Checking your tires on a regular basis is an important step in protecting your safety and your automotive investment. Ideally, tire inspections should be performed monthly. If you drive over potholes and debris in the road, live in a cold climate, or drive long distances regularly, then you should inspect your tires more often.
Always inspect your tires before a long trip. The more often these inspections are performed, the easier it will be to find a small problem, such as a nail in your tire, and fix it before it becomes a more expensive and time-consuming issue. Tires depend on good tread condition depth to maintain traction and to shed water on wet roads. The tread should be checked at least once a month for excessive and uneven wear. The most accurate tread depth measurements are made with a simple tread depth gauge available at any parts store.
Or you can use the traditional quarter and penny tests. Tires worn to this level will also have visible wear indicators thin bald strips running from side to side across two or more tread segments.
For example, a pickup truck traveling at 70 miles per hour that passes the penny test can take up to However, the same truck has a stopping distance feet shorter if it passes the quarter test instead. This is a 24 percent difference in stopping distance, and the equivalent of six or more car lengths. The Tire Rack also reported that tires passing the quarter test exhibited better grip on the road under other driving conditions as well.
Given these facts, AAA suggests you put that penny back in your piggy bank and instead use a quarter to check tire wear and determine when it is time for replacement.
Keeping your tires properly inflated is one of the easiest ways to help maintain good gas mileage and extend the life of your tires. Locate the valve stem on your tire. If you look at the back of the air pressure tool there is a small nipple that is for releasing air pressure.
Use this, or a similar tool, to press down on the pin firmly. This will release air from the tire. What is your recommended tire pressure? Up Next. If shopping for tires feels like learning a foreign language, read this. Here's a free and easy lesson in tire anatomy, from Firestone Complete Auto Care.
Snow tires can make a big difference for your safety in winter conditions. Find out how snow tires vary from regular tires, with Firestone Complete Auto Care. Find Store. Find a Different Location Find a Store. The 5. The 6mm side is for aluminum nipples. There are wheel designs that place the nipple down inside the rim where they are not accessible from the outside.
It is necessary to remove the tire and rim strip to access the nipple. Manufacturers vary in the size of fitting used for these Internal nipple rims. It is often impossible to reach down inside the rim to measure the wrench flats. Contact the wheel manufacturer for the size of the nipple.
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