Tire dating age

Tire aging and road safety
Contents:


  1. Tire Brands
  2. Tire Safety: Expiration Dates
  3. Switch now to summer tires from Continental.
  4. What is a tire date code and where do I find it? | xiruhivuhy.tk

To wait any longer than that is a gamble with tire integrity and is risky for drivers.

So what can you, as a driver, do to protect yourself? For new tires, the code is always 11 characters.

Tire Brands

However, tires manufactured before the year have a character code. Expiration dates for tires manufactured before were based on a year scale because the expected life-span of a tire was 10 years. Current guidance suggests that tires should be expected to last a maximum of only six years. A tire manufactured-date code, shown in the yellow box, may appear on the outside of some tires.

The character DOT code, shown in the red box, appears on the inside of tires. Recently, some tire manufacturers have begun to stamp partial codes on the outside of tires facing away from the vehicle so that checking the date does not necessitate removing the wheel.

Tire Safety: Expiration Dates

These last four digits of the DOT code represent the manufacture date of the tire. The last two digits refer to the year the tire was produced, and the first two digits identify the week number within that year. The tire shown in Figure 1 was manufactured on the 36th week of the year That tire was on a trailer that had been sitting in a field unused for 10 years, and it showed signs of dry-rot cracking. It is unclear whether trailer tires should be replaced every six years since they do not receive the same daily punishment as automobile tires.

However, automobile tires should be replaced every six years. The majority of people who take the gamble of keeping outdated tires do so to save money. Driving on outdated tires is risky not only for the driver of the car having those tires but also for other drivers. From the year 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.

Switch now to summer tires from Continental.

For instance would signify the 24th week of No matter what decade it is, anything with a 3 digit date code is too old and would definitely be an unsafe tire to use. Below are several examples showing how to check the date code and what happens when the tires get too old. All of these tires just happened to be handy at the time of this post. Here is an example to show how to check the date code. This is a new tire of course. Notice the picture on the left, you can only see the OT of DOT, but notice there are 7 letters and numbers and then the date code "" means that this tire was built in the 49th week of The right side picture is the same tire's DOT code on the other side.

Not only is the date code missing, but the last three digits are gone too.

What is a tire date code and where do I find it? | xiruhivuhy.tk

This is actually pretty common, but more tires would have all 7 digits on the other side but not the date code. Notice the first tire's date stamp reads so this tire was built in the 42nd week of The second tire has an extra circled set of digits after the date code that read , that is not the date code, the date is the one right at the end of DOT number that reads So this tire was made in the 12th week of or You do have to watch out for these other numbers, again, only the numbers directly at the end of the DOT number are the date code.


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Lastly, here is another example of pre dated tire, and what happened to it. This one is stamped having been made in the 14th week of This one would have blown the tread off soon had it not been removed. Notice that it also still has good tread.