Nano light fast rolling the nano 40c is built for speed and lets just politely say it delivers a 40mm rounded profile and an elevated centerline provide enough volume for lower tyre pressures and a smoother ride while still reducing drag and rolling resistance this makes for an all out gravel destroyer that can still appease those clamoring for a truly big cyclocross tire winner wtb and wiggle think so so does superhuman beyond endurance athlete jay petervary tubeless compatible syste