For years, the penny test has been a quick way to turn a common item of pocket detritus into a tread-depth gauge. Hold Abe upside down, and if the tread clears the top of his noggin, you've got at ...

There are several ways to measure tire tread depth. You can use a tread depth gauge, an affordable tool for accurately measuring the tread left on your tires. You can use a penny in a pinch if you don ...

The penny test (shown below) is the easy way to check a tire tread's depth when you don't have a depth gauge. If you place a ...