Compared to the the Perrelli Velo which i have used for a few years these have less grip when braking, I have had several instances where I have had a panic thinking i was going straight to the scene of a crash, in terms of speed they offer nothing different in fact i''d say they are slightly slower, cornering grip is not as good.. I've had two puncture both where it's been foreign object piercing the tyre the only punctures i've had on the velo were pinch punctures from not seeing a pothole when at high speed

Tires roll really well but sadly the front tyre sidewall has split, like the other review, it is virtually new and not had an obvious issue. I won't bother trying to get a refund from Sigma as they accused me of crashing the bike (which I had not) when I had an issue with my broken Mavic carbon wheel and had to endure the horrendous customer service from Michael.