Sorry I'm responding to this late. I just saw it on my user CP. No, I did not do it with the factory tire setup. Car is garaged for winter and my goal is to obtain the stock Goodyear Supercar tires and some OEM or replica black 10-spoke wheels by spring. I feel that this suspension upgrade puts more stress on the stock Pirellis than they are designed for, and I have read that you can blow the side walls on the Pirellis if you are running it hard on a track. Again, sorry for the late response and hope this helps.