Widely spaced knobs shed mud easily and it has almost unparalleled grip. Dirty Dan: Huge rubber spikes make this a tyre suited best to extreme mud conditions. While the two above dominate the ...

Over the weekend, Bielsko-Biała served up some wet and wild World Cup mountain bike racing, and one tire came out on top—an unreleased Schwalbe Dirty Dan Gravity Pro tire raced to two elite ...