Steer tires are the most important tires on your truck, designed to perform their best in the front (steer) axle position. • Axle Spacing Report Number -Allows an existing axle spacing report to be displayed (for axle spacing report numbers 10001 and greater only). Tire Traction Ratings | HowStuffWorks Hello, guys. The DOT number is used for safety standard certification and also in the event of a tire recall by the manufacturer. Tire size can be confusing. In this example our tire will be roughly 6" inches wide. For instance, M/C indicates that the tire is for motorcycles only. Tires built before 2000. What do all those numbers and letters mean on my tires, anyway? DOT Tire Identification Number (TIN) | TireBuyer.com P designates this tire as a passenger car tire, an LT before the tire size would mean the tire is a light truck tire, and a European metric tire would have no letter before the tire size. That is the tire profile or section width. The final number indicates the width of the rim. Understanding Tire Numbers and Letters - Reasonable Rides The first number is the height, the second number is the width & the third number is the diameter of rim that it will fit on. The DOT numbers on tires approve that the tire manufacturer meets all the safety criteria of this organization. This number indicates that your tire has a width of 265 millimeters. It doesn't necessarily mean that the tire is manufactured with this specific number of plys or layers. A car producer stocks three types of tires: A, B, and C. Let P(A) = 0.40, P(B) = 0.15 and P(C) = 0.45. The numbers 22-11-10 represent the dimensions of the tire. Poor toe alignment, whether positive or negative, reduces steering ability and causes tires to wear prematurely. What does the 225 in a tire size mean? See limited warranty for details. 75. This ply rating is intended to indicate the strength of the tires construction relative to other ply ratings. 245. Holding the shift key and clicking refresh may resolve this issue. Locate your tire size on the sidewall of the tire. What Do Size Markings On Bicycle Tires Mean? In our example, the 55 means that the sidewall height is 55% of the 205-mm tread width. Oddly enough, tires with an inner diameter of 630 mm are classified as 27-inch. The number is the load rating, or the amount of weight that it can handle. The number of toe is usually only a fraction of a degree. The "P" is short for "P-metric," which is a designation by the Tire and Rim Association for a "passenger car" tire type. Same number should appear on sidewall of mounted tire, so, no compromise here. The two-digit number that usually follows the tire's section width tells us the aspect ratio, or tire profile measurement. ThermALERT ready. The final number (s) signifies the year the tire was manufactured. A "P" signifies the tire was designed to primarily be used on passenger vehicles, which can include cars, minivans, SUV's and other light-duty pickup trucks. MERITOR TIRE INFLATION SYSTEM CONTROL BOX COMPONENTS Part Number Description 31023-01 Primary Pressure Protection Valve Assembly. Plus, the right size for your car, truck, or trailer can differ depending on where and how you drive. Tire sizes on modern vehicles typically start at 13-inches and go up to 18-inches, but aftermarket and special package wheels can be 22-inches or even larger. This code is presented the same for either Metric or Alpha/Numeric tires. 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. Tire Size Explained: What Do All the Numbers Mean? - The ... RV Tires 101: Markings & Understanding Your Tires - Where ... Inch sizes are not precise and lack accuracy. The first number before the "x" indicates the tire's diameter when inflated and not under load. An 11R22.5 tire will be approximately 11 inches wide and 9.5 inches high. 4.80/4.00-8" Flat Free Tire 4.00-6" LP Flat Free Tire Universal Fit Wheelbarrow Tire - Flat Free 16 x 1.75" Flat Free Cart Tire 20 x 2.0" Flat Free Cart Tire 24 x 2.0" Flat Free Cart Tire Hand Truck Tires All-position tires are mostly built with the steer axle in mind, but also perform well on the drive and trailer axles. How to Read & Determine Tire Size for Your Vehicle One size too small, and it'll pinch your bones together. The width of the tire can vary from 125 mm to 335 mm. The tire numbers include: 14.5", 14.5", 16.5", 16.5", 19.5". Typically following the section width is the sidewall aspect ratio or profile (55). Prevention. P 185 / 60 R14 M/C 82H In addition to the tire size, there are other parameters on the tire sidewall as well. The ninth and tenth characters tell the week the tire was manufactured. In other words, a 10-16.5 tire . If you need further assistance reading tire marks check article: Tire Codes - What Do They Mean?. Do you need a tonneau cover or subwoofers for your vehicle? For example, a tire size of P225/55 R15 tire, the 55 means that the height is equal to 55% of the tire's width. Are 33-Inch Tires the same as 285's (Metric Vs MM ... According to current regulations, the DOT Tire Identification Number must begin with the letters "DOT" followed by a series of characters (usually 10, 11, or 12 numbers, letters, or symbols). Motorcycle Tire Size Meaning Explained Metric System. The percentage of defective tires is 2%, 1% and 