The Nano 40c is built for speed, and it delivers. A 40mm, rounded profile and an elevated centerline provide enough volume for lower tire 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. Features a 60 TPI casing and is TCS (tubeless compatible system) ready.WTBs TCS (Tubeless Compatible System) tires feature the best of both worlds: they boast the ride benefits of a tubeless tire with the minimal weight of a race tire. This versatile system combines WTBs lightweight Race casing with a tubeless UST bead. TCS tires work great with inner tubes and easily adapt to tubeless when combined with WTB-approved sealant and rim strips (like Stans Tire Sealant).Also feature’s WTB’s DNA Dual Rubber compound: The centerline compound features 60a durometer rubber for fast rolling, precise steering and durability. The dense, slow-rebounding 50a durometer outer tread provides exceptional grip and shock absorbing properties.