Tires and Old Age Don't Mix

This tire is about 15 years old. It was inflated to 34 PSI and was the left front tire on a 1960 Chrysler 300F. The tire had very few miles on it; perhaps one thousand or so. Looking at the depth of tread and the lack of age marks, I would have said this tire had lots of life left in it.
The car had been in cold storage in a dry garage for some 4 years. One day I noticed the car was sitting at an odd angle, and this is what I found.
There is plenty of tread left on the tire and no curb damage or any other warning sign that disaster was close at hand.
I think the failure was due to old age. Imagine if this had happened at 60 MPH.
I'll be keeping fresh tires on any cars that are driven.