The specification details the correct dimensions of the tires designed for use on a specific vehicle model and year. For the 2016 Toyota Corolla, this comprises a series of numbers and letters that indicate aspects such as tire width, aspect ratio, and rim diameter. As an example, a common specification might be 195/65R15, where 195 represents the tire width in millimeters, 65 is the aspect ratio (the height of the tire sidewall as a percentage of its width), R indicates radial construction, and 15 signifies the wheel rim diameter in inches.
Adherence to the recommended specification is crucial for maintaining the vehicle’s handling characteristics, ensuring accurate speedometer readings, and optimizing fuel efficiency. Furthermore, using the correct specification contributes to vehicle safety by ensuring that the tires can properly support the vehicle’s weight and provide adequate grip. Historically, manufacturers have meticulously determined these specifications through extensive testing and engineering analysis to provide the best balance of performance, comfort, and safety for the particular vehicle.