All gauges should measure in both 32nds of an inch and millimeters. All you have to do is stick the probe into a groove in the tread and press the shoulders of the probe flat against the tread block and read the result.
There are many models available, but an inexpensive simple graduated probe gauge will work just fine. You can find tire tread depth gauges at your local auto parts store. OTHER WAYS TO CHECK TIRE TREADĪ simple way to check your tire tread depth is by using a tread depth gauge.
If you see uneven tread wear, you should have a technician inspect your vehicle. Even if parts of your tread are deeper than 2/32”, you should still replace the tire when any areas fail the penny test.Ĭonsistent wear around the whole tire is normal, but uneven tread wear could be a sign of improper inflation, wheel misalignment, or a variety of other things. Pay special attention to areas that look the most worn. When performing the penny tire test, remember not only to check each tire, but to check various places around each tire. If it does, your tread is still above 2/32”, If you can see his entire head, it may be time to replace the tire because your tread is no longer deep enough. See if the top of his head disappears between the ribs. Turn the penny so that Lincoln’s head points down into the tread. A “rib” refers to the raised portion of tread that spans the circumference of your tire. Place a penny between the tread ribs on your tire. The idea of the penny test is to check whether you’ve hit the 2/32” threshold. Department of Transportation recommends replacing tires when they reach 2/32”, and many states legally require tires to be replaced at this depth. New tires typically come with 10/32” or 11/32” tread depths, and some truck, SUV and winter tires may have deeper tread depths than other models. In the United States, tire tread depth is measured in 32nds of an inch.
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