Should you be riding U-shaped deep section rims?

With the changing shape of aerodynamic rims, Stuart Clapp examines if the shift to wider wheels spells the end for the old-school

When aero wheels first adorned the bikes of professionals, and rich amateurs, they were not the same shape as they are today. Round, yes, but the similarity ended there.

The material they were made from has changed from alloy to carbon, and along with it, their weight penalty has all but disappeared. In those early years, time triallists ran the risk of being blown into a neighbouring field at the faintest sneeze of a crosswind. Honing the profile of the rim has changed that and made them increasingly easy to live with.

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Jack Elton-Walters hails from the Isle of Wight, and would be quick to tell anyone that it's his favourite place to ride. He has covered a varied range of topics for Cycling Weekly, producing articles focusing on tech, professional racing and cycling culture. He moved on to work for Cyclist Magazine in 2017 where he stayed for four years until going freelance. He now returns to Cycling Weekly from time-to-time to cover racing, review cycling gear and write longer features for print and online.