Surly ExtraTerrestrial

Yes, this tire is tubeless ready. It features a folding bead and is designed to be set up without inner tubes if you prefer that configuration for better puncture resistance and lower pressure capabilities.

The ExtraTerrestrial is designed primarily for hardpack surfaces, gravel, and dirt roads. Its directional tread pattern balances efficient rolling on smoother terrain with enough grip to handle softer, loose conditions during long-distance touring.

It uses a dual-layer defense system: a Kevlar cap under the tread to stop punctures from sharp debris and a nylon breaker in the sidewalls to guard against cuts and abrasions from rocks or trail obstacles.

These tires are designed for rims with an internal width between 23 mm and 30 mm. Using a rim within this range ensures the tire profile is supported correctly for optimal handling and stability.

Yes, the high-volume casing allows you to run slightly lower tire pressures, which helps absorb road vibration and small bumps. This provides a more comfortable ride, especially over long distances or rougher surfaces.