The Challenge Strada Bianca Clincher tire is designed for bumpy, rough roads. Not only is it one of the toughest tires in Challenge’s lineup, it’s also one of the smoothest-riding, which, for a manufacturer that’s known for its smooth-riding tires, is saying a lot.
The Strada Bianca’s casing is its handmade, puncture-resistant, lightweight SuperPoly material. With its 260 threads per inch (TPI), you’’ immediately notice the supple ride. On top of the casing, Challenge added a belt of corespun polyester, made by twisting fibers around a central filament core, creating one yarn from multiple strands. The material is 40 to 50% stronger than typically spun materials, while retaining or even reducing overall weight. This is the PPS (Puncture Protection System) layer, and it's specifically made from the tightly woven polyester material to preserve the casing's supple feel. Challenge then added another PPS layer for additional puncture protection.
The tread pattern—the Paris Roubaix Herringbone—is among Challenge’s most versatile. The tread is hand-glued onto the already inflated carcass. This means that the tread isn’t under tension when you inflate your tires, resulting in lower rolling resistance, added grip, and increased comfort.
- SuperPoly material
- Puncture Protection System
- Paris Roubaix Herringbone tread
- Q & A
Too tight to be usable
Tried to use these tires with a set of rims that I have had no problems fitting tires to in the past. Once I had used every trick in the book and almost an hour to get one side of the tire on the rim it is almost impossible to get an inner tube under the tire as the whole tire was so tight against the rim - when not inflated the middle of the tire has less circumference than the edge! Again with a lot of effort managed to squeeze a tube under but with it so screwed up to get it in just blew as I pumped. Tried again a few times with the same result. It may be better with a 650 tube. If you are willing to give these a go do not use with carbon rims as either your rims or levers will break before you get the tire on. Same problem with the two tires I bought so presume this is not a one off.