Just so everyone knows:
Within the tire industry, there is a common belief that any properly stored tire within 6 years of manufacture can be sold as "New". I say "belief" because I don't know of any data to support this - EXCEPT:
The tire manufacturer I worked for tested 3 year old tires out of their warehouse and could find no significant difference from freshly made.
So if you are concerned about the age of the tires you purchase, say so up front. It will save a lot of hassle later.