Unleashing profile and breathtakingly fast, especially when large volume counts, the Schwalbe G-One Speed is a tire for the real tough jobs. The G-One Speed is a 30mm wide road race version with V-Guard protection, and with the most modern Tubeless Easy technology. The G-One Speed uses a small circular nub tread profile that's tightly spaced and rolls very well on the road. The nubs get progressively taller as they reach the edges to enhance cornering grip off road. MicroSkin sidewalls provide protection and easy tubeless setup.