Don’t tell them. Once you start looking for exceptions to “use metric for everything”, you’ll find one in every country, and people get really angry when you point this out. As if not being 100% metric is some kind of moral failing.
Car tire sizing is a bizarre, design-by-committee thing, though. Diameter is in inches, width is in mm, and sidewall width is a percentage of the width. Why?
Don’t tell them. Once you start looking for exceptions to “use metric for everything”, you’ll find one in every country, and people get really angry when you point this out. As if not being 100% metric is some kind of moral failing.
Car tire sizing is a bizarre, design-by-committee thing, though. Diameter is in inches, width is in mm, and sidewall width is a percentage of the width. Why?