Specialized S-Works Turbo Allround 2 Tubular Tire Black 28 X 26The S Works Turbo Allround 2 Tubular is the tire of choice for many professional riders due to its enhanced performance traits over current offerings. It features an extremely low level of rolling resistance, superior cornering traction, and astounding grip through various course conditions. In other words, it's the tire that's purpose built to help you get to the finish line first. 28 x 24mm, psi 115 200, approximate weight 285g 28 x 26mm, psi 115