Surly ExtraTerrestrial

This tire is optimized for hardpack surfaces, such as gravel roads, fire trails, and pavement. While the high-volume design offers some versatility for softer terrain, it is primarily built for efficiency and durability on firmer, unpredictable surfaces.

Yes, the ExtraTerrestrial is designed as a tubeless tire. This allows you to run lower pressures for better comfort and traction while significantly reducing the risk of pinch flats.

It features a dual-layer defense system: a nylon breaker in the sidewalls to resist cuts and a Kevlar cap under the tread to prevent punctures from sharp debris. This makes it a reliable choice for long-distance touring where flat protection is critical.

These tires are 29 x 2.50 inches, so you will need to ensure your frame has sufficient clearance for a tire of this width. They are designed for 29-inch wheels, but always check your bike's maximum tire clearance specifications before purchasing.

No, the low-profile, directional tread pattern is designed to minimize rolling resistance. You will find it runs relatively quiet and smooth on pavement compared to aggressive, knobby mountain bike tires.