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I want to determine how old the tires on my car are. I understand there is an age code on each tire. But what if the age code is on the inner side? Is there some code I can use on both sides of the tire?

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The age code is only on one sidewall. There is no requirement that it be installed facing out. I have used a mirror to read the code when installed on inside. Tirerack.com has a good article on how to interpret the codes. There is no regulation concerning how many years should be left on a vehicle in the US. Some say 6 yrs max other say 10 years. I have heard that the UK has a 6 year max installed life limit.

  • Okay 2 of my tires are installed with code facing in - I still have to stick my head under the car with the mirror, right? – JHN Sep 1 '15 at 3:54
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You can see this question on how to decode the age of a tire.

Regarding how to read the code if it is on the inside of the wheel, Fred Wilson's answer should be adequate: use a small mirror and flashlight to locate the code and determine the age.

One thing which I have noticed is that some tire manufacturers (especially the less-reputable ones) will not print the manufacturing code on the tire, especially if there is no local legislation mandating them to do so. This is why it is a good idea to insist on seeing the code at the time of purchase.

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