Dennis Nicholls
Senior HTF Member
This puzzles me. Tires are not sold in the English (inch pound) system of measurements, nor in the metric (cm kg) system, but rather in some mixed system. For example, a typical tire may be sized as 185 - R60/14, where the 185 is the number of millimeters of carcass width, the 60 is a unitless ratio, and the 14 is the number of inches of rim diameter. What flaming genius decided to mix measurement systems like this?