The Pirelli Scorpion S mountain bike tire performs admirably in most conditions, and could certainly be labeled an "all-around-tread" for anything but gravity-fed riding.
The Swiss tire technicians at Onza are bringing back a blast from the 90's with their revamped Porcupine mountain bike tire tread, available with black or white tread, and good ol' gum wall.
The Maxxis Assegai and Aggressor mountain bike tire combo imprint gravity tracks around the globe, and we recently had the chance to roll them around for a long-term test.
