Where to look and what does the speed index of a tire mean?

If you often have to use high-speed highways or if you are a fan of active driving, then when choosing new car tires, you should pay attention to what maximum speed the tire will be safe under operating conditions. This maximum speed is determined on the basis of test measurements carried out by the manufacturer and indicates what speed the tire can maintain for 10 minutes.

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Each tire has a speed index, indicated by a letter, and it is located after the tire size and load data, for example, in the form "195/65 R15 91T". To determine the meaning of a specific speed index letter, you can use a table that contains the most common indexes.

It is worth considering that the higher the speed index, the softer the rubber of the tire, which can improve traction, but also accelerate tire wear. For example, tires with a speed index of "V" wear faster than tires with a speed index of "T".

Remember that the speed rating does not indicate the maximum speed of the vehicle, but only the speed at which the tire maintains its performance. It is important to always comply with the legal speed limits of the vehicle and not to exceed them on public roads.