Are Tour de France riders cornering on their tyre sidewalls? Prototype 29c Vittoria tyre suggests they might be

New corsa pro 29c tyre
(Image credit: Josh Croxton)

The Vittoria Corsa Pro is one of the best road bike tyres out there, and is seen fitted to a good few teams' bikes at the Tour de France and throughout the season. For the majority of the season so far, the pros have been opting for a 28c width, pushing up to a 30c occasionally - especially for those nervous about hookless rim compatibility - and even 32c for races like Paris-Roubaix. But while at the Tour de France Grand Départ in Florence, we spotted some riders on team Visma - Lease a Bike using an unreleased 29c width of the Corsa Pro. 

Are pro riders so sensitive to tyre width that Vittoria felt the need to create a tyre that straddles the existing 28c and 30c options? Not quite.

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Will Jones
Senior Tech Writer

Will joined the Cyclingnews team as a reviews writer in 2022, having previously written for Cyclist, BikeRadar and Advntr. He’s tried his hand at most cycling disciplines, from the standard mix of road, gravel, and mountain bike, to the more unusual like bike polo and tracklocross. He’s made his own bike frames, covered tech news from the biggest races on the planet, and published countless premium galleries thanks to his excellent photographic eye. Also, given he doesn’t ever ride indoors he’s become a real expert on foul-weather riding gear. His collection of bikes is a real smorgasbord, with everything from vintage-style steel tourers through to superlight flat bar hill climb machines.