The code "P215/65R15" is a tire size designation that provides important information about the tire's dimensions and specifications. The "P" indicates that it is a passenger vehicle tire. The number "215" represents the tire's width in millimeters, while "65" is the aspect ratio, showing that the tire's height is 65% of its width. The "R" signifies that the tire is of radial construction, which is the most common type used today. The final number, "15," refers to the diameter of the wheel rim in inches that the tire is designed to fit. This means that the tire is intended for a rim that is 15 inches in diameter. Understanding this code is essential for selecting the right tires for vehicles, ensuring proper fit and performance on the road.