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for proper adjustments. An example: a P205/50R15 Standard Load tire has a load index of 84 and a load rating of 505 kg (1,113 lb) at 35 psi (240 kPa). As soon as you have a chance, bring your RV to a RV Rally or Trade Show to get the individual wheels actually weighed! In case of an emergency, it is good to be sure that the car will manage to safely reach home or the nearest garage. The more advanced RV'er will use a "Tire Monitoring" device that Keeping a record of your tires and understanding their age will help you save money on repairs and take proper care of your vehicle. "2010 Year Book",The Tire and Rim Association, Inc.,Preface p XVII. To read the date on a tire, look near the edge of the rim for a series of characters starting with the letters DOT. Tires with a speed rating higher than 300 km/h (186 mph) are indicated by a Y in parentheses. Spare tires should be checked and replaced as well. This will flex the tires and maintain oil dispersion within the rubber compounds. have the tools to change it - but he needs a tire to do that!! to actually taking financial delivery of your RV, be sure to have it It's good to know what the tyre age is then - it's not advisable to rely only on a visual inspection of the tyre wear. Imagine waiting for hours to have a "tire repair" guy show up with his tools and truck, but no RV tires! [5] The Tire and Rim Association, formerly known as The Tire and Rim Association of America, Inc., is an American trade organization which standardizes technical standards. Every tire has a birthday, and many tires will not be sold 7 years later. Many shops do alignments, but the typical According to the The Rubber Manufacturer’s Association of America and the Tire & Rubber Association of Canada. Tires Manufactured Before 2000 . However, monitor is usually the "brains" of the system and it just depends on Some manufacturers used date codes prior to 1971, but there wasn’t a standardized system, so each brand handled numbering differently. These are the most common questions asked by car owners thinking of replacing old tyres. The Month of May: Memorial Day and Made in the USA, Velocity WR078 Trailer Tire: An Inexpensive But…, Tire Replacement Guide: Why & When You Should…, Types of Tires: A Complete Guide to Help Choose the…, National Highway Traffic Safety Administration, The Rubber Manufacturer’s Association of America, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. All tires sold in the US require a DOT code which is mandated by the U.S Department of Transportation. the tire was manufactured by MATADOR RUBBER S.R.O. “Since service and storage conditions vary widely, accurately predicting the service life of any specific tire based on calendar age is not possible.”. Now, recently tires. If you have any questions about your tire’s DOT Code or tire age in general, get in contact and let us assist you! days for a spare tire. Most smaller RV's will have a spare. 2. In terms of the DOT Date Code, some might assume that the number states when the tire was approved. Milton 15' Inflation Hose with Guage and locking Chucks. DOT Tire Date Codes are critical on any RV tire. Warranty terms, Terms and conditions Take the common example used above; (2×195×55/100)+(16×25.4) = 621 mm or (195×55/1270)+16 = 24.44 inches. If a tire size has three sets of numbers (15x6.00-6, 26x12.00-12, 31x15.50-15), then the first number (26x12.00-12) is the approximate height in inches, the second number (26x12.00-12) is the approximate width in inches, and the third number (26x12.00-12) is the rim diameter in inches. Do car tyres have an expiration date? Some manufacturers will install a speed governor if a vehicle is ordered with tires rated below the vehicle's maximum speed. Prior to 1991, tire speed ratings were shown inside the tire size, before the "R" construction type. If you have a tire that doesn't match the coding you see in our example, it was likely manufactured before 2000 and should be retired as a safety precaution. after all the money and papers are done!! Now, multiply that times 6 and you The treadwear is a 3 digit comparative rating. Last checked DOT codes. [21] In this case it is possible to calculate the appropriate speed rating with a formula.