Generally speaking, the front and rear wheels of Porsche Kaman have different tire sizes, so do the front and rear wheels. The tires used in the front wheels are slightly narrower and the tires used in the rear wheels are slightly wider, which can better meet the operating requirements of different parts of the vehicle. According to different models, the specific tire size may be different. It is recommended to consult the vehicle instruction manual or consult a professional automobile maintenance center to obtain accurate information.