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How do you read tire date codes?
The last four digits of this code tell you when your tire was manufactured. The first two numbers indicate what week of the year it was made (out of 52 weeks per year), and the second two numbers represent the year. For example, 5200 would reveal that a tire was manufactured during the 52nd week of the year 2000.
How do you tell the year a tire was made?
The chronological age of any tire can be found on the tire sidewall by examining the characters following the symbol “DOT”. The last four numbers identify the date of manufacture of the tire to the nearest week. The first two of these four numbers identify the week of manufacture (which range from “01” to “53”).
How do you decode tires?
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 3 digit tire date code?
The first two digits of the code represent the week of production during the year (from 1 to 52). The second two digits represent the year of manufacture. If your DOT code is a 3-digit number, it means your tire was produced before 2000.
Do tires have manufacture date?
The U.S. Department of Transportation (DOT) number stamped on the tire’s sidewall contains a date code that identifies the age of your tires. Tires built from 2000 to the present use the last four-digits of the DOT number to identify the week and year of manufacture.
How do you find the age of a tire?
To find the age of your tire, you can refer to your tire’s DOT Identification Number, which is stamped on the tire’s sidewall. The last four digits of this number indicate the week and year the tire was built. Tires contain anti-aging properties that are mixed into their rubber compounds.
What is the maximum age of tires?
LESSON: There are no hard and fast “expiration dates” on tires, but because rubber begins to crack and deteriorate over time, most experts suggest that eight years is the maximum safe life expectancy of a tire.
How to determine tire age using dot number?
The age of the tire can be determined by checking the tire identification number on the sidewall of the tire , which begins with the letters “DOT”. The last four digits represent the week and year the tire was manufactured. On newer model tires, the tire identification number is on the outside sidewall; older models will have the identification information on the inner sidewall.
Do tires harden with age?
Here’s what happens as tires age. Tires are subject to a process called oxidation, whereby oxygen interacts with compounds in the rubber causing them to harden and eventually become brittle. As the rubber oxidization increases over time, tire performance decreases.