Breaking Down the Numbers on Your Tires

Posted by: Ikeokwu Chidozie. The issue of tire explosion has been a recurring news from the Nigerian roads, these tire explosions have led to so many car accidents and it has claimed a lot of lives. Most car users in Nigeria have very little knowledge that expired tires have more possibility of exploding, and some others who consider aging and wearing as a factor for tire explosion still get surprised when they experience tire explosion after purchasing a new tire. There are a lot of factors that need to be considered when selecting new tires in Nigeria, these factors contribute to safety, and cannot be overlooked because of tire expiration and the hazards it can cause. Some car users prefer to buy used tires whether foreign used or locally used, just seeing that it looks good and strong satisfies them. Others who go for brand new tires get cheated because they buy tires close to expiration date or already expired tires while the rest rely on the thread depth to determine whether to replace a car tire. This could happen to an expired car tire while on the road and result to an accident. Tires are manufactured using rubber, carbon black and a combination of some chemicals that holds all the components intact; the tires are mostly durable for a certain period after the date of manufacture. Tires have shelf life and if they are kept longer than this period of time, it makes them unfit for road use or sales; the reason is because their rubber would lose quality over time. Weather conditions like sunlight, heat and general wear and tear can quicken the rate at which tires get bad.

Tire Date Code and How to Read It

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.

Your vehicle’s tires are the only thing between you and the road. To help ensure Use this date code to determine the age of your tires. For this particular tire.

The purpose of this regulation is to reduce greenhouse gas emissions from vehicles operating with under inflated tires by inflating them to the recommended tire pressure rating. The regulation applies to vehicles with a gross vehicle weight rating GVWR of 10, pounds or less. Get the Flash Player to see this video. The effective date for the regulation is September 1, If you have questions on the regulation or how to comply, please contact the following staff.

Final Regulation Language Theresa Anderson Jesica Johnston Posted: August 10, OAL has until August 31, to make a determination. Please submit additional questions to Theresa Anderson at The deadline to submit public comment is July 6, The effective date for the Tire inflation Regulation has been changed. We are proposing an effective date of September 1, For questions please contact Theresa Anderson at

Tire Safety Checklist: What to Do Before Your Next Road Trip

Due to the latest decisions taken on 06 May by government offices and public authorities in Germany, the German state of North Rhine-Westphalia will be permitting from 30 May onwards the holding of trade fairs and congresses, subject to conditions. We are aware of the responsibility that this involves. As event professionals, we see ourselves in a position to create framework conditions suitable to trade fairs, even in times such as these.

Trade fairs with a B2B orientation are fundamentally different to sporting events and funfairs. With trade fairs, the focus is on personal conversations and business contacts.

Automotive experts and safety advocates call aged tires a “hidden danger”: Tire manufacturers must provide the date on which the tire was.

On December 27, , the federal Office of Price Administration initiates its first rationing program in support of the American effort in World War II : It mandates that from that day on, no driver will be permitted to own more than five automobile tires. The first limited the purchase of certain commodities tires, cars, metal typewriters, bicycles, stoves and rubber shoes to people who had demonstrated an especial need for them.

The second limited the quantity of things—like butter, coffee, sugar, cooking fat, gasoline and non-rubber shoes—which every citizen was allowed to buy. As a result, of course, the black market flourished—studies estimated that 25 percent of all purchases during the war were illegal. Japanese occupations in the Far East had made it impossible to get rubber from plantations in the Dutch East Indies, and what little rubber was available went straight to airplane and munitions factories.

Because no one had yet figured out how to make really high-quality artificial rubber, the OPA especially wanted to encourage people to care for the automobile tires they already had.

Understand your tire

I agree to the use of cookies and tracking mechanisms which are used to analyse my activity on this website in order to improve my user experience. Find out more. A tires sidewall protects the carcass on the inside and provides a comfortable riding experience due to its flexibility during cornering.

This can cause you to lose control of the vehicle, and it almost always causes some However the date code is (usually) only found on one side of the tire.

It may be tentative, but tires do have an expiration date. There is a general consensus that most tires should be inspected, if not replaced , at about six years and should be absolutely be swapped out after 10 years, regardless of how much tread they have left. How do you know how old your tires are? Other tires may be built to provide 30, miles of service. The average American drives between 14, and 15, miles a year, according to data from the Federal Highway Administration.

Then you can compare that with any advertised warranty on the make and model of the tires and figure out how many years of service to expect. If you live where winter tires are advisable and swap those onto the car for some months of the year, your regular tires will get less use and will endure for a longer period of time, but remember the caveats about tire age. Zielinski also noted that if you hit the wear bars at 50, miles on a set of tires with a 60,mile warranty, for example, tiremakers that offer such coverage will typically prorate the price of a new set.

How to: Read Tire Date Codes

Maintaining your tires takes a little extra time, but nothing is more important for safety and long wear life. Learn about tire care in this section. Federal law requires tire manufacturers to place standardized information on the sidewall of all tires. This information identifies and describes the fundamental characteristics of the tire and also provides a tire identification number for safety standard certification and in case of a recall. In general, the larger the number, the wider the tire.

