What is the role of the sidewall marking on a tire?

The sidewall marking on a tire serves several important functions, primarily focusing on providing critical information regarding the tire size and specifications. Each tire has a specific alphanumeric code on its sidewall that indicates the tire's width, aspect ratio, construction type, diameter, load index, and speed rating.

This information is essential for ensuring that the tire is matched appropriately to the vehicle and complies with manufacturer guidelines. Having the correct size and specifications is crucial for maintaining safe handling characteristics, optimal performance, and accurate speedometer readings.

While other options may display information like manufacturing dates or warranty details, the primary purpose of sidewall markings is to give necessary data about tire sizing and capabilities. This ensures that technicians and consumers can make informed decisions about tire selection and maintenance.