Working in the automibile industry I know about car tire shelf life,. I just didn't realise/thought about that I was riding on a 8 y/o tire.
The thing is that my old bianchi 1984 is presently on old vintage michelin tire I bought on the internet (don't really know how old they are) but they are looking very good and they perform very well.
On the DOT number of every car tire you have the month and year of fabrication but do you have the same on bike tire?