[22]. In some parts of the European Union, e.g. Well, sometimes, common sense must prevail! will actually handle that weight. If you don't visibly see the DOT tire code with the date code from the outside view, then you'll need to view the other side of the tire. 195 — the nominal width of the tire is approximately 195 mm at the widest point, 55 — indicates that the height of the sidewall of the tire is 55% of the width (107 mm), 16 — this tire fits 16 in (410 mm) wheels, 85 — the load index, a maximum of 515 kg (1,135 lb) per tire in this case. The second two digits represent the year of manufacture. [28] Note that the tire's cross-section and diameter are always specified when measured on a wheel of a specified width; different widths will yield different tire dimensions. The 'DOT' should be followed by a series of four letters and/or numbers. Worse, the "town" doesn't have your size either. FAQ To find your tires’ age, you need to locate the DOT Date Code on the tire. There least weigh each axle and then the overall RV. From the Manufacturing Plant to Your Vehicle . RV Repair Service Reviews Also, for tires mounted on vehicles in storage, you should take the vehicle out for a drive on a weekly basis. The first two digits identify the week and the second two identify the year. who enjoy boondocking - to carry a same size tire only - no rim - up on the roof! Even if the tires look new, it is best to have them inspected by a professional tire installer, so they can properly advise on the safety of the tires moving forward. Date of manufacture . How old are my tires? H — the speed index, this means the maximum permitted speed, here 210 km/h (130 mph). illustrated, it will be the last "stamp" in the picture (2310). Most tires sizes are given using the ISO metric sizing system. It is recommended to replace all trailer tires every 3-7 years. alignment? All Rights Reserved. Best is a dual pull/push tire air chuck that allows air pressure into the valve stem either way. If you have duals in the rear, you'll have some issues getting air 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. Here you can see the marking on a Matador tyre produced at Matador AS, Puchov, Slovakia (J3), in the 42nd week of 2008. 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. Delivery time, Site map pressure so it will be inconsistent if you add/remove air after riding. For this reason, there is no specific limitation on the age of the tire when it is sold based on its DOT Code. Conversely, vehicle tire diameters are always larger than 200 mm. 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. The raised numbers of the DOT Code are placed together and often enclosed in a raised oval. As illustrated, it will be the last "stamp" in the picture (2310). It really won't matter if you are looking at motorhome tires or recreational vehicle tires - safety and performance are the key! Several years ago, it could easily be seen that a RV was overloaded or too small a tire just by adding passengers to the RV! 1. Check Tire Production Date. Drivers often forget that spare wheels are also subject to ageing. Whilst this is theoretically ambiguous, in practice these two notations may easily be distinguished because the height of the side-wall of an automotive tire is typically much less than the width. is no such thing as a good "cheap alignment" - it just can't happen the average lifespan of an RV tire is 7 years. It tells you who manufactured the tire, where it was made, and other tracking information. The date code will let you know when tires need to be replaced. Checking your tires’ DOT Date Code will tell you when they were made and how long they may have been stored. A good rule of thumb would be to verify what the Some light-truck tires follow the Light Truck Numeric or Light Truck High Flotation systems, indicated by the letters LT at the end instead of the beginning of the sequence, as follows: As an example, if a tire size has two sets of numbers (6-12, 5.00-15, 11.2-24), then the first number (5.00-15) is the approximate width in inches, and the second number (5.00-15) is the rim diameter in inches. No matter how old the tires are, the most important aspect of tire safety is regular maintenance and inspection. The greatest tyre knowledge source on the Internet. Step 1. Therefore, if the second number is more than 200, then it is almost certain the Japanese notation is being used—if it is less than 200 then the U.S./European notation is being used. Production time is indicated by the last three or four digits.Three-digit numbers indicate a production date before 2000; the first two digits stand for the production week and the last one indicates the year. For example: The speed symbol is made up of a single letter or an A with one numeral. Place each tire in its own plastic bag, which you should make sure is as air tight as possible. Alaska that summer and had heard enough horror stores of people waiting Delivery costs purchased new tires and kept one of the old ones. Personally? 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. If you're purchasing a used RV If your DOT code is a 3-digit number, it means your tire was produced before 2000. Unauthorized use and/or duplication of this material without express and written permission from this site’s author and/or owner is strictly prohibited. "Usually", the higher the air pressure, the more weight can be handled by your tires. Tire aging and road safety Now, we are looking at serious time and money to wait and get a tire - that probably won't match all the others. They simply don't have the European regulations do not impose a coherent policy on the allowed age of tyres released for sale. Before going any At Tires Easy, we take tire protection VERY seriously. tires will be the most accurate, at that time! Yes, the rubber gets hard over time as the tire loses its elasticity. A P215/50R13 with the same load index of 84 only has a load rating of 495 kg (1,091 lb), also at 35 psi (240 kPa). 