New 2011 Tire Build Dates - Question

[NMRN]

How unusual is it that the OEM (??) tires on my new 2011 Base Coupe have three different build dates? Car was built in May 2011; two rear tires are dated 1211; one front is dated 4510 and the other front is dated 0811. What's going on with that?

Thanks

 

[froggy47]

That seems pretty odd to me, but it shouldn't make any difference.

 

[catbert]

Should be pulled out of the warehouse first in - first out, but it looks like Goodyear found an old one to ship. They're produced in batches, so rarely are the tires really fresh for limited production tires like the Vettes.