Well I think you are partly right. Here is the tires I have Continental Touring Contact, website does not indicate they are run flat. The dealer told me they were and that was why there is not a spare? Also Discount Tire told me they were run flats. http://www.conti-online.com/generato...master_en.html
The Continental website does mention run flat tires (SSR) so maybe they do make some but not for Crossfire. My car has the tire option P225/40ZR18, P255/35ZR19 ASP Tires $185 whatever that is.