Just got my wheels back from the tire shop after having metal stems installed for the pressure sensors. I decided to check the dates on the tires since they were off anyway. I was glad to see the two I bought in Beaumont last December after my dual blowout were made in June of 2006. But the other one...which I had been running on since the same incident in December...was from late 2000
It must have been the original factory spare. I am not exactly sure how that all worked out since I changed a tire in July 2005 pre-emptively (I gouged a chunk out of the sidewall on a sharp curb in Memphis). But, looks like I am definitely on borrowed time on that one. I put it on as the spare until I can get a new one. I'll check the date on the one I buy!