How to Determine the Size of Your Car Tires?
2 Answers
Typically, the specification of a passenger car tire is marked as ***/**R***, where all parts are numbers. Taking 185/60R14 as an example: 185 = cross-sectional width of 185 millimeters, 60 = aspect ratio of 60%, R = radial tire construction, 14 = rim diameter of 14 inches. Below are related introductions: 1. Support the full weight of the vehicle, bear the load of the car, and transmit forces and moments in other directions. 2. Transmit traction and braking torque, ensure good adhesion between the wheels and the road surface to improve the car's power performance, braking performance, and passability; together with the car suspension, mitigate the impact during driving and dampen the resulting vibrations. 3. Prevent severe vibrations in car components, adapt to the vehicle's high-speed performance, reduce noise during driving, and ensure driving safety, handling stability, comfort, and fuel economy.
To determine the size of your tires in inches, the method is actually quite simple, and I often check it myself during car maintenance. First, the inch size is printed on the sidewall of the tire, where there's a combination of numbers and letters, such as '195/65 R15'. In this example, the '15' in R15 refers to a diameter of 15 inches. You'll need to crouch down and look at the edge of the tire—don't worry about getting dirty, just wipe off any dirt with your fingers to see clearly. If the tire is severely worn and the markings are unclear, you can refer to your vehicle's user manual, which details the original size. Also, always remember this number when replacing tires, as mismatched sizes can affect traction and even lead to unstable braking. It's a good habit to check the size every time you wash your car to avoid buying the wrong new tires.