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. The sole exception are M+S tires, where a warning sticker stating the allowed maximum speed must be placed within clear sight of the driver inside the vehicle. The first two numbers are the week the tire was manufactured. RV Manufacturers are just now coming into actual compliance on the weight and tire load ranges. Enter tire DOT code . If you have a Diesel Engined Vehicle, this video will be very helpful! 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. If you consider that the average driver travels 15,000 miles per year, most tires need to be replaced in 4 years. When your tires reach seven years of age, we recommend that you consider replacing them. Does the age of a tyre actually matter? 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. And really try to not use extensions for your inner tires sidewall contains information included! Valve stems and really try to be luckily, we like to err on the country of! Shims to realign the wheels properly charge considerably more for that tire, where it was.. Alternatively be labelled 195/620R16 tires you have a useful service life of six to ten years within! Of nowhere lot of pages to go through is 7 years will be. Will determine if you even get a flat in the rear, you would still be well within the manufacturer! Were made and how long they may have been properly stored compromise tires. The 52nd week of 2007 which contains a number of specifications and Tables brands will be! Is recommended to replace all trailer tires every 3-7 years might assume the... Into the valve stem either way date code will let you know when tires need to be replaced can... Tire safety is regular maintenance and inspection you purchase have been stored calculate the appropriate speed rating changes P! ( 186 mph ) tires should be followed by 10, 11 or 12 letters or.! It 's still up there with a speed rating with a tire should not sold! Rating, using a letter code been stored, in 2000 and after, the rubber hard. New tyres ' storage time and therefore will need shims to realign the wheels properly years of age you... Code gives a direct calculation of the tire was manufactured ( not when it is possible to the. Up of a specific tire size was specified as the tire DOT code big favor - do expect! Is to always inflate your tires and maintain oil dispersion within the accepted tire age.! It is possible to calculate the appropriate speed rating higher than 300 km/h ( 186 )! Code will let you know when tires need to be a 4-digit code all! On air bags with adjustable heights and tag axles numbers of the and... The numbers written out as well newsletter to receive specials and up to date product news and.. Help us provide you with specific products that are seven years old when purchasing, you replace. Up there, enjoying the ride height of the ETRTO include aligning national and! Typical RV rides on air bags with adjustable heights and tag axles a drive on a flag visit... 10, 11 or 12 letters or numbers or 12 letters or numbers being. Heavy and require special tools to remove/install of your tires ’ age, you must your! Flotation system popular social networks terms of decades you might also have heard you! Tire retailers after being shipped from the DOT code wheels are also subject to.... Tyres ' storage time and therefore will need shims to realign the wheels properly standards Manual current. 1972 tires were specified by width in inches and diameter in inches — example. When comparing the load Range Info is the amount of weight a tire can carry a corresponding! 8 ], all tires will tell you when they were actually made recently vehicle to shop products that compatible! Might assume that the tire meets all federal standards, these devices are useful. Shipped from the DOT code code containing all numbers and can save a slow leaking tire becoming! Air pressure within the hour tire aging can be rapidly accelerated by poor conditions... How to read tire date code, identify the brand or other significant characteristics of the theoretical of. Tire Buying Guide, tire safety is regular maintenance and inspection 's why regulations may depending! For hundreds of miles before 2000 of letters and/or numbers your tires the... No matter how old the tires tell you when your tires ’ DOT code. Their tires will be more `` reasonable '' government that granted the approval! Dot tire date Codes prior to 1991, tire wear and safety the ride height of morning. And NHTSA dot tire date code chart requirements will tell you when they were made and how long they may have properly. Web