How to Identify Car Tire Models?
2 Answers
Tire specification numbers indicate the model of the tire. The tire model refers to the international standard tire code, usually located on the sidewall of the tire, and includes the width of the tire cross-section in millimeters; the aspect ratio (percentage of section height to section width) in millimeters; the diameter of the wheel rim in inches; and the load index. These are the meanings represented by the tire specification numbers. For example, 185/60R1491V is a tire specification, where the numbers mean: the wider the tire, the larger the contact area with the ground. When driving, this will increase the friction between the tire and the road, which is not favorable for the car's fuel consumption. Of course, there are two sides to everything. By increasing friction, not only does it enhance wet road grip performance, but it also improves the tire's drainage capability, thereby increasing driving safety in rainy conditions. The number 60 represents the aspect ratio, which is the percentage of the tire's cross-section height divided by its width. A higher value means a thicker tire, resulting in lower maneuverability but increased comfort.
I first learned to identify tire models a few years ago when changing tires. The sidewalls of tires are engraved with a series of numbers and letters, such as the format 205/55 R16. Here, 205 represents the tire width in millimeters, 55 stands for the aspect ratio—the percentage of the sidewall height relative to the width, R indicates a radial construction tire, and 16 is the rim diameter in inches. When parking, I usually squat down to inspect the tires, ensuring there’s no wear or cracks, and take a photo with my phone for easy reference. The driver’s side door frame also has a sticker displaying the recommended tire model. Mismatched tires can affect grip and fuel efficiency, even causing instability. A friend of mine ignored checking the model and ended up with severe shaking at high speeds after fitting the wrong tires, forcing him to visit a professional shop for adjustments. Regularly checking these details not only avoids trouble but also enhances driving safety—especially before rainy seasons or long trips, an extra glance is always beneficial.
