tire number description
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Tire Size 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. 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. Construction.
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What Do Tire Numbers Mean? Here's each number and letter in order, as well as what it represents. A more detailed explanation of each characteristic is below. 255 - This is the tire's width in millimeters. 45 - This is the tire's sidewall height, expressed as a percentage of the width figure, also known as an aspect ratio.
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How To Find Your Tire Size Once you find the series of numbers on your tire’s sidewall, use the diagram above and the list below to find the meaning of each number. Metric, or tire type, defines the proper use of the tire. For example, a P designation means that it is a passenger car tire.
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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.T-metric sized special trailer service tires will be branded with their load range (load range D or LRD) on their sidewalls and list their appropriate load range letter in their descriptions as ST205/75R15 LRD.
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What Do Tire Numbers Mean? Here's each number and letter in order, as well as what it represents. A more detailed explanation of each characteristic is below. 255 - This is the tire's width in millimeters. 45 - This is the tire's sidewall height, expressed as a percentage of the width figure, also known as an aspect ratio. R - This is the tire's type of construction, and is almost always an R. 15 - This is the wheel diameter the tire is designed for, listed in inches.
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How to determine the age of your tires For tires manufactured before the year 2000. The date of manufacture is the last three digits of the code. The first two digits refer to the week within that year. For example, if the last 3 digits are 022, it means that the tire was manufactured in the second week of the year, and the year is the second year of the decade.
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Tire Size 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. Is the ratio of the height of the tire's cross-section to its width.
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Tire code This code specifies the dimensions of the tire, and some of its key limitations, such as load-bearing ability, and maximum speed. Sometimes the inner sidewall contains information not included on the outer sidewall, and vice versa.
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- Reading tire date codes. Located on the tire sidewall near the edge of the rim. Part of a long alphanumeric serial number starting with DOT. 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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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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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 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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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 Size 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. The two-digit number after the slash mark in a tire size is the aspect ratio.
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- Technical Info and FAQs. Clearance. The numbers in the tire size refer to its width, aspect ratio, and wheel diameter. 205/55R16 means the tire is 205 mm wide, has an aspect ratio (that is, the width divided by the height) of 55%, and fits on a 16 rim.R means radial tire.
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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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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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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. 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..
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Tire Size Aspect Ratio. Is the ratio of the height of the tire's cross-section to its width. 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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- The letter codes no longer correspond to the tire width, since narrow tires are often made for rim sizes that originally took wide tires; for example, 700 C was originally a wide size, but now is available in very narrow widths, with actual diameters as small as 660 mm.
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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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- Meaning of tires numbers : The each and every tires on mention the unique number for each company. The our company are provide registration number and transport number are unique. The meaning of these number as tire measured the distance in millimeters from sidewall to sidewall. The show first three numbers or digit are mention or show size refer to tires width. For example P2 315/75 R15 the tires width is 315 millimeters. R denotes that it is a radial construction
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Tire Size 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. 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. Construction. The letter R in a tire size stands for Radial, which means the layers run radially across the tire.Wheel Diameter is the size of the wheel measured from one end to the other. It tells us the size of the wheel that the tire is intended to fit. A size P215/65 R15 tire is made for a wheel with a 15 diameter.he letter R in a tire size stands for Radial, which means the layers run radially across the tire. Wheel Diameter is the size of the wheel measured from one end to the other. It tells us the size of the wheel that the tire is intended to fit. A size P215/65 R15 tire is made for a wheel with a 15 diameter.
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Tire code The tires on a Hummer H1 might be labeled: 37X12.5R17LT. 1  37 - the tire is 37 in (940 mm) in diameter. 2  12.5 - the tire has a cross section of 12.5 in (320 mm) 3  R - this is a radial tire. 4  17 - this tire fits 17 in (430 mm) wheels. 5  LT - this is a light truck tire.