Why We Won’t See 40mm Tyres On The Cobbles | GCN Tech Show Ep. 432

The Cobbled Classics are here, bringing some of the most brutal racing of the season, but why have the pros stopped using crazy custom tech and suspension for Paris-Roubaix? We dive into the science of tyre clearance, rolling resistance, and aerodynamics to explain why you probably won't see 40mm tyres on the cobbles anytime soon. Plus, we check out a weird new graphite chain lube on Kickstarter, share some latest Zwift news, and rate your rides in the Bike Vault! 🏆 Win a Selle Italia SLR 3D Carbon Opal White saddle and matching bar tape! 👉 https://gcn.eu/SelleItaliaOpalWhiteCo... ⏱️ Timestamps ⏱️ 00:00 - Welcome to the GCN Tech Show! 00:24 - Why Pros Won't Use 40mm Tyres at Paris-Roubaix 04:00 - The History of Crazy Cobbled Classics Tech 07:15 - Aero vs Rolling Resistance on the Cobbles 11:00 - The Importance of Tyre Pressure 18:50 - Hot Tech 24:08 - Essential Spares & New GCN Merch 26:28 - Zwift Racing League News & Saddle Competition 27:52 - Comments of the Week 31:17 - Bike Vault Useful Links: GCN Tech Uploader 👉 https://gcn.eu/techuploader Subscribe so you don’t miss a thing 👉 https://gcntech.co/subscribe Insurance: Viewers in the USA and UK can explore GCN Insurance products 👉 https://gcn.eu/GCNinsurance Sign Up To The GCN Newsletter 👉 https://gcn.eu/Newsletter Visit the GCN Shop 👉 https://gcn.eu/gcnshop GCN WhatsApp Channel 👉 https://gcn.eu/GCNwhatsapp GCN Instagram Broadcast Channel 👉 https://gcn.eu/instagrambroadcast Join the GCN Club on Zwift and ride with us! 👉 https://gcn.eu/GCNClubRides What's the widest tyre you'd run on your road bike, and do you miss the crazy custom suspension setups from the old days of Paris-Roubaix? 🇫🇷👇 Watch more on GCN Tech... 📹    • Externally Vs Internally Routed Cables, Th...   📹 Watch our Editor’s Choice Playlist 👉 https://gcntech.co/EditorsChoice 📹 Watch the latest GCN Tech Show 👉 https://gcntech.co/GCNTechShow 🎵 Music - licensed by Epidemic Sound 🎵 #gcntech #gcn #cycling #roadcycling #roadbike #bike #bikes #bikelife #biketech #techshow #parisroubaix #cobbles 📸 Photos - © Velo Collection (TDW) / Getty Images & © Sprint Cycling Agency Brought to you by the world’s biggest cycling channel, the Global Cycling Network (GCN), GCN Tech is the only channel you need for all things bike tech – past, present and future. Simply put, we’re obsessed with tech: we seek out and showcase the best in bikes, components, tech, accessories, upgrades and more from races and events, tech shows and product launches across the globe to bring you the best in road bike technology. We’ve got great maintenance videos to help you get the most from your bike; pro-bike tours from all the biggest races; special features and the weekly GCN Tech Show! Thanks to our sponsors: Canyon Bikes: http://gcn.eu/-Canyon Orbea Bikes: http://gcn.eu/Orbea Pinarello Bikes: https://gcn.eu/Pinarello Topeak Tools: http://gcn.eu/Topeak CamelBak: https://gcn.eu/Camelbak Pirelli Tyres: https://gcn.eu/Pirelli Vision Wheels: http://gcn.eu/Vision Wahoo Fitness: http://gcn.eu/Wahoo-Fitness Park Tool: http://gcn.eu/-parktool Selle Italia: https://gcn.eu/SelleItalia Zwift: https://gcn.eu/Zwift Gtehcniq: https://gcn.eu/Gtechniq Core Body Temperature: https://gcn.eu/corebodytemp Precision Fuel & Hydration: https://gcn.eu/precisionhydration Elitewheels: https://gcn.eu/Elitewheels CeramicSpeed: https://gcn.eu/GCNCeramicSpeed HJC Sports: https://gcn.eu/hjcsports Shimano: https://gcn.eu/shimano Cyclowax: https://gcntech.co/cyclowax Watch our sister channels: Global Cycling Network -    / @gcn   GCN Racing -    / @gcnracing   Global Triathlon Network -    / @gtn   GCN Italia -    / @gcnitalia   GCN en Español -    / @gcnenespanol   GCN auf Deutsch -    / @gcnaufdeutsch   GCN en Français -    / @gcnenfrancais   GCN Training -    / @gcntraining   Global Mountain Bike Network -    / @gmbn   GMBN Racing -    / @gmbnracing   GMBN Tech -    / @gmbntech   Electric Mountain Bike Network -    / @embn