The manufacture date is located on the sidewall of the tyre, displayed as a four-​digit number; the first two are for the week and the last two for the year.

When buying new cars, you also get a new set of tires. But when replacing tires after some years, you need to know the tire information on the sidewall. Especially when finding the appropriate replacement, the tire size and the year of production need to be confirmed. The following is the explanation of the information on a tire sidewall. Tire rubber hardens or deforms with age, its internal structure changes, and causes degradation of its stability and the quality.

Before you purchase tires, you must check the year of production.

Tire Safety: Expiration Dates

Luckily, you maintain control and safely maneuver to the side of the road. The tires are new, purchased a few months ago from a local tire shop. How could this happen to new tires? The fact is that all tires have an expiration date. Surprisingly, many consumers and sellers of tires do not know about tire expiration dates. An uninformed consumer thinks he or she purchased brand new tires when in reality those tires may have been sitting on the shelf for years.

Sometimes it is difficult to locate the correct code, but if you can find the word DOT on the tyre sidewall, following this there is usually an impressed 4 digit code​.

JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. Tire age is a tricky subject at Coker Tire, because we manufacture NEW tires that look like old tires. There can be some confusion in regard to tire age, and that’s why we wanted to put together this guide to decoding your tire and therefore determining the tire’s age.

The tire industry has some loose guidelines on tire age that call for tire replacement after 6 to 10 years of service. On a daily driver, you’ll likely wear out the tread before the year window, but on a collector vehicle, the tire could expire well before the tread is gone. Even if a car is stored inside and the tires pass a visual inspection no cracks, dry-rot or other visible deterioration we typically suggest replacement after 10 years if you plan on driving it.

So, what happens if you drive on a tire that is more than 10 years old? You could get lucky and the tire could last until the tread is worn down, or the tire could separate without warning. Even without noticeable defects, the tire could be susceptible to sudden delamination or separation due to the heat buildup from driving.

How Old — and Dangerous — Are Your Tires?

We respect your privacy. All email addresses you provide will be used just for sending this story. Make a tire check part of your regular car maintenance routine, because it can improve your safety and boost your car’s fuel economy. Consumer Reports encourages those traveling over the long Memorial Day weekend to follow these quick tips. To get the most out of your car’s tires, check their pressure monthly and visually inspect them for cuts, cracking, and bulges.

Tires are some of the most misunderstood parts of a vehicle. In the example above, the DOT Number has a date code of , which means.

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 ]. But how can you determine the age of a tire? You can tell how old a tire is by looking on the tire’s sidewall. There are lots of markings ranging from the type of tire, a speed rating that corresponds to a maximum safe speed your tire can sustain, the size of the tire and also when the tire was made; however, if you look after the Department of Transportation DOT letters, you’ll see another list of numbers.

If the tire was made before the year , you’ll see three numbers after the DOT letters; the last number indicates the year the tire was made. On newer tires, those manufactured in or later, you’ll see four numbers. The first two numbers indicate the week it was built and the last two digits specify the year the tire was made.

Here’s everything you can learn from reading a tire sidewall

With gas prices these days, you often hear about keeping your tires properly inflated. You might also rotate, balance, and check your tires regularly for wear, but most drivers do not know that their tires have an expiration date? Tire defects aside, just because a tire looks brand new does not mean it is safe to use. Modern tires are highly engineered products that must withstand the weight of a car plus the forces from braking and turning while providing a comfortable ride and increased gas mileage.

Even without exposure to heat and friction from the road, certain tire compounds like natural and synthetic rubbers decompose over time. Tire manufacturers must provide the date on which the tire was manufactured, but not the date by after which the tire should not be used.

If you are a tire retailer, including a car dealer or an auto repair shop, you must collect the $ Quarterly period, Due date for filing return.

Providing total tyre supply and service for commercial fleet operators of passenger, light truck, truck and bus fleets. When you’re weighing up the options of purchasing a franchise, one very important consideration is the power of the brand you’re buying into. Helps you to get the most from your investment. Our expert maintenance and care will maximise the life of your next tyres. Our mission, values and commitment to sustainability and innovation define who we are and drive us to be the global leader in technology.

Old tyres can be a ticking time-bomb that could dangerously fail and lose air. Bridgestone explains how. Tyres are made of various types of textile, steel and rubber compounds that have properties that evolve over time. As the rubber in a tyre gets older and is exposed to the elements, the strength of the bond between the rubber and the steel belts is reduced. When an old tyre is put under load, cracks in the rubber will begin to form.

DOT Date Code & Tire Age Explained

Decoding your car’s tire information doesn’t require flipping through the owner’s manual. All the information you need is right there on the sidewall. You just have to know how to crack the code.

The 17 number indicates it was manufactured during How to determine the age of a tire. Prior to year three numbers are used for the date of.

Every sidewall has its own unique information that is divided into four main sections:. This describes the fundamental characteristics of your tire. Size, construction, speed rating and more. This designates the type of vehicle the tire fits. P is for passenger metric. Why millimeters? It originated in Europe, which uses the metric system.

The lower the ratio, the smaller the sidewall height, which means better cornering, but a rougher ride. Other letters used are D, for diagonal construction, and B, for belted.

How to read dot dates on car tires AND read where they were made.


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