Gridlock Guy” Doug Turnbull explains why safety advocates have switched from the “penny test” to the “quarter test” to check tire tread-depth and why it isn’t because the U.S. Mint stopped stamping ...

Dear Action Line: I have always used the "penny test" as a way to determine when tires need replacing. Recently, a tire dealership said this is inadequate. True? -- H.R., Tulsa. Submit Action Line ...

Tires can be an endless headache for fleet managers trying to determine which brands and types perform best in their applications. The best way to make that determination is to conduct a tire test to ...