dot tire date code chart

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Tire Brands will always be debated amongst all RV'ers! RV-Insight ~ Sioux Falls, SD 57104

For this reason, there is no specific limitation on the age of the tire when it is sold based on its DOT Code. Imagine waiting for hours to have a "tire repair" guy show up with his tools and truck, but no RV tires!

Tire aging and road safety In practice, the standards of the two organizations have evolved together and are fairly interchangeable, but not fully, since the Load Index will be different for the same size tire.[10]. usually to provide a better steering "feel" and the camber and toe This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The diameters referred to above are the theoretical diameter of the tire.

brands will also charge considerably more for that tire, while others ", "Dept. Store the tires raised off the floor on a piece of clean wood, and line them up in a row with the tires sitting vertically side-by-side instead of stacking them horizontally on top of each other. This would make for a whole lot of pages to go through. If you're a driver who swaps out tires for the season — winter tires replace your summer tires and back again — proper storage of your tires in the off-season will help protect them from the elements and delay the aging process.

If you're purchasing a used RV The date code will let you know when tires need to be replaced. Sign up for our newsletter to receive specials and up to date product news and releases. The code has grown in complexity over the years, as is evident from the mix of SI and USC units, and ad-hoc extensions to lettering and numbering schemes. To read the date on a tire, look near the edge of the rim for a series of characters starting with the letters DOT. The first two numbers are the week the tire was manufactured. A better question for the shop - are they actually obtaining what your RV specs are supposed to be set at! Checking your tires’ DOT Date Code will tell you when they were made and how long they may have been stored. therefore accumulate 1,000's of miles.

The code is mandated by the U.S. Department of Transportation[1] but is used worldwide.

As technology changes, there are more materials, and combinations of comounds, to extend tire life and extend wear. Use a flashlight to find the Department of Transportation code on the tire. save a slow leaking tire from becoming a major crisis! On tires that were manufactured in 2000 and after, the last four digits indicate the week and year the tire was produced. [21] In this case it is possible to calculate the appropriate speed rating with a formula.[22]. Many shops do alignments, but the typical In terms of the DOT Date Code, some might assume that the number states when the tire was approved. A good rule of thumb would be to verify what the These are the most common questions asked by car owners thinking of replacing old tyres. All tires sold in the US require a DOT code which is mandated by the U.S Department of Transportation. This keeps your tires at optimal levels of safety. You will find the 4-digit date code following this set of letters and/or numbers. the "Major Brand" Tire Companies produce a quality RV type tire. Prior to 1991, tire speed ratings were shown inside the tire size, before the "R" construction type.

Plus, it indicates that the tire has passed the Department of Transportation’s testing and NHTSA manufacturer requirements.

Automotive 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. The last four digits of this code tell you when your tire was manufactured. How to Read Tire Date Code | Tire America.

© Tireseasy, LLC and, 2020. Spare tires should be checked and replaced as well. "2010 Year Book",The Tire and Rim Association, Inc.,Preface p XVII. This will help reduce stress and potential distortion. The available codes were SR (180 km/h, 112 mph), HR (210 km/h, 130 mph), VR (in excess of 210 km/h, 130 mph). The two standards vary slightly with the capacity required for different inflation pressures. settings are more for keeping the tires positioned the best possible way However 'P' denotes P metric size load and speed rating changes for P tire & non-P tires. Tire Size Code Number 4. no point to it - the RV'er won't have the tools or proper jack to remove it - safely! What is the tyre DOT code? “Since service and storage conditions vary widely, accurately predicting the service life of any specific tire based on calendar age is not possible.”.

Keeping a record of your tires and understanding their age will help you save money on repairs and take proper care of your vehicle.

To differentiate from the earlier 90-ratio tires, the decimal point is usually omitted from the width — for example, 685-15 for a tire 6.85 inches wide.

For example: The speed symbol is made up of a single letter or an A with one numeral. Once the tires reach us, they are moved into Tires Easy’s industrial tire warehouses to ensure proper storage and prevent exposure to seasonal weather conditions.

Eradicate moisture or humidity that could compromise the tires. 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. safety and incidental costs! At Tires Easy, we take tire protection VERY seriously.

A (lower case) "e" indicates that the tire is certified to comply with the dimensional, performance and marking requirements of Directive 92/23/EEC. Starting in 1972 tires were specified by load rating, using a letter code. Luckily, decoding a tire and determining the tire's age is a pretty straightforward process, as a standardized 10-digit Tire Identification Number (often called a DOT number) was mandated by the United States Department of Transportation in 1971. Registration of a new fitting station Tire Load Range Info is the amount of weight a tire The 'DOT' should be followed by a series of four letters and/or numbers. [16], While all ETRTO tires of the same load index will have the same maximum load, P-Metric tires with the same load index may have different load capacities depending on the tire size. Codes on the tires - preferably with the numbers written out as well. Most Nevertheless, for your safety, it's better to replace the set after 5 years even if it's not approaching the legal minimum tread depth yet. Digits shown directly after the DOT code specify the factory which produced the tyre.Below there are examples of codes for different factories:A5 - TC Dębica S.A. factory in Debica - PolandB5 - Michelin factory in Olsztyn - PolandJ3 - Matador AS factory, Puchov, SlovakiaHW - Barum factory, Otrokovice, Czech Republic8C - French Firestone factory - France. Tires are durable, and if they’re showing signs of damage within the first few years, it’s a sign of poor quality.

[15], The load index on a passenger-car tire is a numerical code stipulating the maximum load (mass, or weight) each tire can carry. Check out our specially priced tire selection in limited quantities and period of time. 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.

Before going any Prior

Do yourself a big favor - do NOT expect it to be done within the hour! Light - avoid continuous direct sunlight; the best solution is little or no lighting, Location - keep tyres free of stress in vertical positions (special racks can be purchased to prevent deformation), Temperature - the best is constant room temperature without sudden fluctuations, Moisture - tyres should be stored in ventilated or air-conditioned rooms. 0511 would be the fifth week of 2011). The Rubber Manufacturers Association has said there’s no way to put a date on when tires actually “expire.” There are too many factors that impact the true age of a tire. RV'ing - Fun, Freedom & Adventure - Isn't That What Living is Supposed To Be? still up there, enjoying the ride. These will be a 4 digit number stamped on your tire. It can take a while for tires to reach tire retailers after being shipped from the manufacturer. The greatest tyre knowledge source on the Internet. To determine the allowable range of rim widths for a specific tire size, the TRA Yearbook or the manufacturer's guide should always be consulted for that specific tire—there is no rule of thumb.


Warranty terms, Terms and conditions DOT stands for the Department of Transportation and the code is made of numbers and letters - they indicate the place and date of the tyre’s manufacture. 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.

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