Tires: tire expiration date, Tire Serial Coding

Question
I bought 4 new tires yesterday and I'm trying to determine when my tires were manufactured.  On two of the four tires is "DOT 7 3 8 K".  I'm not sure when they were manufactured and what the K stands for.  Can you help?

Answer
Marley,

I explain this in detail here:

http://www.barrystiretech.com/dotcoding.html

Obviously, what you wrote doesn't fit the coding structure.  Perhaps only the first 4 digits are present on the side you looked at (meaning you need to look on the other side).  If that is true, then:

73 = JIUH SHUENN ENTERPRISE CO., LTD., TAICHUNG, TAIWAN, CHINA

and

8K = ....... well, as I explain there isn't a universal code, but it might mean:  P245/45R17.

So look at the other tires.  see if any have the coding structure I mention on the web page.  If not, look on the other side.