Calandra Racing Concepts 1510 F1 ProMount Wheel (4) NIB

Many of currently available wheels for F1 are based on the Tamiya foam tire wheel. The foam tire wheel from Tamiya is a well designed and produced wheel. However, it was DESIGNED for FOAM tires, with no centering ribs or mounting guide ribs for the rubber tire bead. When rubber tires started becoming popular, these foam wheels were because they were readily available, despite not being designed for rubber tires. And while they worked OK, there was plenty of room for improvement.