The specification signifies the proper dimensions of the rubber element designed for a particular car mannequin and yr. For the 2012 Toyota Highlander, this worth dictates the suitable diameter, width, facet ratio, and cargo index mandatory for secure and optimum efficiency. An instance could be P245/65R17, a typical designation discovered on appropriate replacements.
Appropriate dimensions are important for sustaining speedometer accuracy, making certain correct dealing with and braking capabilities, and preserving the car’s meant journey high quality. Deviation from the desired dimensions can negatively affect gasoline effectivity, stability management methods, and the general security efficiency of the car. Traditionally, producers set up this specification primarily based on in depth testing and engineering issues to ensure optimum car operation.