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Penny test for tires – how to measure tread depth You may have heard of the penny test for tire tread depth and wondered if it’s something a layperson can manage, and a reliable test and indication of tire tread depth.
Tire Tech: Measuring Tire Tread Depth with a Coin. U.S. coins can be substituted for a tire tread depth gauge as tires wear to the critical final few 32nds of an inch of their remaining tread depth. Place a penny into several tread grooves across the tire. If part of Lincoln's head is always covered by the tread, you have more than 2/32" of tread depth remaining.
Measuring Tread Depth. Tire tread depth measures the height of the line extending from the deepest part of the tread void to the top of the tread block. This indicates the amount of remaining tread. Regularly checking your tire tread depth can help you determine when it is time to replace your tires. Below are three common ways to check your tread depth:
Stick the probe into the valley of the tread, press the shoulders of the probe flat against the tread bloke, and read off the result. All gauges should measure in both 32nds of an inch and in millimeters. You should use a tire depth gauge to check tread depth every month or so, and check multiple spots as well.
Check The Tread Wear Indicator. You can find the tread wear indicator less than an inch (2/32 of an inch) from the bottom of the tread groove. When the tread wears down to become even with this level, the tire should be replaced. To avoid potential problems, have your tires checked at a Tire & Service Network location near you if you notice any of these common wear patterns:
Tire Tread Depth: Why It Matters and How to Measure It The tread on your tires is a crucial piece of driving safety and performance. All of those knobs, shapes, patterns and grooves have a combined purpose.
Tire tread depth gauges are a fast and easy way for you to know for sure if your tires are safe or if they need to be replaced. Tire tread depth gauges are available at most gas stations. Keep one in your glove compartment for easy access. Find the shallowest groove of the tread and insert the pin of the gauge until the base is flush with the tire.