Just saw this thread, so I may be too late to be of much help.
If the car has 32K on it, I can guarantee you that those are NOT the original tires. 20 to 22K is all you can expect out of the OEM tire. The wear pattern doen't look too bad so I'd guess you have a tread separation issue. Looks like the tire has had a few too many heat cycles. Maybe it was run low at one time and you're just now seeing the results. I'd show the tire to GoodYear and see what they say, they just might prorate the tire for you. As mentioned before, get a new set and then get it aligned by somebody with a Hunter Laser system.
FWIW, I'm headed to Ruf Auto Centre in Carrolton tomorrow to have them check the alignment on my 2010 Z06 just as a precaution. They did my 08 and that puppy was a stable as a rock @ 140.
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