Monthly Archives: March 2016

Old Tires Can Be Dangerous

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old tiresMost everyone understands that driving on compromised tires is dangerous. It is important to inspect tires and measure tread depth on a regular basis to assure that tires are safe. There is another tire problem, though, that many drivers may not even realize is a safety issue. Old tires can be dangerous, even if the tread appears to be okay.

In many cases, old tires show no visible sign of deterioration and appear to be safe, usable tires. Because they are rubber products, tires have a limited service life, since tire rubber compounds deteriorate over time. Regardless of wear and mileage, cracks develop in the rubber as they age. These cracks can occur on both on the inside and outside of the tire. Eventually this cracking leads to the separation of the steel belts in the tread from the rest of the tire.

According to the Rubber Manufacturers Association, it is not easy to put a specific expiration date on a tire since factors such as heat, driving, and storage conditions can greatly impact a tire’s usable life. The National Highway Traffic Safety Administration (NHTSA) recommends following the guidelines established by the specific tire manufacturer when it comes to tire aging. 

In situations where the origin and age of a tire are in question, you can learn something from the tire itself. Since 2000, tires are required by the U.S. Department of Transportation to have a DOT code. This code provides details about the tire, including its age. The code can be deciphered by downloading a free app offered by the Tire Safety Group. The app, available for Android and iPhone, enables you to get to get a free Tire Facts Report by entering the DOT code from your tire.  The report lets you know if a tire is old, defective, or has been recalled. The app shows you where the code is located on the tire and even includes a flashlight function so you can see what you are doing!

Remember – never take any chances with your tires. Too much is riding on them!

 

Do I Really Need to Replace All Four Tires?

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tiresThe only thing worse than hearing that a damaged tire cannot be repaired is hearing that you should replace all four tires, instead of just the bad tire. This has to be a tire sales pitch, right? Why should you replace three tires that still seem to have good tread, just because the fourth hit a nail at a bad angle? There are actually several good reasons why you should replace all four tires, instead of just the one that has been compromised.

Most of today’s all-wheel drive vehicles recommend that you the replace all four tires at a time because all four wheels need to have the same rolling circumference. If the wheels are not uniform, abnormal drivetrain wear  can occur, resulting in costly problems down the road. All-wheel-drive systems are designed so that the differential and the computer work together to send the right amount of torque to each wheel to minimize slippage and maximize control. When one of the tires is a different size than the others because three tires are worn and one is brand new,  the computer will take an inaccurate reading and the differential will have to work excessively hard. This can eventually result in damage to the drivetrain.

Additional benefits in going with a full set of tires for replacement include a more comfortable ride and better safety. Uneven tires can result in road noise and a vehicle that handles improperly, affecting maneuverability, traction, and smoothness of the ride. Four equal tires will provide the best performance for your vehicle.

Understanding the importance of uniformity in your tires also serves as a good reminder of why tire maintenance is so important. Keeping your tires properly inflated and keeping up with recommended tire rotation will make sure they wear evenly, and give you the best performance and service life.