Rolls fast and smooth with great handling. Very thin casing and punctures easily. 80 mile róad ride today and front and rear suffered many punctures and 2 gashes requiring a tube in the front to get home. Prior tire Corsa CX 3 with STD or latex tube. Went through 3 of these tires (speed g) in less than 2 months (tubless) where as I get 2500-3000miles out of the Corsa CX 3 rotating front to rear with new going to front. Never got a chance to get mileage figure on these. Race Day ONLY in the future with Stan's pro sealer.