The numbers on the sidewall tell you the tire size, the weight it can carry, and how fast it can go. Let’s take 195/60R14 as an example. 195 is the width of the tire in millimeters, and 60 is the aspect ratio, which tells you the height of the tire’s sidewall as a percentage of its width. The R stands for Radial, indicating the tire is of radial construction, and 14 is the diameter of the wheel in inches, so this tire is designed to fit a 14-inch wheel. You might also see something like 87W – 87 is the load index, telling you the load limits the tire can carry, and W is the speed rating, indicating the maximum speed the tire can safely handle. To find more information on this, you can check a load index chart and speed rating chart. So, those numbers are pretty significant— they’re the key to understanding your tire’s size, load capacity, and speed capability. So, now you know how to read tire sidewall like a pro!