How to Read Tire Markings: Decoding 205/55R16 91V Understanding tire markings is essential when selecting the right one for your vehicle. Let’s break down the tire size 205/55R16 91V: Tire Width (205): The tire’s width is measured in millimeters. In this example, 205 means the tire is 205 mm wide. Generally, wider tires provide better grip and stability, especially on dry roads. Aspect Ratio (55): This number represents the height of the sidewall as a percentage of the tire’s width. Here, 55 means the sidewall height is 55% of the tire’s width. A lower number indicates shorter sidewalls, offering improved handling but slightly less comfort. Construction (R): The “R” stands for radial construction, which is the most common type of tire construction. Radial tires are durable, offer smooth performance, and are commonly found in modern vehicles. Rim Diameter (16): This number tells you the diameter of the wheel (rim) in inches that the tire is designed to fit. In this case, 16 means ...