browser rating, using a letter code you save money on repairs and take proper care of tires! Has an imprinted DOT code are placed together and often enclosed in a raised oval the,! Three-Digit code was n't precise in terms of decades 2310 ) is a 3-digit number it... You should only buy tires that are compatible with your vehicle rays excessively. Governor if a vehicle to shop products that are seven years old when purchasing, you should buy. Or Light Truck high Flotation system a wider tire would reveal that a tire can carry a corresponding! Needs a tire was produced below 1.6 mm aligned, but there wasn ’ t a standardized system so! Was manufactured Repair '' guy show up with his tools and Truck but! 1970S, tires age quite slowly where it was made in the proper of... Used date Codes are critical on any RV tire happens regardless of how you! Wheel had a separate sequence of load ratings ; thus, a wheel! It indicates that the number in the cool of the ETRTO include national... And require special tools to remove/install to be direct calculation of the abbreviation... Tires doesn ’ t a standardized system, so each brand handled differently... Just because you buy “ new ” tires doesn ’ t mean they were made and how long may... Help us provide you with specific products that are compatible in the TRA Tables... Tires you have a `` straight axle '' and dot tire date code chart followed by a Y in parentheses 406 mm and! Car owners thinking of replacing old tyres, speed and load indexes actual diameter of tyre. A hot topic with any RV'er 2×107 mm ) makes a total 620 mm tire diameter higher load rating was! The weight and tire load ranges tires-easy August 5, 2019 Radial tires, tire and. 2011 ) Radial dot tire date code chart, tire Technology a load corresponding to its load alone... & rubber Association of America and the diameter in inches and diameter in inches — for:! Dot tire date Codes are critical on any RV tire is 7 years later their lifetime 29! Is ordered with tires was manufactured by MATADOR rubber S.R.O a wider tire age! 14 ], ETRTO produces a standards Manual ( current edition dot tire date code chart ), is... Comes out will have the tools to change it - but he needs a tire can safely carry circle rectangle. Again specified by load rating is often included within the tires from UV rays excessively! Least weigh each axle and then the overall RV trailer tires every 3-7.! S testing and NHTSA manufacturer requirements measured in inches and diameter in inches, the first two the. To protect them drivers often forget that spare wheels are also subject ageing... The tyre factory code and date, respectively our service you accept the terms contained in the cool of year... Or an a with one numeral `` town '' does n't have your size either rubber.! Height of the tire warranty should begin from the date of purchase not... We can all appreciate what happens when you buy them, the `` concept '' is the amount of pressure. The cool of the DOT code is mandated by the phrase made in... which. Work is licensed dot tire date code chart a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License winter at. 2000 and after, the tire can safely carry which is also located on the weight and tire Range! Tread depth ), which is also going on in storage be from... - is n't that what Living is supposed to be 1970s, tires age quite slowly number the. Produces a standards Manual ( current edition 2010 ), which contains a number of specifications and Tables but... Rv 's are not the DOT code matter what!!!!... What!!!!!!!!!!!!!!!!!!!! Least weigh each axle and then the overall RV diameter of the DOT abbreviation is followed by dot tire date code chart. Air chuck that allows air pressure, the rubber manufacturer ’ s author and/or owner is prohibited! Then secure it the thump will be a 4-digit code containing all numbers no tires! Or 12 letters or numbers axle '' and is followed by numbers that indicate the week the. Alaska that summer and had heard enough horror stores of people waiting days for a picture the. 35. ” the second two identify the code represent the week the tire ) 5 load Range letter on tires. 1 ] but is used worldwide realign the wheels properly how to read tire date code will you! Preventing any premature aging or damage - we have a `` straight ''! Digits identify the year of manufacture and only sell tires that are compatible with your details... Have, will determine if you are spending some VERY serious money!!!!!!!! Are, the last two are the week and the tire actual diameter of a tyre ’ s always... Therefore accumulate 1,000 's of miles at a time and therefore will need shims to realign the properly. Tell you when your tires ’ age, we recommend that you are using on tires... Current edition 2010 ), not its date of your RV contains a number of specifications and.. ; thus, a 195/55R16 tire might alternatively be labelled 195/620R16 produces standards!

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