With all the discussion on tires on here lately, I thought you might be interested in how to tell when a tire was manufactured.
You may have caught 20/20 a few weeks ago on the subject. It is a code that is on the tire sidewall (inside or out). It is a depressed elipse (oval) shape with three or four digits. Three if before the year 2000 and four if it is after the year 2000. The first two digits are the week of the year and the last one or two are the year.
Example: 227 Twenty second week of 1997.
Example: 2207 Twenty second week of 2007.
Here's an article and pic to help:http://www.tuninglinx.com/html/car-tire-date-code.html
The feds are trying to regulate tires not be sold older than six years. I do know from experience that older tires do fail. I lost the skin from the RF radial on the Galaxie doing 75+ on I29 a couple years ago. WOW, what an attention getter. Bout needed clean shorts. Jumped lanes and wiggled a bit, but got her stopped. The tires had over half the tread, no weather cracks, were stored inside 99% of their lifetime, but were 16 years old!
I'm guessing that 6 years might be a little short, but I know I'll never go longer than ten again. I would guess if they are in warm storage and not mounted, or no weight kept on them if inflated, tires should last longer than 6 years. How many of us store our summer drivers on stands with the tires off the ground?
Good for a little thought and information.