how to read tire date code
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- Reading tire date codes. 1  Located on the tire sidewall near the edge of the rim. 2  Part of a long alphanumeric serial number starting with DOT. 3  Date codes are the last three or four digits at the end of the DOT safety code.  The first one or two digits indicate the week the tire was manufactured.
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Tire code From 1965 to the early 70's, tires were made to an 80% aspect ratio. Tire size was again specified by width in inches and diameter in inches. 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.
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Tire code Tire code - Historical Tire Codes. 1  Prior to 1964, tires were all made to a 90% aspect ratio. 2  From 1965 to the early 70's, tires were made to an 80% aspect ratio. 3  Starting in 1972 tires were specified by load rating, using a letter code.
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How To Read Tire Date Codes Determining the Age of a Tire. When it comes to determining the age of a tire, it is easy to identify when a tire was manufactured by reading its Tire Identification Number (often referred to as the tire's serial number).
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How to Read a VIN - Vehicle Identification Number How to tell the year of a vehicle buy looking at the VIN. This is the most common character used in a VIN, the 10th character from the left will tell you what year the vehicle is. Car VIN# 1HGCG1659WA029633. Look at the 10th digit of the VIN - W = 1998.
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2008-2009 Impala & Malibu 2. Starting with the left front tire, active the sensor by holding the antenna of the J-46079 aimed upward against the tire sidewall close to the wheel rim at the valve stem location. Press and release the Activate button and wait for a horn chirp.tarting with the left front tire, learn the tire pressure using one of the following methods: - Hold the antenna of the J-46079 aimed upward against the tire sidewall close to the wheel rim at the valve stem location. Press and release the activate button and wait for a horn chirp.
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Tire code Prior to 1964, tires were all made to a 90% aspect ratio. Tire size was specified as the tire width in inches and the diameter in inches - for example 6.50-15. From 1965 to the early 70's, tires were made to an 80% aspect ratio. Tire size was again specified by width in inches and diameter in inches.
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How to determine the age of your tires How to find the DOT number on your tires. If you look closely at the side of each of your tires, you'll see a bunch of letters and numbers. While this may just look like a confusing jumble, it's actually useful info. Look for a number that starts with the letters “DOT,” followed by a series of 10-12 characters.
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How Old â and Dangerous â Are Your Tires? The second two represent the year. A tire with a DOT code of 1109 was made in the 11th week of 2009. Tires with a three-digit code were made prior to 2000 and are trickier to decode. The first two digits still tell you the week, but the third digit tells you the year in the decade that it was created.The hard part is knowing what decade that was.or years, people have relied on a tire's tread depth to determine its condition. But the rubber compounds in a tire deteriorate with time, regardless of the condition of the tread. An old tire poses a safety hazard. For some people, old tires might never be an issue.
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Tire Pressure 1 Purchase a trusted tire pressure gauge. 2  Check your tires “cold” – before you’ve driven or at least three hours after you’ve driven. 3  Insert tire pressure gauge into the valve stem on your tire. ( 4 If you are using a digital tire gauge like the one pictured, the gauge should begin reading the air pressure immediately.
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How to Read Speed Rating, Load Index & Service Descriptions How to Read Speed Rating, Load Index & Service Descriptions. Using a P195/60R15 87S tire size as our example, the 87S at the end of the size represents the tire's service description. A service description identifies the tire's load index and speed rating. Service descriptions are required on all speed rated (except for Z-speed rated) tires manufactured since 1991.
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Tire Size For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire's width. The bigger the aspect ratio, the bigger the tire's sidewall will be. Construction. The letter R in a tire size stands for Radial, which means the layers run radially across the tire.
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Tires Expire in Six Years Check Your Tires for Free at Tire Safety Group. The Tire Safety Group offers a free tool for consumers to check their tires to instantly determine whether a tire is expired or recalled. Simply type in the full DOT code from your tire and instantly receive a free Tire Facts Report.
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How to Read Speed Rating, Load Index & Service Descriptions The first two digits (87S) represent the tire's load index and are followed by a single letter (87S) identifying the tire's speed rating. Using a P195/60R15 87S tire size as our example, the 87S at the end of the size represents the tire's service description. A service description identifies the tire's load index and speed rating. Service descriptions are required on all speed rated (except for Z-speed rated) tires manufactured since 1991.
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Decoding Tire Code: Load Index, Speed Rating, and M+S Designation This week, we will examine the rest of the code. The tire performance index is displayed after the wheel diameter, and represents the tire’s load and speed ratings. In this case, the 93 load index represents 1,433 pounds, and the speed rating of V represents 149 mph. Letter. Max.
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- - The useful life of motorcycle tires. How to recognize the production date of Continental motorcycle tires: The production date stamp of any tire can be found on the sidewall after the DOT logotype stamped there. (Note: the date stamp is only located on one side of the tire).
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- 0604. The final four numbers denote when the tire was produced, with the first two indicating the week, and the last number indicating the year (0604 indicates the tire was built in the 6th week of 2004).
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- The first number is your overall diameter of the tire. In this example the tire diameter or height is 33 inches tall. The second number represents the width of the tire. In most cases with inch measurement tires the width will have a .50 decimal after the initial number. In example A this reads 12.50, meaning the tire width is 12 and 1/2 inches.
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- The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire's width. The bigger the aspect ratio, the bigger the tire's sidewall will be.
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- Checking tire pressure. 1  1. Remove the valve stem cap from the tire. 2  3. Remove the gauge. 3  4. Read the tire pressure on the gauge stem and compare to the specification shown on the Tire and Loading Information label.
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How To Read Tire Date Codes Prior to 2000, the tire industry assumed that a tire would not be in service longer than ten years. As such, the date code consists of only three digits, two for the week and one for the year. For more information, read Determining the Age of a Tire.. Related Products: Tire Date Code | Old Tires | How Many Years Do Tires Last. Tire Tech Information - Determining the Age of a Tire. …location, tire size and manufacturer's code, along with the week and year the tire was manufactured.
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- However, you may find the production date on a tire. Look for the DOT numbers on what would be the inside of the tire. Example, D … OT 02112 would be the 21st week of 2012 that tire was produced.
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What do the numbers on tires mean? but it's written in code. The tire size is just one small piece of this code. The tire size P225/45R17 91V may not mean much to the average person, but to tire geeks like us it speaks volumes. Read on to learn how to crack the tire code with this handy guide dedicated to tire types, sizes, and construction.
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How To Read A Tire Sidewall Prior to year 2000 three numbers are used for the date of manufacture, first two numbers identify the week and the last number identifies the year of manufacture. To identify tires manufactured in the 90s, a decade symbol (a triangle on its side) is located at the end of the DOT serial number.
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- How to Identify Tire Manufactures December 9, 2002. (Updated 12/13/08) DOT Markings. Essentially the DOT marking serves as the tire's fingerprint. DOT signifies that the tire complies with U.S. Department of Transportation Tire Safety Standards, and is permitted for highway use. For example refer to the following markings: DOT M5H3 459X 064. The first letter and number following DOT designate the tire's manufacturer and plant code.
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- Tires: Guide For Proper Use and Maintenance and RV. Tire Information – MWL43146; and the MICHELIN® Truck. Tire Data Book – MWL40731. WHEN TO CHECK RV TIRE PRESSURE. The RV owners need to know the correct pressure per. axle for their RV, and they need to know when and how. often to check the MICHELIN® RV tires.