Nashbar SCR with Silverback Protection Wire Bead Road Tire. Choose a tire worthy of ruling the asphalt jungle courtesy of the Nashbar SCR with Silverback Protection wire bead road tire. Flats are truly the bane of any road rider's existence, but the signature Silverback Protection helps keep punctures to an absolute minimum. Not only is there a Kevlar belt beneath the tread, there's also a tough layer of bead to bead nylon for cut resistance. The tread compound is perfect for stacking up high mileage and the smooth center section ensures low rolling resistance.