5%, respectively.Someone picks a tire off the shelf at random and it is Brand A.If you want to know the probability that it is a defective tire (event D), which formula would you use? Manufacturers may also insert "Z" into the size description (in the tire code data between aspect ratio and diameter) for these kinds of tires. For example, diameters 559 mm (MTB), 571 mm (Triathlon) and 590 mm (Touring) are all classified as 26 inch. Tires built since January 1, 2000. Photos, diagrams and background information were supplied by Hennessey Industries' Coats brand. Tire width always refers to the measurement from one sidewall to another. Toe should be adjusted to guarantee all wheels roll parallel together in synchrony. This number indicates that your tire has a width of 245 millimeters. The width of the tire is shown in mm (millimeters). An example of tractor tire sizes expressed in the standard format would be "14.9-42". The sidewall height, from rim to tread, is 55 % of the section width of 205, or 112.75 . So if you are looking at a rear-wheel for a dirt bike, you might see: 120/100-18 In our first example of tire size 10-16.5, the first number 10 is the width of the tire in inches. The last four numbers indicate the week and year your tire was made, respectively. The first number is your overall diameter of the tire. What do the Tire Size Numbers mean? The third number in our lawn tractor tire size is 6. Enter the desired axle spacing report number and click Look Up. If we assume that the numbers are not worn away on your deck and example is 32-622 on your bicycle tires, describes the 622 tire diameter, while the 32 stands for the width of your bike tires. This system measures the size in millimeters. For example, in the graph shown above, the tire is an LT305/70R17. Tire Size Chart - Width of the tire. When it comes to icing up the whip with a set of fresh rims, there's a lot to take into account, including everything from style, finish and brand to price, weight and construction type.But wheel size, easily one of the most important factors, can be a bit of a challenge to understand. The traction grades, from highest to lowest, are "AA," "A," "B," and "C." If a tire is designed for extra traction . This video will explain how to decipher tire and wheel size, tire construction, speed rating, and load rating.See http:. If we were converting the width of our tire in the picture above to an off-road dimensional reading, we would take the width (245 millimeters) and divide it by an adjustment factor of 25.4 to equal 9.64 inches. What do the numbers mean on a dirt bike tire? Each section of small print on a tire's sidewall means something: Tire Type The P designates that the tire is a passenger vehicle tire. Tubeless Rubber Snap-in Valves If you drive a regular passenger vehicle, such as a standard-size car or a minivan; a light truck; or a light-duty trailer, then you will likely be interested . In the absence of the decade triangle, this tire would have been made during the 51st week of 1987. Current regulations require that Tire Identification Numbers begin with the letters "DOT," followed by eight to thirteen characters (see 12-character example in photo below) that can be used to identify the manufacturing location, tire size and manufacturer's specifications, along with the week and year the tire was manufactured. 12″ = refers to the diameter of the rim, in inches. But the numbers are . Ever wondered what tire numbers mean? The second number of the off-road size measurement is the width of the tire, expressed in inches. By Michael Davis. Actual on-road savings may vary. The recommendations made in this article are based on the use of a Coats 1250 tire/wheel bal-ancer. This means that the tire is 195 mm wide. Learn About Tire Sizes Example B : 285/75R16 On metric tires the first number is your width of the tire in millimeters. After all, getting the right tires for your car is crucial. The number after the slash is the aspect ratio. Since this measure is affected by the width of the rim, the measurement . Size: P235/65R17 is a common one. A date code of 2615 means the tire was made in the 26 th week of 2015. There are other brands of wheel balancers on the market, and this does not mean that we endorse any one brand over another. The number following the construction code is the size of the wheel that the tire will fit in inches. The three-number lawn tractor tires numbering system works a bit differently. This is helpful if a previous axle spacing report has axle spacing and tire values that close resemble the desired vehicle configuration. On the sidewall of any tire, you will see a string of numbers. On a rim, 30 represents the inner width between the flanges in millimeters, as demonstrated in the accompanying diagram for this section. The second number in our lawn tractor tire size is 6. The first number represents the overall WIDTH when mounted and inflated to the proper air pressure but it is measured in millimeters. Letter R: Letter R refers to how the tire was made. Style 3 tires: The number before the X is the overall tire diameter. For one thing, cheaper tires are not subject to as many quality control protocols. The Uniform Tire Quality Grading (UTQG) scale indicates a tire's stopping ability on wet surfaces. The flange is a bulge located on the wheels right in the location where the tire bead sits. As an example, a tire rated 90R could safely . The number after the forward slash (/) is the tire width. Golf cart tires, lawn mower tires, and other lawn/garden tires are often marked in this manner. To find out when your tire was made, look for the serial number that begins with 'DOT.'