If you want a tire that does everything, X-Circuit is the tire of choice. Great for track or trail where tight cornering and quick hook up for quick acceleration is important. Because it's in the Tractionator series, it's a Heavy Duty tire for long wear miles and puncture resistance. The asymmetric tread design has more driving surfaces to hook up and go, while allowing the tread to have more exposed cornering surfaces for fast tracks and tight or flat corners. The front is reversible (direction switch able) for different applications (tight pack or loose pack terrain). If used in enduro applications we recommend loose pack direction.