Tire age code. How to Decode a Tire Identification Number to Determine Tire Age

Date Code on Old Tires?

Tire age code

While your tire may still be slightly underinflated due to the extra pressure of a warm tire, it is safer to drive with air pressure that is slightly lower than the vehicle manufacturer's recommended cold inflation pressure than to drive with a significantly underinflated tire. Remember: The vehicle manufacturer's recommended tire inflation pressure is the proper psi pounds per square inch or kPa kilopascals—the metric measure used internationally when a tire is cold, meaning it has not been driven on for at least three hours. Are your tires getting up there in age? If you still have questions beyond this article, try consulting a professional at your local tire dealer; they'll be more than happy to help. Sustained high temperature for example, driving long distances in hot weather , can cause a tire to deteriorate, leading to blowouts and tread separation. The car has roughly 30K original miles.

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Age Code at Tire Rack

Tire age code

If your front and rear tires are different sizes, you may not be able to rotate your tires. This is likely caused by marginally low tire pressure that dips below the warning threshold overnight but rises to an acceptable level as the tires heat up through vehicle operation or an increase in external temperatures. Plug in your vehicle or tire size information on TireBuyer and. Such tires will have an arrow showing which way the tire should rotate when the vehicle is moving forwards. If the number is larger than 200, then this is the diameter of the entire tire in millimeters. This represents the year of the 1990s that the tire was manufactured. A general rule of thumb is a tire has a maximum life of about ten years.

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Tire Age Code at Tire Rack

Tire age code

The pliability, flex, and tread-to-road surface interaction as the tire rolls are critical to its traction and performance. Tires age dangerously because of a chemical process commonly referred to as oxidation, which simply means that as the tire components are exposed to oxygen, the oxygen particles cause the flexible components of a tire to harden and become brittle. In this example, the 45 indicates that the sidewall distance, from the wheel rim to the outside of the tread, is 45% of the section width. About 1976, I recall more mumbo-jumbo appearing on tire sidewalls. The ingredients that make up a tire. Spare tires should be checked and replaced as well. Where was my tire manufactured? I understand where you are going with this.

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What is a tire date code and where do I find it?

Tire age code

Mobile users can even download the free Tire Facts to check tires on the go. No matter which tire blows out—front or back—the steps for safely maintaining control of your vehicle are the same. In fact, properly inflated tires can extend the average life of a tire by 4,700 miles. Tires Manufactured Before 2000 The Tire Identification Number for tires produced prior to 2000 was based on the assumption that tires would not be in service for ten years. If you notice any tire performance issues, such as failing to maintain proper tire inflation pressure, noise, or vibration, consult a tire service professional. In the example above, the tires width, measured from the widest point of the inner sidewall to the widest point of the outer sidewall when properly mounted, is 225 millimeters.

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How to read your car tire: all the marking codes and sizes

Tire age code

These tires have spent almost all of their life in a dark corner of a storage building. If the last digit is 7, the tire was manufactured in 1997. One icon is the cross-section of a tire with an exclamation mark inside. You should contact your vehicle dealer for a system inspection. This means you would need to run a decreased load maybe 25% to 50% less to get the same life on a multi-axle trailer application than the same tire on a tow vehicle application. These are signs that the rubber compound has lost its elasticity, and therefore its ability to properly interact with the road surface.

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How to read your car tire: all the marking codes and sizes

Tire age code

An aspect ratio of 78% was typical for letter-sized tires, although 70% was also common and lower profiles down to 50% were occasionally seen. As we mentioned earlier, this is often not the case with many tires simply because it takes time for the tire to reach the United States from the manufacturer. What about the performance of aged tires? The reason for this is to distinguish a tire built in the 1990s from one fabricated in previous decades. If the tire has only 10 digits, the tire was manufactured before the year 2000. In the image below, we see the 07, indicating the tire was build in 2007.

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Determining the Age of a Tire and Reading the Code

Tire age code

So an aspect ratio of 55 for example means that the profile height of the tyre is 55% of its width. The purchase receipt sent to you via email with any TireBuyer purchase will back up your warranty claim — not to mention, serve as an approximate indication of the age of your tires if you're unable to check the tire sidewall in person. The goal in any blowout is to keep the vehicle balanced and controllable. Is there a firm date to replace my tires? Shipping charges apply for orders to Alaska and Hawaii. This will vary by where you live and the typical weather you drive in. .

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