How to Check Tire Tread Depth: The Penny Test

When it comes to checking tire tread, there are a issue of methods that can help you know if it ’ s fourth dimension to replace a tire. Heavily wear tread will prevent a bore from performing as designed and can lead to insecure repel conditions. One of the simplest, most coarse ways to check tread depth requires nothing more than a penny and a few moments of your time .

THE PENNY TEST

In the United States, tire tread depth is measured in 32nds of an column inch. 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. The U.S. Department of Transportation recommends replacing tires when they reach 2/32 ”, and many states legally require tires to be replaced at this depth .
The estimate of the penny trial is to check whether you ’ ve hit the 2/32 ” threshold. here ’ s how it works :

place a penny between the tread rib on your tire. A “ rib ” refers to the raised assign of tread that spans the circumference of your tire. Tire step is composed of respective ribs .
Turn the penny so that Lincoln ’ s head points down into the tread .
See if the clear of his oral sex disappears between the rib. If it does, your tread is still above 2/32 ”, If you can see his stallion head, it may be time to replace the bore because your tread is no long deep adequate.

When performing the penny tire examination, remember not entirely to check each run down, but to check assorted places around each run down. Pay special attention to areas that look the most wear. evening if parts of your tread are deeper than 2/32 ”, you should still replace the tire when any areas fail the penny quiz .
coherent wear around the whole run down is normal, but uneven tread wear could be a sign of improper inflation, wheel misalignment, or a assortment of other things. If you see spotty tread wear, you should have a technician inspect your vehicle.

OTHER WAYS TO CHECK TIRE TREAD

Penny Test Image

TREAD DEPTH GAUGE

A simpleton way to check your tire tread depth is by using a tread astuteness gauge. You can find tire tread astuteness gauges at your local car parts store. There are many models available, but an cheap elementary graduated probe gauge will work equitable fine. All you have to do is stick the probe into a groove in the step and press the shoulders of the probe flat against the tread block and read the result. All gauges should measure in both 32nds of an edge and millimeters .

TREAD WEAR INDICATOR BARS

Another indicator of worn out pace already lives in your tires themselves. Every performance, light truck, or medium commercial bore comes equipped with indicator bars ( or wear bars ) embedded between the pace rib at 2/32 ”. They ’ re there to help you monitor tread depth and make decisions about tire replacement. Just look to see if the tread is flush with the indicator bars. If they are, it ’ randomness clock to replace the tire .

DON’T WAIT UNTIL IT’S TOO LATE

While the penny run down test does deliver on what it promises – indicating whether tread has reached the legal limit – it may not be the best index of whether your tires are dependable for the road. Tire performance can diminish importantly before your tread hits 2/32 ”. even though the law deems fit for safe drive may not prevent you from hydroplaning or losing control condition in showery, slushy conditions. If you think your tires may be close to needing substitution, have them checked out by a accredited automobile mechanic .

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Category : How To

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