It is highly important that your car’s tires have plenty of tread (2/32 of an inch is the minimum, 4/32 of an inch is recommended) so you don’t lose traction. Here's how to check: Take a penny and insert it – Lincoln's head first – into the grooves of your tires. If any part of Lincoln’s head is covered, you have a legal amount of tire tread left and your tires probably don’t need to be replaced. However, if there is any space above Lincoln’s head, or if you can see any part of the words “In God We Trust,” it’s time to get new tires. For more tips on taking good care of your tires, and making them last longer, click here.