After running 2 sets of Goodyear EMTs on a '98 C5 and a set on a '04 C5 I had hopes of a better EMT tire on the C6. This EMT Supercar tire grips like no other tire I've driven but then it went the way of the first 3 sets of EMTs. Noisy and cupping on all 4 tires. Less on the rear as they have a tendency to be trued up by applying abrasive trimming on acceleration.
As in the past I chose not confront the nodding heads that apply the GM/Goodyear warranty and replaced the tires with non-runflats. Being aware that you can't reset the new sensors I have in the new tire/rim set without an expensive transmitter I stopped by the dealer and had them reset the sensors. They said that it wasn't a warranty issue and charged me $36 for .50 hour of work. Takes 3 minutes if you're on crutches. Now I'm just a bit hot and confront them about the tire problem and that they were the ones responsible for the tires being the crap that they are and remind them that they are the one that has been offering free service to get customers. In other words your tire sucks or your service is not much good. I took the tires, still mounted, in for their inspection and after a snappy 3 week decision they said they would replace them. They did note that the tires were very expensive and I wonder where they have been all these years. Told them if they think the tire are expensive they should have their car serviced there.
Now I'm wondering why they would replace the tires? Does GM know that this tire is only good for the track where you rip the front tread off on the corners and the back off on acceleration? They were run 15,000 miles and were determined replaceable by the dealer and/or Goodyear, not sure which. Never will get the straight scoop from either and just wanted to make everyone aware of what can happen with the Goodyear runflats.
Note that in the past I run the non-runflats at 2/3 PSI higher to compensate for the less rigid sidewalls, the Dunlop's I'm running at
29 cold and they go up to 34 hot and become a bit harsh, still a good contact patch at that pressure. Smooth tire, quiet, and good grip with a tread that allows me to run in rain and snow, if need be, on the long trips I make.