Challenge Grifo 33 Cross Tire - Tubular $114.99
One of the best improvements you can make to your cross rig.
If you ride clinchers in 'cross races, chances are, that at some point, you've kicked yourself for not upgrading to a setup that incorporates the Challenge Grifo Cross Tubular Tire. It might have been when you flatted with one lap to go, or it could have been when your arch-rival edged you out in a slop'fest because they had a clear traction advantage. Of course, going tubeless could prevent these situations too, but the fact remains that the combination of a tubular tire's light weight and low PSI requirement make it a clear favorite for 'cross. And when it comes to all-around tubular 'cross tires, we'd argue that none work as well as the Grifo Cross.
The hand-made Grifo Cross has a highly puncture-resistant and lightweight Super Poly casing. With 300 threads per inch, you're able to expect a remarkably supple ride. In fact, we've found that it's a difference that you'll feel the first time out. Additionally, the Grifo tread is hand-glued onto the casing when the casing is already mounted and inflated on a wheel. As a result, the tread isn't put under tension when you inflate the tire on your wheel, and that lack of tension leads to a lower rolling-resistance, added grip, and increased comfort.
A superior all-around 'cross tire must have tread that provides a harmonious balance between low rolling-resistance and grip, and the Grifo's tread is world-renowned for striking that balance perfectly. The knobs are relatively low-profile, but they're effectively spaced in order to shed mud and to provide excellent traction. Simply put, the Grifo Cross rolls fast, it bites into soft ground, and it corners as if it's on rails.
The Challenge Grifo Cross Tubular Tire is available in a 700c x 33mm size and in the color Black/tan. Each tire weighs in around 415 grams. Please note that Challenge gave this tire a latex inner tube to save as much weight and roll as fast as possible. Because latex is more porous than butyl rubber, you'll have to pump up a bit before your rides.