My original OEM's were fine, no complaints. Lasted 26.5k. The replacement one's I had bought and stored are not fine. When I got them I put tire dressing on them put them in black garbage bags and stacked them up, they sat dormant 2.5 years.
I had them installed by the dealer. 2 of them will not balance up (out of round). They did their best to balance them and when it was test driven, I am told the wobble was noticeable. They were removed and worked with until the tolerance is very close but not dead on. The guy did a good job as of now I get no wobble but I do feel flat spots when the car sits a few days. I never had that with the tires that were on the car originally. These tires I have now came off one of the train wrecked GTO's and are OEM tires. I am closely watching these, so far, so....so so. I asked my service writer, what are my chances of these tires being replaced under warranty, and was told they could try but they did not come on the car from new. Needless to say, my next set will not be the B.F.'s.