Continental Ruban 27. 5" Wire Tire Trail on Weekdays, Pavement on Monday Riders who move between dirt trails and city streets need a tire that keeps up without a swap. The Ruban is a wide-profile, knobby 27. 5" tire that rolls fast on pavement thanks to an energy-saving center tread, then grips hard when the surface turns loose. Aggressive side lugs hold the line through corners on dirt, and the wire bead clincher setup keeps things simple and affordable for everyday riding. Pure Grip compound and the Shield Wall puncture protection layer handle the long-term demands of regular mileage, whether that's a park trail or a bike lane. Features Pure Grip compound activated silica-based rubber for grip and long-term durability across mixed terrain Shield Wall System finely woven cross-fabric puncture protection layer keeps rolling resistance low without sacrificing flat resistance Energy-saving center tread low-profile center knobs spin efficiently on hardpack and pavement Aggressive side lugs engage in corners on dirt and loose surfaces for confident control Wire bead clincher durable, easy-to-mount setup compatible with standard tubes E25 e-bike rated construction reinforced to handle the extra torque and load of e-bikes up to 25 km/h | Continental | Ruban 27. 5" Wire Tire 27. 5X2. 30 Sl Puregrip E25 | Rubber