Who has a lot of miles if not quite 15,000?
I'm wondering how the tire tread is lasting on the stock tires.
My dealer said they were 36,000 mile tires.
I don't know if that was true, or just based on the 3 year, 36,000 mile bumper to bumper warranty.
If you have 15k + miles, your tires should be about half gone, or at least gone enough to measure and report back.