The width indicates the widest point of a tire from sidewall to sidewall. Some tires have a P or LT in front of the tire width, identifying them for passenger or light truck use. The aspect ratio is the dimensional relationship of the section height to the section width. Tires with an “R” indicate radial tire construction. The load index number and speed symbol correspond to the maximum load-carrying capacity of the tire and its maximum speed capability. The diameter is the size of the wheel from one side to the other.
The following outline is provided as an overview of and topical guide to tires:. Tire North American or tyre British — ring-shaped covering that fits around a wheel rim to protect it and enable better vehicle performance by providing a flexible cushion that absorbs shock while keeping the wheel in close contact with the ground. Firestone and Ford tire controversy. From Wikipedia, the free encyclopedia.
Some riders are getting hyper-sensitive about the age of their tires, but don’t be fooled into thinking tires are done before their time.
The chronological age of any tire can be found on the tire sidewall by examining the characters following the symbol “DOT”. The last four numbers identify the date of manufacture of the tire to the nearest week. The first two of these four numbers identify the week of manufacture which range from “01” to “53”. The last two numbers identify the year of manufacture e. For tires manufactured prior to the year , three numbers instead of four indicate the date of manufacture. We recommend: All tires including spare tires that were manufactured more than ten years ago should be replaced with new tires, even if they appear to be usable from their external appearance and if the tread depth may have not reached the minimum wear out depth.
Switch now to summer tires from Continental. You are here: Homepage Technology Tyre knowledge Tire age. Tire age What do you need to know about the age of your tires? Technical Customer Service. Related Topics. Download Documents.
Setting The Record Straight On Motorcycle Tire Age
Knowing if your car has TPMS will enable you to find the right tires. Not sure? Enter your phone number to receive a text message with a link for this information. The number will not be used for any other purpose.
If you are about to take the winter tires and/or wheels out of storage and put them on your vehicle for the coming months, take a minute to check.
The rule of thumb is to replace tires when they are 6 years old, even if they appear to be in good condition. This is because the rubber can develop dry rot and other structural damage that you may not be able to see. You may be asking yourself how to tell when a tire was made, or how old are my tires? You don’t have to play guessing games to figure it out – the information is all right in front of you, on the sidewall of each tire.
Look on the outer sidewall for the acronym “DOT,” which should be followed by a series of numbers.
DOT Date Code & Tire Age Explained
In the past two decades we have developed a number of new designs that are the result of an extensive evaluation of a variety of variables. In addition, our tires require a higher degree of maintenance and repair, and our new tires must be removed and replaced on a regular basis to achieve the best performance. The performance and wear characteristics of most tires will only deteriorate with frequent use. In extreme low speed maneuvers, the tires may require a less stiff tire compound and a higher performance tire sealant.
The Department of Transportation (DOT) marking is your tire’s identification number. Think of it as a birth certificate for your tire. It shows the plant where your tire.
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.
The Explorer went out of control and hit a motorcycle, killing its rider. An analysis of the used tire revealed that it was nearly 10 years old. In a more recent and high-profile example, the investigation into the cause of the accident that killed the actor Paul Walker revealed that the Porsche Carrera GT in which he was riding had 9-year-old tires.
How Old — and Dangerous — Are Your Tires?
Tires have very useful information molded onto their sidewall. It shows the brand and model name of the tire, its size, whether it is tubeless or tube type, the maximum load and the maximum inflation, safety warning s , and much more. The load range identifies the tire’s load and inflation limits. Load Index – The load index is a numerical code associated with the maximum load a tire can carry at the speed indicated by its speed symbol under specified service conditions.
A tire selector by dimension and vehicle. Geolocation of retail outlets. Currencies and taxes management. connection to tires providers.
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.
How to Tell When a Motorcycle Tire Was Made: Deciphering Tire Codes
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Tires Manufactured Since Since , the week and year the tire was produced has been provided by the last four digits of the Tire Identification Number.
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.
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The Department of Transportation (DOT) insignia is your tire’s identification number. Think of it as a birth certificate for your tire. It shows the plant where your tire.
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.
Even though the tires were never used on a vehicle, they are still several years old. Every tire has a birth date—the day it was manufactured—and an expiration date that is six years from that manufacture date. Most automobile manufacturers warn drivers to replace vehicle tires after six years. To wait any longer than that is a gamble with tire integrity and is risky for drivers. So what can you, as a driver, do to protect yourself?
For new tires, the code is always 11 characters.