If you ever feel like you’re… free, take a look at a certain car tire, and you’ll find up to 3 pieces of code printed on it.
In fact, basically, no one cares what that sequence of numbers does. Tires are meant to be fitted to the car, and once fitted, just drive away, as long as it doesn’t blow up.
The words have been printed on the tires, which means that the words must mean something.
But they have words printed on the tires, which means that the words must mean something. And if you want to learn, the information they bring is also very interesting. Let’s take a few examples and analyze.
Basic information is printed on the tire.
For example, in the image above, the code sequence is P215/65R1598H.
The second line of code on the tire also carries extremely important information that begins with “DOT” and the tire number – TIN (Tire Identification Number). For example: DOT 4B08 4DHR 2910.
DOT stands for the Department of Transportation, certifying that the tire has passed the inspection of the Department according to the safety standards for motor vehicles. After the DOT is the tire number with code groups.
The first group of codes (4B), with two to three characters that can be numbers or letters, is the code of the tire factory. The second group of codes (08), with no more than two characters, specifies the tire size. The third group of codes (4DHR) of no more than four characters are optional codes set by the manufacturer according to the size or characteristics of the tire. To consumers, these three groups of codes are not as useful as the last group.
The last group of codes (2910) tells us the production time of the tire. This four-digit writing is used for tires manufactured after 2000, the first two numbers indicate the week, the other two numbers indicate the year.
As in the example is the 29th week of 2010.
The Uniform Tire Quality Grading (UTQG) is a Uniform Tire Quality Grading System established by the US National Highway Traffic Safety Administration (NHTSA), based on 3 standards:
However, it should be clarified that each brand will have its own standard, so Treadwear will only be used to compare tires within the same brand.
In the US, any tire sold must have a heat resistance rating of C or higher, which means at least a maximum of 85mph.
You see, the tires alone have a lot of interesting information that we don’t know. That is to say, knowledge is boundless, and only by studying and cultivating can we renew ourselves.