. The middle number between the "x" and the "-," indicates the tire's width. The first number, 30, represents a different measurement on tires than it does on rims. Such tires are for specific use and not to be mixed with regular tires. So, let's look at what those letters and numbers mean. 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. Additionally, some tires use rim diameters in millimeters, but these are rare. I'd like to tell you about the truck updates. If you are purchasing a new off-road . This number means that your tire has an aspect ratio of 70%. In most cases with inch measurement tires the width will have a .50 decimal after the initial number. On a tire, 30 represents the inflated tire width in millimeters. Let's take a typical dirt bike tire size and break the numbers down, one by one. 18 = refers to the diameter of the tire, in inches. If you look at the photo from reasonablerides.com below, you'll notice that the tire is coded thus: 255/45ZR20 105W XL M+S. Some other designations are LT for light truck, and T for temporary, or spare tires.. Tire Width The 235 is the width of the tire in millimeters (mm), measured from sidewall to sidewall. This doesn't mean the tire mounts on a 6" wide wheel, normally the tire width will be wider then rim width. The width always goes in steps of 10 mm. Just because the "tire size" is the same size that your wheel or rim will "accept" does not mean that that tire is a good fit for your motorcycle or your riding style. The second number represents the width of the tire. I'm Michael. High-quality tires should be manufactured using segmented molds. The number after the dash is the rim diameter. Some numbers on the sidewall are listed in millimeters while others are inches. To help you along, what you need, ladies and gentlemen, is a tire size chart. Less expensive tires often suffer from this issue. The number is the load rating, or the amount of weight that it can handle. Check out each chart below, which details the tire valve stem design numbers for each type and dimension, as assigned by The Tire and Rim Association (TRA). I recommend you the best ones. This number refers to the width of the tire. Part Number Description 31052-35 1/4" Tubing, 35 Feet. If a tire size has three sets of numbers (15x6.00-6, 26x12.00-12, 31x15.50-15), then the first number ( 26 x12.00-12) is the approximate height in inches, the second number (26x 12.00 -12) is the approximate width in inches, and the third number (26x12.00- 12) is the rim diameter in inches. Load range Letter R: Letter R refers to how the tire was made. Tires with diameters 622 mm and 635 mm are both classified as 28-inch. The example tire would be designed to fit a 16-inch wheel. If you find the width of your bike tires minor, simply use the diameter, which in this example is 622 Remember, however, that the rim of your bicycle . On this page you'll find a color-coded explanation of the 245-75R17 tire code. The "14.9" means the tire is 14.9 inches wide and the "42" tells us that this tire fits a 42-inch diameter wheel. DOT. Example: 205 / 55 R16 91 W The numbers in the tire size refers to different parts of the tire. The first number is the height of the tire sidewall, and the second number is the rim diameter. There are also tires with irregular rim diameters that are often used for box vans, heavy-duty light trucks and trailers. A 275/80R22.5 tire is 275 millimeters wide 220 millimeters high. 4 MICHELIN ® TRUCK TIRE REFERENCE CHART DRIVE TIRES (1) Fuel savings are estimates based on comparative rolling resistance. Video Review: What do the numbers on tires mean diagram? 31182-70 Electrical Cable, 70 Feet. Is the installation challenging? Located on the sidewall of a tire, the complete DOT tire identification number is a combination of up to 12 numbers and letters that provide . Ever wondered what tire numbers mean? The next series of numbers and letters (77H) will be the speed rating and load index of the tire. Typical low aspect truck tire ratios are 70 percent, 75 percent . The letter at the end of a tire size is a throwback to an old French system when the letters a, b and c designated different inner tire diameters - it DOES NOT stand for cm. A common sizing system for wheelbarrow and hand-cart tires are 2 numbers, separated by a hyphen. It's just like getting an actual pair of shoes for your fleshy feet. In this example the tire diameter or "height" is 33 inches tall. Second, the manufacturers of such wheels often use inferior wheel molds. 70. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 70% of the width. On this page you'll find a color-coded explanation of the 265-70R17 tire code. Part Number Description 31082-00 Control Box Assembly (includes Primary In-Line Filter). For most vehicles, you'll see the letter "P" before the number sequence begins: P225/70R16 91S.

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