The Deepest, Widest and Wildest Gravel Wheels We’ve Ridden | Meet their Creator
We sit down with Mark Hopkins the founder of CSixx to find out how his 65mm deep gravel wheels became the biggest surprise in the insane crosswinds on our wheel test. From rim shape and aerodynamics to internal width, spoke choice and real-world durability, Mark breaks down the design philosophy behind these seriously deep gravel wheels. We also talk about why a deeper wheel can still feel incredibly stable in brutal Cape Town crosswinds—and whether the 65mm is the right choice for a 517km gravel race. Is deeper really faster, or have we completely lost our minds chasing aero gains?