Deciphering Tire Numbers: Understanding the Language of Tires

When it comes to understanding tires, the series of numbers and letters on the sidewall can seem like a cryptic code to decipher. However, each element serves a specific purpose in describing the tire's dimensions, construction, and performance capabilities. Let's break down these numbers and letters to demystify the process of reading a tire.

Decoding the Numbers:

195/55 R 16 87 V

1. 195 millimeters: This figure represents the nominal section width of the tire. It's the measurement of the widest point of the tire from sidewall to sidewall, in millimeters.
   

2. 55%: Known as the aspect ratio, this number indicates the height of the tire's sidewall as a percentage of the nominal section width. In our example, the sidewall height is 55% of 195 millimeters.
   

3. R: This letter denotes the tire's construction type, which in this case, is radial. Radial tires have ply cords that run perpendicular to the direction of travel, resulting in enhanced flexibility and stability.
   

4. 16 inches: The diameter of the tire's inner rim, measured in inches. This measurement helps ensure compatibility with the vehicle's wheel size.
   

5. 87: The load index rating, indicating the maximum load-carrying capacity of the tire. Higher numbers signify a greater load capacity.
   

6. V: This letter represents the speed symbol, indicating the maximum speed for the tire at full load. In our example, "V" corresponds to a maximum speed of 189 km/h.

Understanding the Speed Symbol:

To complement the speed symbol mentioned above, here's a table outlining the maximum motorcycle speeds for various speed symbols:

Understanding these speed symbols is crucial for selecting the appropriate tire for your motorcycle based on its intended use and performance requirements.

In conclusion, deciphering tire numbers involves understanding the various measurements and symbols that convey essential information about the tire's size, construction, load capacity, and speed capabilities. Armed with this knowledge, you can make informed decisions when choosing the right tires for your vehicle.