Tire Load Index and Speed Rating?

[SanBrady]

Following the size parameters of an automotive tire, there is typically a numerical+alphabetical parameter, such as 91V, 105V, 96W, etc. The load index of a tire refers to the maximum load capacity that the tire can bear when inflated to the specified pressure. It is usually represented by a number. For example, 91 indicates a maximum load capacity of 615Kg per tire, 96 indicates 710Kg per tire, and 105 indicates 925Kg per tire. However, this does not mean that the tire will immediately fail if it exceeds this maximum load capacity, but prolonged operation under such conditions is not permitted. For instance, using tires with a load index of 91, each tire has a maximum load capacity of 615Kg, resulting in a total load capacity of 2460Kg for four tires on a vehicle. If the total weight of the vehicle exceeds this value, the tire deformation increases significantly. Prolonged operation under such conditions generates more heat, ultimately leading to tire fatigue damage, reduced lifespan, or even structural failure, which may cause a blowout accident.