Porsche GT3 wheels, racing wheels and winter wheels

The Porsche GT3 wheels as seen on the top pictures are 8" front and 10" rear while 18" in diameter. Fitted with 225/40ZR18 tires front and 285/35ZR18 rear.

For track days we are swapping the wheels seen on the left and middle pictures between this car and the Porsche 968 CS, they are Yokohama A032R "H-compound" street legal race tires in the dimensions 235/40-17 and 275/40-17 mounted on 7.5" and 9" lightweight magnesium Porsche 964 RS rims. The bottom right picture shows one of the winter wheels. Which are 17" Porsche 964 Cup design, 7.5" and 9" wide with 205/50-17" and 235/45-17 Pirelli Winter Assimetrico Ice tires.