I just bought a new Pirelli diablo tyre for the front on my Ducati. I checked the date on it and it was 8 years old! Sent it back under EBay returns and got another from a different seller, Demon tweaks which was an acceptable 1 year old. Always check the date on the tyre. Anything over 5 years old is junk and if it wasn't stored correctly the life can be even shorter. You can feel the stickiness of a new tyre compared to the glazed hardness of an old un.