Tire Tread Rules

Tire tread is extremely important to insuring your vehicle's safety on the road. It provides your car's tires with gripping and traction, preventing your car from sliding on wet and icy roads. Keeping your tires inflated at their correct pressure is one way to extend the life of your tires. When a tire is improperly inflated it causes irregular wear on the tire tread, putting extra pressure on the sidewall which can lead to an eventual blow out.

Tire Indicators

Tire indicators are tiny bars made of hard rubber located across the tread of the tire. As a tire wears, these indicators become visible. The tire should be replaced if the indicators are visible in more than one spot on the tire, less than 120 degrees apart around the circumference of the tire.

Tire Depth

Measuring tire depth is another way to determine when it's time to replace your tires. If the tire tread is less than 1/16 of an inch deep, the tire should be replaced. If you do not have a tread depth guage, you can place a penny inside the tread of the worn tire. If you can see the top of Lincoln's head, your tires are below 1/16 of an inch and should be replaced. The same test can be performed with a quarter on light truck tires.

Rotating Your Tires

Rotating your tires prevents them from wearing irregularly Rotate your tires every 6,000 miles. Tire rotation direction varies from tire to tire. Non-directional tires should be should be rotated in different directions depending on whether you have a car or truck. Speed ratings, performance specifications and directional requirements all play a role in tire rotation as well.