I hear you there!! I put Kumho ASX's on my C5,There will never be another set of GoodYear's on my car!!!! I've got 16,000 miles on them and still have over 8/32nd. tread left,still Round and Quiet and I can hear my radio!!!! I'll get 40,000 or better out of them!!! $592.00 delivered with road hazard, Tire Rack!!junk!!Call a tow truck. I have had 95,98,2000 and now the 05. All came with run flats. I have always replaced them with non run flats. Actually (knock on wood) never had a flat once I changed them to non run flats. Usually get better grip and handling with non run flats. They have always been a smoother ride when compared to the runflats.