challenge's handmade suppleness underneath that protection, maintaining the terrain conformity and ride quality that make this tire feel controlled and connected even in the most demanding conditions. SMARTplus compound keeps tread edges sharper and more cut-resistant through a hard season of aggressive riding, and PPS2 double-layer puncture protection adds two tightly-woven fabric barriers between the tread and casing for the maximum flat resistance the PRO handmade lineup offers. Available in 700x40C...