What is the speed rating code on tires?

[Jeff]

Tire codes represent the tire width, aspect ratio, rim diameter, load index, and speed rating symbol. Here is some information about tires: 1. Introduction: The sidewall thickness of a tire is 5mm. Based on the carcass structure, automotive tires can be divided into pneumatic tires and solid tires. Most modern vehicles use pneumatic tires. Depending on the internal air pressure, pneumatic tires can be classified into high-pressure tires, low-pressure tires, and ultra-low-pressure tires. 2. Types: Low-pressure tires are commonly used in various vehicles. Pneumatic tires can also be divided into tube tires and tubeless tires based on their structure. Passenger cars generally use tubeless tires. Depending on the arrangement of internal cord layers and cushion layers, tires can be further categorized into radial tires and bias-ply tires. Radial tires are widely used in vehicles. These specifications are all marked on the tire sidewalls.