Ok I've been OUT OF THE LOOP for 4 years. Just bought another wing and it has a Bridgestone Run Flat, haven't looked at which one and maybe Glockjock can chime in but it is a SQUARE EDGE tire none the less. I need to order a new tire and would PREFER a RUN FLAT with ROUNDED Edges on it. My last CT was the Kumho and it was awesome and I need something like it in RUN FLAT? Any help here?