But what is the permitted old age when you buy a car tire? This is one of the frequent questions that everyone is asking when buying new tires. The answer of this question is important for the buyers and sellers. Buyers want quality products, and the sellers have big problems to explain that the tires stay fresh even if they are with years on the shelves. The age of the tire in the moment of buying is nowhere regulated by the law, because the status of the tires depends on right stocking. Because of that are written only the conditions of the stocking and the latest day after which the tires mustn’t be sold. As the tires age, the compounds of the rubber dry out and break down, so this increases the accident risk due to treat separation. An old and unused tire looks just like new tire, and some sellers have been caught selling “new” tires that indeed are 8-10 years old. Those tires that are exposed to UV rays break down quicker that the others, so be careful with the tires that are stored outside. There is not any study that determines the average tire shelf-life, but some expert will agree that any tire that is 6 years or older should be discarded, even if it has never been used on the road before.
To tell how old a tire is, just look for the tire identification number that begins with the letters “DOT”. That label can be found on the sidewall of the tire close to the rim. On some old tires, that number may be on the inside sidewall, so you will have to crawl underneath the vehicle to find it. The last four digits are the date code. The first two numbers show the week and the last two numbers show the year when the tire was produced. In the photo here, you can see that the date code is 3507 that means that the tire is made during the 35th week of 2007. Tires that are manufactured before 2000 use only number for the year. We hope that you won’t run into any of those. So, the next time when you buy a new tires, be sure to check the date code. That will help you to know the tire life and whether or not you are really getting what you are paying for. [mashshare]