What does 79T on tires mean?

2 Answers
RafaelAnn
07/24/25 9:01am
79 is the load index of the tire, with 79 corresponding to a load capacity of 437KG. T represents the speed rating of the tire. Here is some relevant information: 1. Specification model representation: Tires are important components of a car, and there are many specification models of tires, with different specification models suitable for different types of vehicles. The specification model identification is usually on the side of the tire, represented by a series of alphanumeric symbols, corresponding to the tire's tread width, aspect ratio, type, rim size, load index, and speed rating. 2. Speed rating: According to the different maximum speeds they can withstand, the speed ratings of tires can be divided into different grades from A to Z, with grade A further subdivided into eight different grades from A1 to A8. The further back the letter representing the tire's speed rating is in the alphabet, the better the tire's performance.
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McAlivia
08/11/25 4:31am
I've been driving for over twenty years and am very familiar with tire markings. The 79T you mentioned is a common combination of numbers and letters found on tires. The 79 refers to the load index, indicating the weight the tire can bear, specifically about 437 kilograms, which depends on your vehicle type—SUVs, for example, usually require higher load capacities. The T is the speed rating, representing a maximum speed of 190 kilometers per hour, suitable for city highways or occasional long-distance trips. If you exceed the load limit or drive too fast, the tire may wear out prematurely or even burst. When choosing tires, it's essential to match the specifications in your vehicle's manual. I once helped a friend change tires, and he opted for cheaper ones with a lower load index, which resulted in a flat tire on the highway. Regularly checking tire pressure and wear is also crucial—don't compromise safety to save a few bucks.
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