Readers ask: How To Tell Date On Tires?

Is there an expiry date on tires?

The NHTSA (National Highway Traffic Safety Administration) says tires expire in six years. The British Rubber Manufacturers Association “strongly recommends” that all tires should be replaced 10 years from the date of manufacture and that unused tires should not be put into service if they are more than six years old.

How do you read old tire date codes?

Most DOT numbers have between 6 and 8 letters/numbers mixed, and then the date code follows that. From the year 2000 on, the date code has been 4 digits, the first two are the week of manufacture and the second two digits are the year of manufacture. For instance 2407 would signify the 24th week of 2007.

How old should new tires be when purchased?

… though it could have new tread, it is still an old tire. Tire Rack’s recommendation that a tire should be replaced ten years from the date of manufacture or six years from the date it is placed into service applies to spare tires, as well, so if your vehicle is six years old or older, it’s probably…

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How often should you replace your tires?

When the tread is worn down, tires lose traction during braking and won’t grip the road well when driving in the rain, ice and snow. But even if there’s plenty of tread left, tires should be replaced if they‘re too old, at least every six years.

How do you read a Bridgestone tire date code?

These letters are followed by a sequence of 8-13 letters and numbers that denote that tire’s manufacturing location, its specific size, and the manufacturer’s identifying code. The final four digits indicate the week of manufacture followed by the last two digits of the year of manufacture.

How do you read a tire code?

The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire’s width. The bigger the aspect ratio, the bigger the tire’s sidewall will be.

How do you read a tire DOT code?

How to find the DOT code?

  1. The first two digits of the code represent the week of production during the year (from 1 to 52).
  2. The second two digits represent the year of manufacture.
  3. If your DOT code is a 3-digit number, it means your tire was produced before 2000.

At what age are tires unsafe?

While there’s no federally sanctioned safety guidance on when a tire is too old to be safe, many carmakers recommend replacement at six years from the date of manufacture. Old tires have been the culprit in fatal accidents.

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Should I buy 2 tires or 4?

If you are looking to replace all-wheel drive tires, we recommend replacing all four at once. While it may be tempting to replace only two at a time, mixing new and worn tires can create a size difference from front to back, which can lead to damage to your vehicle.

How do you know if your tires are too old?

Here are a few ways to tell if your tires are getting too old.

  1. Storage. Many people store their tires in their garage when not in use.
  2. Temperature. Tread separations tends to occur at a more rapid pace in areas with warmer climates.
  3. Usage. Have your tires been properly maintained over the years?
  4. Wear and Tear.
  5. Actual Age.

Should I replace all 4 tires?

Is your car an all-wheel drive (AWD)? If so, most vehicle manufacturers and the Tire Industry Association (TIA) recommend that you always replace all four tires at the same time. That’s because the reduced diameter of the lower-tread tires causes them to spin faster than the new one.

Why do new car tires wear out so fast?

The OEM tires that came with your car can’t be replaced (which is a good thing) after they’ve worn out. And they will wear out much sooner than they should. This is because virtually all auto manufacturers specify very soft rubber which means they wear out too fast.

Is the penny test for tires accurate?

For years, motorists have been told the “penny test” is an accurate indicator of whether or not you need new tires. The test is conducted by sticking a penny head down in a tire tread; if you see all of Lincoln’s head, then you should change the tires. The one with an eighth of an inch of tread stopped in 300 feet.

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