What does the tire load index mean?
2 Answers
Tire load index, also known as tire load rating, is a numerical code indicating the maximum load capacity a tire can bear under specified usage conditions. The tire load index ranges from 70 to 109, representing maximum load capacities from 335 to 1030 kilograms. Exceeding the tire's maximum load capacity will not cause immediate damage, but prolonged overloading can lead to tire fatigue and shorten the tire's service life. It is recommended to inspect tires daily, primarily to check for any debris stuck in the tread, as these can affect the tire's lifespan. When parking for extended periods, avoid leaving the car outdoors to prevent sun exposure, as prolonged sunlight can damage the tires and cause aging.
The load index of a tire indicates the maximum weight the tire can bear, with each number corresponding to a specific weight in kilograms. For example, 90 represents 600 kilograms. Having worked as a mechanic for over a decade, I always emphasize this value to customers when changing tires, as it directly impacts driving safety. Ignoring it and overloading can lead to excessive tire pressure, increasing the risk of blowouts and accidents. You can find this information on the sidewall label of the tire or in the vehicle manual. It's advisable to regularly check that it matches your vehicle model. When purchasing new tires, avoid opting for cheaper options with a low index, as they pose significant hazards at high speeds. It's best to develop a habit of having a technician measure and verify that the load and index align during every maintenance check, ensuring safe travels for you and your family.
