Where is the 3T index?
We can easily find the 3T index of the tire on the tire side. Among them, the wear index is TREADWEAR, the traction index is TRACTION, and the temperature index is TEMPERATURE. The initial letters of the three indexes are all T, so they are called 3T index.
How to view the 3T index?
First, let's look at the TREADWEAR index. The TREADWEAR index is a parameter that measures the wear resistance and service life of tire treads, and its standard level is expressed in specific numbers (the base number 100 represents the wear generated by a standard tire driving for 30,000 miles).
It should be noted that the wear index is only a reference value calculated according to the standard tire quality system, and does not represent the actual mileage of the tire. Specifically, a tire with a wear index of 300 represents a three-fold increase in its wear resistance compared to a standard tire with a base wear index of 100. It does not mean that the tire can travel three times the standard distance.
Currently, tire wear index is divided into three levels, with tires with an index between 160-300 being standard summer tires; tires with an index between 160-200 being high-performance summer tires; and tires with an index between 300-540 being all-season tires.
Let's take a look at the traction index. The traction index is a parameter that measures the grip performance of tires on wet and slippery roads. It is divided into four levels: AA, A, B, and C. AA is the highest level, indicating that it has the highest level of wet grip among similar tires. At the same speed, tires with AA level have a shorter braking distance and a faster braking time than those with C level on wet straight roads.
Specifically, AA grade has the highest wet grip, A grade has excellent wet grip, B grade is average, and C grade is only qualified.
Finally, we will look at the temperature index (TEMPERATURE). The temperature index is also known as the life index, which refers to the ability of tires to resist heat generation, and is related to the high-speed performance of tires. Continuous high temperature of tires can cause aging, shorten the service life of tires, and excessive temperature can also cause tire blowouts. It is divided into three levels: A, B, and C, with level A being the best. The higher the level of tire, the more it can reduce the heat generated by the tire during rolling, and the longer the service life.
Although tires are round, there are still significant differences between tires of different brands and specifications, so only by understanding these specifications in detail can we better choose the right tires for car owners.