what do tire sidewall numbers mean
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What do the numbers on a tire mean? What do the numbers on a tire mean? The DOT number appears on the sidewall of all tires intended for sales in the U.S., and designates the location of manufacture, the week and year of production, and the specific tire.
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How To Read A Tire Sidewall P identifies your tire as a Passenger Tire. The P stands for PMetric. If your tire size starts with LT rather than a P than it identifies the tire as a Light Truck tire. 225 identifies the tire section width, which is the measurement of the tire from sidewall to sidewall in millimeters.
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"What does a load range of ""SL"" on a truck tire mean?" The letters SL on the sidewall of a truck tire indicate that the tire is a standard-load tire that holds a maximum load pressure of 35 pounds per square inch. This is the maximum load the tire carries, and manufacturers determine this capacity based on the size of the tire. Keep Learning.
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Determining the Number of Tires 1 tread = 2 sidewalls (regardless of tire size). 1 sidewall = 25% of the weight of a tire (regardless of tire size). 4 passenger tire sidewalls = 1 PTE. 1 tread = 50% of the weight of a tire (regardless of tire size). Semi-truck tires weigh 80-120 lbs. Calculate 1 semi-truck tire as 4 PTE.
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Calculating Approximate Tire Dimensions The first three numbers in a typical size (225/45R17) are the tire's indicated section width in millimeters, measured from sidewall to sidewall. If you are familiar with measurements in inches, the section width in millimeters can be converted into inches by dividing it by 25.4. For example: 225mm / 25.4 = 8.86.
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Tire Size Guide The tire size branded on the sidewall provides a significant amount of information about the tire's intended purpose, dimensions, load capacity and high temperature/high speed durability. Our primary example will be based on variations of the 225/50R16 size, although other sizes will appear where appropriate.
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Sidewall Markings Here are some other markings you may find on your tire's sidewall: The M+S (also displayed as M&S or M-S) indicates the tire has all season capabilities. You will find this on almost all all season and winter tires. Summer tires will not have this designation.
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Sidewall Abbreviation …branded on a tire's sidewall identifies how much load the tire is designed to carry at its industry specified pressure.. Passenger Tires Since most P-metric passenger tires are manufactured in the standard load range, they will have nothing branded on their sidewalls or may be branded standard….
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- Enter the second number on your tire's sidewall as highlighted below. Enter the second number on your tire's sidewall as highlighted below. Heads up: Some tires might show a number like 12.5 as 1250.
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- Car tires are marked on the sidewall with a size code. The first part of this is usually a letter. If there is no letter it is a euro metric size for use on European cars and … vans and light trucks.
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What does the writing on the side of a tire mean? It's an odd collection of both English and Metric measurements, which, together, tell you the size and applicabilty of a tire. Here's an example: P205 60 VR 15 The P means passenger car tire. The 205 means that the tire's tread (the part that touches the road) is 205 millimeters, or 20.5 centimeters wide. The 60 is the aspect ratio of the tire.
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How to Determine Tire Load Ratings The max load and maximum inflation numbers found on the tire sidewall indicate the maximum load that can safely be carried and the maximum allowable tire pressure. The construction of the tire (belts, bead, carcass, liner) dictates the tire’s ability to withstand pressure.
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- The industry rule of thumb is that for every 1/2 change in rim width, the tire's section width will correspondingly change by approximately 2/10. For example: a tire in the P205/60R15 size is measured on a 6.0 wide wheel and this size tire has an approved rim width range from 5.5 to 7.5 wide.The tire has a section width of 8.23 (209mm) when mounted on a 6.0 wide wheel.ection Width. A tire's section width (also called cross section width) is the measurement of the tire's width from its inner sidewall to its outer sidewall (excluding any protective ribs, decorations or raised letters) at the widest point.
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What do the sidewall markings on my tire mean? 16 - This number designates the tire's diameter in inches (i.e. 16) 89 - This number indicates the tire's load-carrying capacity, known as the Load Index; as the number for the load index increases so does the load-carrying capacity (All passenger car tires in the United States are also marked with their actual load limit in pounds)
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- 1 Tire width is the width of the tire measured in mm from sidewall to sidewall. This tire width is 225 mm.  Aspect ratio is the ratio of the height of the tire's cross-section to its width. On our example, 60 means that the height is equal to 60% of the tire's width.
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sidewall side·wall. (sīd′wôl′) n. 1. A wall that forms the side of something. 2. A side surface of an automobile tire, between the edge of the tread and the wheel rim. sidewall.
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Load Range / Ply Rating Identification Load Range / Ply Rating Identification. The load range/ply rating branded on a tire's sidewall identifies how much load the tire is designed to carry at its industry specified pressure.
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- Tire Width is the width of the tire measured in millimeters from sidewall to sidewall. The first three-digit number in the tire size refers to the tire width. For instance, in a size P215/65 R15 tire, the width is 215 millimeters. Aspect Ratio is the ratio of the height of the tire's cross-section to its width.
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- 1 The first number refers to the tire width: 130 indicates the tire is 130mm wide at its widest point when installed and ready to ride.  The second number refers to tire height: 90 indicates the tire’s sidewall aspect ratio; which is 90 percent as tall as measured as it is wide, or 117mm in this example.
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What do the numbers on bicycle tires mean? Answers. Relevance. Rating Newest Oldest. Best Answer: The first number (26 or 700 or 27) indicates the tire and wheel diameter. The second number (1.5, 2.0, 25c, and 1 1/4) refers to the width of the tire as in 1.5 inches; 2.0 inches; 25mm; and 1 1/4 inches; and so on. Don't be confused by the road bike tire designation c as in the size 700 x 25c. The c is just a French tire size, it doesn't stand for a numerical measurement.
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Car Tire Numbers Explained â What Do The Numbers Mean? Car tire numbers explained – Tires will have something similar like this printed on the side of it: P215/65R17 95H. The first letter means type of tire for certain vehicles. P = Passenger vehicles tire T = Truck vehicles tire
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HOW TO READ TIRE SIZE The first number to appear in your tire size information is the width, in millimeters, of the correct tires for your vehicle: P225/70R16 91S. Tire width always refers to the measurement from one sidewall to another. Thus, a tire with the measurement “P225” is for a passenger vehicle and has a nominal width of 225 millimeters. Aspect Ratio
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Tire Size Markings The section width is the width of the tire from one sidewall to the other measured in millimeters. In this example the tire is 245 millimeters wide.
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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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Sidewall Abbreviation …check the service description on the tire's sidewall. An extra load tire will have a higher load index than a standard tire. For more information on properly understanding the letters and numbers on your tire's sidewall, read Sidewall Markings.. If your car normally uses a….
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Sidewall Markings Here are some other markings you may find on your tire's sidewall: 1  The M+S (also displayed as M&S or M-S) indicates the tire has all season capabilities. You will find this on almost all all season and winter tires. 2  DOT stands for Department of Transportation.