Cedar GRV - 700×40CSmooth center, rugged sides tread, suitable for mixed terrains, 700x40C gravel road bike tire Cedar's tread pattern adapts to complex road conditions. The center of the tread is a smooth flat surface, with raised knobs extending from both sides. This allows for high speed racing on smooth roads, while the side knobs ensure strong grip and control when encountering rough gravel and mud. Cedar is particularly suitable for mixed urban and rural terrain.