There is a 4 digit number at the end of the DOT code on the tire. It will say DOT then have some specifications, with the date code at the end. The first two digits are the week, and second two are the year. Their shelf life is usually considered to be no more than 10 years at the most. Dunlop's are good tires. I went with a Shinko Tour Master to replace my rear tire, since they were already on the bike and it seemed to ride just fine. They are a budget tire and I have read mixed reviews about them, but so far I have not had any problems, other than the rear only has 5000 miles on it and looks like it is ready for a change.