The first efficiency tests of 29" vs. 32" tires tell us bigger is (probably) faster

Escape Collective recently published findings from their real-world Chung Method testing, suggesting that 32-inch wheels may offer a tangible efficiency advantage over the current standard 29-inch size for off-road cycling. Conducted on gravel, the tests indicated that the larger wheel diameter could reduce rolling resistance, potentially translating into faster times for gravel and mountain bike racers. While the data is preliminary, it presents a compelling case for further exploration into wheel size optimization.

This isn't the first time the industry has grappled with wheel size debates, with 26-inch, 27.5-inch, and 29-inch all having their moments in the sun – or mud. The move from 26" to 29" in mountain biking was met with initial skepticism but ultimately proved transformative, offering improved roll-over capabilities and stability. Should these 32-inch findings hold up under broader scrutiny, it could signal another significant shift, forcing manufacturers to retool and riders to reconsider their equipment choices, particularly in the burgeoning gravel scene where marginal gains are fiercely sought.

Ultimately, physics is a stubborn master. If the data consistently shows bigger wheels roll faster, the market will inevitably follow, regardless of how many frames need redesigning. The wheels of progress, it seems, just keep getting larger.