Tire Tread Depth
To effectively measure tire tread depth, you first need to know how to position the coin.
Take a penny and place it with head upside down between two ribs on your tire
If part of the head is covered, your tires are still in good shape.
If you can see his entire head, your tread is worn to 2⁄32 inch or less and it’s time for new tires.
