5 parameters on car tires that drivers need to know

Tire size specifications usually start with 1 or 2 letters, for example P or LT. These letters tell us what type of vehicle or conditions the tire is intended for... For example LT235/75R15 104/101S/C). This is a tire for light trucks, cargo pickup trucks, heavy trucks with a load capacity of 750kg to 1 ton. In addition, it can be used for some SUVs or Full-size Vans.

It is the contact surface area of ​​the tire with the road surface. The parameter is located right after the tire type symbol. It is the distance from one sidewall to the other sidewall of the tire measured in millimeters. For example, P 225/45R17 91V, this is a tire with a width of 225mm. The width of the tire can be converted to inches; a P225 tire corresponds to a width of 8.86 inches.

For example, P225/45 R17 91V. This is a tire with a radial structure (symbol R - abbreviation of radial). According to statistics, 98% of current tires have a radial structure. In addition, there is a diagonal structure (symbol D - Bias). In addition, we can see the symbol B, the structure is similar to the diagonal structure but has an additional layer of reinforcing belt under the tire tread.

For example, tire P225/45R17 91 V, the letter V indicates the maximum speed limit that the tire can operate at, which is 220km/h. In addition, there are other indexes from M to Z corresponding to maximum speeds from 130 to more than 240km/h.

Since 1991, all tire manufacturers have been required to clearly state the load limit on their tires. For example, a P225/45R17 91V tire has a load index of 91, which corresponds to 615 kg. Typically, load indexes range from 71 to 110, which corresponds to a load of 345 kg to 1060 kg...