Yeah mika I don't get it. It would be one thing if I spun the tires a lot but I'm pretty conservative. I doubt seriously I'd get 15k out of the rears. Now my car was made in May of 04 and not delivered to me until July of 05. It sat on a lot for quite some time. The car had 300 miles on it when they brought it down to Maryland from PA. Only thing I can guess is that they were 300 hard miles? The wear is even across the tire so its not an alignment issue. And yes they are an expensive tire to replace but that will be next spring and summer's problem.
Pat