The NSR Classic Rear 21 x 11 Supergrip New for 16" Dia Wheels (Porsche 917) are made for 1/32 scale slot cars. The right wheels and tires make a big difference in grip, consistency and lap times.
Product Details
NSR EVO classic rear 21X11 supergrip new for 16″ dia wheels (Porsche 917) – 4 tires / package
Tire and wheel options & original equipment cross reference by car model : PDF