If you don’t have a tread depth gauge, you can use a penny. Simply place a penny upside down in the shallowest groove of the tire. If all of Lincoln’s head is visible, your tire has 2/32nds, or less, of tread life remaining, and it’s time to order replacements.
replacing tires
new tires
tire academy
quarter test
penny test
tire tread depth
when to replace tires