I believe it should be 'Tyre Safety'
Found this report on tyre safety in regards to age.
Interesting report. Waffles on a bit (it is American ) but a must watch for all that own a vehicle.
I don't know if it applies to bike tyres but you never know.
(I have a vision of many people checking tyres very shortly)
http://www.youtube.com/watch?v=mDgSk5xWkrI
Its all the dyno tuning they do...lol