Tires, like most other auto parts, are built to withstand a great deal of wear and tear. Unlike other car parts, however, tire manufacturers always give an estimate for about how long a tire should last. The estimates themselves can range greatly for each tire, but you’ll usually see a manufacturer listing of how many tens of thousands of miles you may expect out of that particular tire. When it comes to car part longevity, however, there are always circumstances when the auto part information given by a manufacturer may not apply. In the case of tires, the estimate of how long a tire can last is based primarily on the tread wear. But some safety advocates want to add an expiration date of six years onto each tire, regardless of how much tread is left on them. The reason for setting up this six-year standard is that some research has shown that after that amount of time passes, tire failures dramatically increase. Although there isn’t a set expiration date as of yet, companies like Ford Motor Company already encourages its customers to scrap their tires if they’re more than six years old [source: Holguin ].
How to Tell When a Motorcycle Tire Was Made: Deciphering Tire Codes
The first two digits of the date code tell you the week that the tires were built, and the last digit tells you the year. For example, a date code such as.
E-mail Share this page to my friends. Your Information Message. Clear Fields. Tire Sidewall A tires sidewall protects the carcass on the inside and provides a comfortable riding experience due to its flexibility during cornering.
9 Investigates: Some experts say date on tire age code is very important
A tire’s plant of origin and date of manufacture are located on each tire. These can be determined by examining the series of letters and numbers called the Tire.
This quick guide will help you find the manufacture date of your tire and understand how Tires Easy handles tire age based on the DOT Code. Keeping a record of your tires and understanding their age will help you save money on repairs and take proper care of your vehicle. It tells you who manufactured the tire, where it was made, and other tracking information. The raised numbers of the DOT Code are placed together and often enclosed in a raised oval. The first two numbers are the week the tire was manufactured.
In the image below, we see the 07, indicating the tire was build in This particular tire was made in the 35th week of On tires that were manufactured in and after, the last four digits indicate the week and year the tire was produced. The first two digits identify the week and the second two identify the year. However, the identification information is usually on the inner sidewall of tires. If you purchase new tires today, and the DOT Code was a year ago, your warranty will still begin on the purchase date, not the manufacture date of the tire.
If for any reason you are uncomfortable with the age of your tires after looking at the DOT Date code, please call us and we can quickly provide you with a return under our 45 day return policy. It can take a while for tires to reach tire retailers after being shipped from the manufacturer.
How Old — and Dangerous — Are Your Tires?
Blog , North America , Sailing. Once a tire begins to tire down, it becomes more likely to fail in the tires of a tread separation—often at highway dating, when the failure is most likely to cause catastrophic tires or death. The dating motorcycle tires is different from automobiles but the one you reported still looks strange to me. Tires age dangerously because of a chemical process commonly referred to as oxidation, old simply means that as the tire components are exposed to oxygen, the oxygen particles tire the flexible components of a tire to harden and become brittle.
Verify the physical age of any car tire by examining the markings on the tire sidewall For example, a tire with a DOT of XXXXXXX has a manufacture date.
Each farm tire sidewall includes important information about the size, tread, load index and speed ratings, production code as well as safety and bead seating warnings. These details can help assess tire safety and also inform your next tire purchase. The load index is the two or three digit code that indicates the load carrying capacity of the tire. Maximum load goes hand in hand with the speed states by the speed symbol.
Together these numbers can be considered a variable performance rating. Date Codes tell you where your tire was made as well as what week of what year it was manufactured. The bead seating marking on the sidewall shows you the maximum inflation pressure to seat the bead, which allows the tire to be inflated to the correct pressure. When you operate tires as the recommended inflation pressure, you minimize soil compaction and increase fuel efficiency.
Any safety warning information is located closer to the wheel rim. Sign up to receive emails about product information, special offers and events. See Benefits.
Determining the Age of a Tire and Reading the Code
A frequent question about tire maintenance concerns service life. How long will your tires last before you should replace them? The answer depends on different factors such as your driving style, the tread design of the tire, regional climate, road conditions, and how frequently the car is in use. Another factor is you, the driver. Just like the rest of the vehicle, you have an essential role in the care and maintenance of the tires on your wheels; they will last longer the better you look after them.
The California Highway Patrol noted that the tires’ age might have tell owners to replace tires six years after their production date, regardless of tread life.
What is the proper tire inflation? Maintain air pressure at the maximum PSI recommended on the tire sidewall. It’s best to check tire pressure with a quality tire gauge when tires are cold and in the shade. Under inflation is the number one cause of trailer tire failure. An underinflated tire creates abnormal tire flexing and excessive heat causing: – Ride and handling problems – Decreased fuel efficiency – Reduction of tire life Driving on tires with too much air is also not recommended.
Over-inflated tires are more likely to cut, puncture or fail by sudden impact. How do I determine the age of my trailer tires? Every tire has a date code stamped on the sidewall, which is the date the tire was manufactured. The date code is usually at the end of the DOT I. The first two numbers indicate the week out of 52 and the last two digits indicate the year.
For example, means the tire was manufactured the 34th week of Please keep in mind that remaining tread is not an indicator of tire life as the irregular duty cycle requires that trailer tires sit in extended storage under static load conditions often for long periods without movement or maintenance causing the tire carcass internal structure to break down, a condition undetected by visual inspection.
How old are my tires?
Most people buy new tires without bothering to check if they are really new. Tires are stored in warehouses, and they may be several years old by the time you buy and install them on your car. Then there is the question of how long you should keep the tires on your car. Over time, the rubber in the tires will deteriorate due to environmental exposure.
How to determine the age of a tire. Prior to year three numbers are used for the date of manufacture. The first two numbers identify the week and the last.
The alpha numerical coding on the sidewall of Dunlop motorcycle tires can be confusing. It is important to understand these codes to insure you are getting a safe tire that will work on your particular motorcycle. Dunlop tire codes utilize metric measurements. Metric sizing is the most widely used and has the most information. Simply put, the higher this number is, the taller the tire will be. In this case, the tire is 65 percent as tall as its width. If there are two letters after the aspect ratio, the first will be speed rating and the second will be tire construction.
If there is only one letter or a dash – after the aspect ratio, then it indicates construction type and the speed rating will appear in the service description. The service description is a combination of the load index 81 and the speed rating H. All Dunlop tires also specify the date of manufacture on the sidewall. It is important to pay attention to these dates as tires can become unsafe if they are stored too long or in poor storage conditions.
On the side wall next to the U. DOT tire identification number you will find a 4-digit number. The first 2 digits indicate the week of its manufacture and the last two are for the year.