AV54, 150/60-17, Radial, Rear, 66H 90% on-road/10% offroad. The Avon TrailRider Dual Sport Tires High-tech construction and next generation compounds deliver superb grip and handling. Features a super-rich silica compound using the lastest technology to enhance wet grip. Multi-compound treads on radial rears to enhance mileage and grip. Interlocking three-dimensional points hidden in the sides to improve stability and grip, limit tread flex and allows the tire to warm up quickly.