What winter tire sizes fit the FF? I have these from my Porsche Turbo 245/35R-20 PIRELLI WINTER SOTTOZERO SERIE II 240, N0(PORSCHE) 295/30R-20 PIRELLI WINTER SOTTOZERO SERIE II 240, N0(PORSCHE) Any idea if this would fit?
Your 245 for the front is the same as oem so fitment shouldn't be a problem. The rear's sidewall has a lower profile so the it will fit but the overall diameter will be smaller, and the actual speed will be lower than what is indicated on the speedometer. Try the following calculator: https://www.rimsntires.com/specspro.jsp Of course, I am not sure if such a change in size will mess up the 4RM system on this car.