To be honest, car tires don’t have a hard and fast day, not like a bag of popcorn in your pantry. Instead of having a set date, each tire has a number printed on it that indicates the week and year it was manufactured. For example, if you find a code on your tire that says “3019,” that means the tire was manufactured in the 30th week of 2019.
The National Highway Traffic Safety Administration recommends that all tires be replaced after five to six years of continuous use. However, individual manufacturers can be a little more relaxed about 10 years. In any case, the point is that it is not good to continue using the same tires if you have been using them for more than half a decade. The consequences of doing so may not be visible, but when they are, they are visible and retributive.