The Strada has been Challenge's efficiency tire for years, and it rides like it: a supple, rounded casing that takes the edge off rough pavement without giving up control or rolling resistance. Handmade in the PRO Series line, it pairs a Super Polyester casing with SMARTprime, Challenge's fastest tread compound to date. The Easy-Fit Shape moulding pre-forms the tire for mounting and inflation that doesn't fight you. For riders who want speed without punishing the ride, this is the one we reach for.