Yes I know. When I used them in 2012, the manu date was 2008. 4 year old tyres still gripped like mad and lasted 1.5 years on a myvi. Now 2015 don't know when the manu date will be but 4-5 years still ok la for extreme performance tyres. Galvanization would've been complete and the adhesives should still be in good condition. The synthetic rubber / natural rubber blend on the other hand I dunno la.
VR2Turbo is the taiko of tyre shops. Everywhere we go with him the shop fellas wave at him and last time when I went with him to change tyres the shops opening price was straightaway the lowest possible price they could offer. No need to bargain even.