Super Tires Silicone tires, rounded outer sidewall, pr.  Diameter 0.792" (20.12mm) - Width 0.430" (10.92mm). 

Fits:

CB Design Insert Wheel 17x11mm
CB Design LMP 17x11mm

Scalextric Audi R8 LMS GT3, Aston Martin DB9, Cadillac Northstar LMP, Ferrari F430, Ford GT (old), Lamborghini Gallardo, MG Lola, Mustang FR500C, Nissan Skyline, Peugeot 908 HDi, Porsche 997, Porsche RS Spyder, TVR (new), Viper GT, START Pro Racing, START GT Endurance