Much talk is being done about at what age should a tire be retired (no pun intended…) and at what age is a new tire not worthy of that “new” title and should be scraped even before use.
Every country has it’s own rules and regulations (the U.S. is still deliberating on it’s own) and even some of the manufacturers have there own recommendations. You should check what your local instructions are, but a good number is that a tire shouldn’t be sold 6 years after it was made and should not be used 10 years after made.
You may think the numbers are far from reality – in that case I urge you to check your tires, you may be surprised. It was, and maybe still is, common to sell tires 7 years after manufacturing – as brand new!
An old tire may lose its elasticity and durability depending on the conditions in which it was stored – the sun rays, presence of oxygen or air and other factors will deteriorate it’s condition. So, regardless of tread depth and other attributes your tire may be over the hill. For the same reasons your spare tire should be kept in the car or covered if mounted outside.
Check out the clip in this link for a more thorough explanation –
Well, now you should ask yourself how can you know the date your tire was made…. On the tire sidewall you get a lot of info, and the date is part of it. Since the year 2000 the date appears in the way shown in the image below (from tirerack.com), just remember that the year is made up of 52 weeks..
|In the example above:
DOT U2LL LMLR 5107
|51||Manufactured during the 51st week of the year|
|07||Manufactured during 2007|