Why You Should Use a Quarter Instead of a Penny to Check Your Tire Tread
As you learned to drive, you may have also learned a few basic car maintenance, such as how to top up a wiper or check the oil level. Another common tip is to check your tire tread with a dime.
But like everything else, the cost of this simple test has also increased over the years. Now, instead of a penny, many automotive experts recommend using a quarter for this check. In an article for TheDrive, Tony Markovich explains how to do this, and why the quarter replaced the penny for this classic hack. Here’s what you need to know.
What is a tire tread and why is it important?
In short, the outer part of the tire, that is, that which touches the ground, is called the tread of the tire and, in Markokvich’s words, “is usually cut into grooves and ridges.” The tread is important because it is how the car holds the road while driving.
As grooves and ridges wear out with use, they become less efficient, allowing the vehicle to maintain traction in inclement weather, especially in the presence of rain. This is because the treads help keep the car under control on slippery surfaces and reduce the chances of aquaplaning .
Why did the quarter replace a penny
Given the importance of the tire tread, drivers are encouraged to check it regularly – and traditionally it is done for a penny ( Michelin maintains this rule today).
Basically, you insert an inverted penny into one of the lugs as the lowest point of the tire, and if you can see the top of Lincoln’s head then it’s time to change the tire. “This rule comes under the impression that 2/32 inches is the limit of a good tire,” Markovic writes.
Meanwhile, some experts have questioned this rule for decades, and now some companies, organizations and publications like AAA and TheDrive recommend using a quarter instead of a penny.
“This rule applies to the impression that 4/32” is the safe limit, “says Markovic. “When it comes to tire safety, we like to be careful, so we use a quarter test.”
How to check the tire tread by a quarter
Finally, Markovic with step-by-step instructions for checking the tire tread with a quarter:
- Find the worn out or lowest point on the tire.
- With the quarter turned over and with Washington’s head facing you, place the quarter between the tire tread.
- If the top of his head is still buried, then you are okay for now.
- If you can see the top of its head, then it’s time for new tires.
And while you’re there, remember to regularly check your tire pressures along with their tread.