When it comes down to choosing tires for these cars, all sizes in all models are not necessarily available. I'm narrowed down to either Michelin Pilot Super Sport or the Firestone run flats. Lots of guys are happy with the Michelins and I've heard of some happy with the Firestones. Anyone have any advice/info to add. I'm not tracking the car and want some decent tire life. The Firestones have a 500 rating and are a little cheaper than the Michelins although not enough to make much difference in the final price. I will be running run flats because I have never gambled and won at anything.