The specified dimensions of the rubber that makes contact with the road for a particular model year of a minivan manufactured by Toyota are critical for safe and efficient vehicle operation. These measurements dictate the diameter, width, and aspect ratio of the tire, often displayed as a series of numbers and letters on the tire sidewall (e.g., 215/65R16). Correctly understanding this code is essential for sourcing replacement parts.
Adherence to the manufacturer’s recommended specification provides several benefits. It ensures proper speedometer calibration, maintains the intended handling characteristics, and optimizes fuel economy. Deviating from the recommended tire size can adversely affect these factors and potentially compromise vehicle safety and performance. The original equipment specification reflects engineering considerations related to load capacity, braking performance, and stability control system functionality.