You may be familiar with palmistry, a category of fortune-telling based on interpreting the creases and lines on the inner surface of a person's hand. Some folks will read the soles of your feet, too.

Tire treadwear ratings, also known as Uniform Tire Quality Grading (UTQG), were developed by the National Highway Traffic Safety Administration (NHTSA) and the U.S. Department of Transportation (DOT).