What is the tire load index?
2 Answers
Tire load index, also known as tire load rating, is a numerical code indicating the maximum load capacity that a tire can carry when operating at the speed specified by its speed symbol under standard conditions. The tire load index ranges from 70 to 109, corresponding to maximum load capacities from 335kg to 1030kg. Exceeding the tire's maximum load capacity won't cause immediate damage, but it will lead to tire fatigue. Prolonged overloading will shorten the tire's service life and may even result in tire blowouts in severe cases. Proper maintenance of car tires is crucial. It's recommended to perform tire maintenance after driving approximately 10,000 kilometers. Regular maintenance can effectively extend the tire's service life.
The tire load index is that numerical code on the tire, which tells you the maximum weight the tire can bear. For example, an index of 91 corresponds to approximately 615 kilograms. I always pay great attention to this because if the tire load capacity is too low, the vehicle could be overloaded when fully loaded with passengers or cargo, causing tire temperatures to soar during high-speed driving and increasing the risk of a blowout. When replacing tires, it's essential to ensure the index matches the requirements in the vehicle manual—don't opt for cheaper ones just to save money; safety should always be the top priority. Regularly checking tire pressure before driving is also crucial, as insufficient pressure reduces load capacity. Maintaining correct tire pressure ensures the index functions as intended.
