FAAAASSSTT!!!!! The Nano 40c is built for speed, & let’s just politely say it delivers. A 40mm, rounded profile & an elevated centerline provide enough volume for lower tire pressures & a smoother ride while still reducing drag & rolling resistance. This makes for an all out gravel destroyer that can still appease those clamoring for a truly big cyclocross tire. Winner? We think so. So does everybody else. Don't believe us? Just ask. Everybody's irrefutable favorite, 'nough said.