Challenge Gravel Grinder Race 700x38c Folding CX Clincher Tyre Black

It's so easy to express excitement about a product once it meets your own personal approval standards and, like many other riders, we're sure you will agree that these are quite possibly the best, fast-gravel racer/commuter tyres you can get right now that are capable of handling all road surfaces.
Developed with longer hard-pack and loose gravel races in mind, the tyre is made with vulcanized natural rubber for more suppleness and grip than stiffer artificial rubber. Its high volume also contributes to a plush ride while increasing durability compared to Challenge's other gravel-minded options. The Gravel Grinder features a centre file tread paired with raised side knobs for low rolling resistance on the straights and confident traction when cornering.
Italian-designed, these tyres expect -- and encourage -- rough riding conditions and feature a nylon casing reinforced with the Challenge Puncture Protection System (PPS) to get you through your rides and races without losing time changing flats. The Gravel Grinder fits on most rims measuring between 17 and 23mm wide (though its healthy girth recommends it most on the wide end of that spectrum), and weighs in at a claimed 375g.