Tire dimensions refer to the size specifications of a tire, which are crucial for ensuring proper fit and performance on a vehicle. These dimensions typically include the tire's width, aspect ratio, and diameter, often expressed in a format like 205/55R16. The first number indicates the tire's width in millimeters, the second number represents the aspect ratio (the height of the sidewall as a percentage of the width), and the letter denotes the tire's construction type, while the last number indicates the diameter of the wheel in inches. Understanding tire dimensions is essential for vehicle safety and efficiency. Using the correct size helps maintain optimal handling, fuel economy, and ride comfort. Additionally, mismatched tire sizes can lead to uneven wear and potential damage to the vehicle's suspension system. Always consult the vehicle's owner's manual or the tire placard for the recommended tire dimensions.