The specified alphanumeric code designates the dimensions and specifications of tires suitable for a particular vehicle model and year. For the 2017 Toyota Corolla, this code ensures proper fit, load capacity, and performance characteristics. An example includes a sequence like “195/65R15,” where each segment provides information about the tire’s width, aspect ratio, construction type, and wheel diameter.
Correct tire dimensions are critical for maintaining vehicle safety, fuel efficiency, and handling. Adherence to recommended specifications ensures optimal contact with the road surface, proper speedometer calibration, and avoidance of mechanical stress on suspension components. Historically, manufacturers have provided these specifications to ensure vehicle performance aligns with engineering design and regulatory standards.