About Tyre Numbers
Here is an example number: 195 / 55 r 16 87 v
What does each part of this number mean?
Definitions
195 = Width of the tyre. Measured in milimeters.
55 = Aspect ratio. Measured in percent. Height of tyre sidewall as a % of the width.
r = Radial construction. How the inside of the tyre is designed.
16 = Diameter of the inner rim. Measured in inches.
87 = Load Index Rating. Maximum amount of weight a tyre can bear (not in KG or lbs)
v = Speed symbol. Maximum speed of tyre at full load.