Not sure whether it's time to replace the tires on your vehicle? Unfortunately, there is no consensus among car or tire makers on acceptable tire life. Generally, tires that have been on a vehicle, used as a spare, or stored in a hot or sunny location for more than six years should be checked thoroughly by you or a professional. With a simple tread test and some tire knowledge, you can tell when it's time for replacement.
The “Penny” Test
This is probably the most well-known and common test for tire treads, but it still holds true. Place a penny, head first into several tread grooves across the tire. If you always see the top of Lincoln's head, your treads are shallow and worn. If this is the case, your tires need to be replaced. If part of Lincoln's head is always covered by the tread, you have more than 2/32 of an inch of tread depth remaining, which indicates you have more time with your current tires.
The 10 Year Mark
Tires being used for six years enter a “keep an eye on it” period. First, be sure to check the manufacturer’s recommendations on your specific tires (these are general practices, as not all tires are created equal). It is recommended that, even if your tires appear to be in good condition, as a precaution, they be replaced 10 years after their date of manufacture. You can check the manufacture date by the Department of Transportation (DOT) number on the sidewall of your tire. If you are unsure of how to locate the DOT number, or what it means, find out here.
The Elements
Exposure to heat and the sun’s ultraviolet rays may cause structural changes to your tires. These changes are not usually a concern in moderate climates. If you live in a cold climate or area with snow and ice, winter tires are recommended. No matter where you live, you can increase the life of your tires by maintaining the correct air pressure, getting regular tire rotations, and vehicle maintenance.
Remember the three major factors that determine whether you’re in need of new tires: tread wear, tire age, and exposure to the elements. When it is time for new tires, be sure to get the right tires - for your vehicle, the time of year, the climate, and terrain.
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