Know "how to check car tire tread" by placing a penny headfirst into several tread grooves across the tire. If the top of Lincoln's head is visible, your treads are shallow and worn and need to be replaced. If part of Lincoln's head is covered by the tread as you check around the tire, you have more than 2/32 of an inch of tread depth remaining. https://youtu.be/ZbHHSi6eVeA via @YouTube https://bit.ly/SBAutoRepair
