Tires are just about the most important part of your car. If they’re in bad shape, the car’s ability to accelerate, stop, and turn in all conditions is greatly compromised. Everybody knows to replace tires when the tread gets down to the wear bar, but what about when they get too old? The rubber in tires deteriorates over time due to UV and environmental exposure. The resulting “dry rot” leaves tire structure brittle and leads to sidewall damage and eventual failure. This isn’t “Oh I’ll just fill it up and drive on it. As a precaution, the Department of Transportation recommends changing even new-looking tires once they hit 10 years old, and many manufacturers recommend swapping them out at six years old. Of course, this aging is highly dependent on where the tires live. Tires in hot dry climates have much shorter lives than those in moderate, moist climates. Still, you want to maximize tire life when buying a new set of rubber.
Tire Specs: Understanding the Numbers on Your Tires
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.
Numbers of 70 or lower indicate a smaller sidewall for improved steering response and better overall handling on dry pavement.
The first limited the purchase of certain commodities (tires, cars, metal typewriters, bicycles, stoves and rubber shoes) to people who had demonstrated an especial.
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.
DOT Date Code & Tire Age Explained
Road safety starts with obeying the Highway Safety Code and adopting safe behaviours. Heavy vehicle drivers, owners and operators, here is everything you need to know to fulfil your obligations and ensure your safety and that of other road users. Businesses and self-employed workers can consult, manage or modify their vehicle fleet record online and much more section in French only. Visit the Regular Maintenance webpage for tips and advice.
Don’t let it catch you unprepared!
The rubber on a car tire degrades over time, and tire warranties can be tied to manufacturing dates. Every tire sold in the United States has a date code stamped.
Tire spec notation varies according to car model but primarily consists of symbols and numbers denoting tire width, aspect ratio, diameter, load index and speed symbol that indicate tire performance. 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.
Click the buttons for more information about the components of the tires sidewall! DOT Department of Transportation. Product Name. Tire Size.
How Old Are Your Tires? Check the Born-On Date
Automobile tires are described by an alphanumeric tire code in American English and Canadian English or tyre code in British English , Australian English and others , which is generally molded or moulded into the sidewall of the tire. This code specifies the dimensions of the tire, and some of its key limitations, such as load-bearing ability, and maximum speed.
Sometimes the inner sidewall contains information not included on the outer sidewall, and vice versa. The code has grown in complexity over the years, as is evident from the mix of SI and imperial units, and ad-hoc extensions to lettering and numbering schemes. Most tires sizes are given using the ISO Metric sizing system.
How to determine the age of your tires, or tire manufacture date on your tire, grab a flashlight and slide underneath your car to check the other.
Tires are some of the most misunderstood parts of a vehicle. There is confusion surrounding when they are worn out, correct pressure, rotation schedules and formats, and more. But nothing is as confusing to the average driver than all those numbers on the sidewall of your tires. See all those numbers on the side of your tire? Confusing, right? When you look on the sidewall of a tire, you will notice two prominent things: the brand name and size.
The latter will have a few formats but is simple to find. So, in this example, the tire is millimeters — 9. This is the height of the sidewall from wheel to tread relative to the width. In our example size, the tire will fit a inch wheel.
How to check tire expiry date in Nigeria
The Tax Department is responsible for administering the collection of the fee. You can keep 25 cents for each tire sold to cover your administrative costs. The fee applies to new tires you sell in New York State for use on nearly all self-propelled or towed vehicles that qualify to be registered under the Vehicle and Traffic Law including:. The fee also applies to new tires you sell in New York State with a new or used vehicle, including spare tires, whether they are full-size or for emergency use only.
The waste tire management fee does not apply to sales of recapped or used tires.
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.
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. In this example, you could expect a discount on the new set equal to one-sixth their price, or about 17 percent. You might not get it, though, if you decide to change brands. In general, the best way to preserve the life of your tires, and keep yourself and your passengers safe, is to maintain them properly.
Tire Safety Checklist: What to Do Before Your Next Road Trip
For years, people have relied on tread depth to determine when to replace a tire. If the tread passes the ” penny test , ” they assume the tire still has life, regardless of how old it is, which can be a fatal mistake. Old tires are dangerous, regardless of tread depth. While there’s no federally sanctioned safety guidance on when a tire is too old to be safe, many carmakers recommend replacement at six years from the date of manufacture.
When he was driving two weeks later, the tread suddenly separated from the tire.
Exceptions include vehicles that are used only occasionally, such as classic or show cars. And don’t forget spare tires, which are often not replaced over the.
If you’ve ever wondered how old your tires are, it’s an easy bit of information to find out. Tires actually have a “born-on” date, and it’s listed right on the tire itself. Almost everything you need to know about your tires is molded into the sidewall and coded according to federal requirements, including the specific week and year when a tire was made.
To read the date on a tire, look near the edge of the rim for a series of characters starting with the letters DOT. This code can tell you the manufacturer of the tire and the factory where it was made, as well as provide lot-specific information used for tracking in case of a recall. The last four digits of this code tell you when your tire was manufactured.
The first two numbers indicate what week of the year it was made out of 52 weeks per year , and the second two numbers represent the year. For example, would reveal that a tire was manufactured during the 52nd week of the year Prior to the year , DOT coding was slightly different. If you have a tire that doesn’t match the coding you see in our example, it was likely manufactured before and should be retired as a safety precaution.
It’s always a good idea to have a tire professional inspect your tires when having them reinstalled on your vehicle after storage. This will flex the tires and maintain oil dispersion within the rubber compounds. No matter how old the tires are, the most important aspect of tire safety is regular maintenance and inspection.
How Old — and Dangerous — Are Your Tires?
The structural integrity of a tire can degrade over an extended period of time. When that occurs, tires are more prone to catastrophic failure, which could, at best, cause an inconvenience, or, at worst, lead to a crash. The degradation of a tire occurs over time, mostly the result of a chemical reaction within the rubber components.
DATES: Comments must be received no later than February 18, At the time, the typical light-vehicle tire was a bias-ply tire, had a 78 to.
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.
Reading a Tire Sidewall
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.
Unlike vehicle identification numbers (VINs) and the serial numbers used on the date of purchase or five years from the week the tires were manufactured.
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. Ads urged people to put less wear on their tires by driving in carpools. Meanwhile, scrap-rubber drives collected old raincoats, garden hoses and bathing caps. Tire rationing finally ended on December 31, But if you see something that doesn’t look right, click here to contact us!