Eli5: how come tires use marking from different measurement system. Metric for the width, imperial for radius and percentage for height? (like 205/50 R16)

Question

Eli5: how come tires use marking from different measurement system. Metric for the width, imperial for radius and percentage for height? (like 205/50 R16)

In: 422

Answer 1

Millimeters are more accurate than inches. It’s tough to represent 8-3/8” without confusion. Fractions are very difficult for a lot of people. That’s why the 1/3 pound burger didn’t win against the 1/4-pounder.