Switchback Hill 650B x 48Description The Rene Herse Switchback Hill is the original supple tire that started the Road Plus segment. Inspired by the legendary Oregon Outback and named after the first climb of that epic 360 mile gravel ride race, the Switchback Hill remains the lightest, fastest and most comfortable ultra wide 650B tire. On the Oregon Outback route, the gravel is quite loose in places, and the extra flotation of the Switchback Hills gives you more speed and