Two tires in one - fast rolling center section paired with aggressive outer edges for cornering control. Knobs designed for seamless transitions from center to edge. Two tires in one - fast rolling center section paired with aggressive outer edges for cornering control. Knobs designed for seamless transitions from center to edge. DTC - Dual Tread Compound is a combination of two different rubber compounds, L3R Pro (center knobs) and Stick-E rubber (corner knobs)