Indoor and outdoor asphalt, concrete, and clay surfaces are the norm for parking lot racing and the new item from JConcepts makes performance even stronger. Released as a standard bead mounting diameter, the JConcepts Smoothie 2 is pre-mounted on the #3472 Shuttle wheels. The carefully profiled slightly thickened tire carcass rolls through the turns with efficiency while the maximum smooth surface area grips the specialty surfaces like no other.