The last four digits, 3607, mean this tire was manufactured in the 36th week of 2007. On this page you'll find a color-coded explanation of the 265-70R17 tire code. This simply tells you that it is a passenger vehicle tire, at least one standardized to American designation. Wheel Size Basics | Rim Size | Discount Tire DOT Tire Identification Number (TIN) | TireBuyer.com What do all those numbers and letters mean on my tires, anyway? How to Read & Determine Tire Size for Your Vehicle The middle number between the "x" and the "-," indicates the tire's width. Tire Positions 101 | BFGoodrich Truck Tires This refers to the profile height of the sidewall, or the height of the sidewall as a percentage of the tread width. ThermALERT ready. 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). Style 3 tires: The number before the X is the overall tire diameter. The first number, 30, represents a different measurement on tires than it does on rims. Is the installation challenging? 70. The "P" is short for "P-metric," which is a designation by the Tire and Rim Association for a "passenger car" tire type. Typical low aspect truck tire ratios are 70 percent, 75 percent . Numbers 55: The next two numbers we find on our tire tells us the Aspect Ratio. The longer number set is more widely known on all tires after the year 2000. This ply rating is intended to indicate the strength of the tires construction relative to other ply ratings. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 70% of the width. I'd like to tell you about the truck updates. Let's take a typical dirt bike tire size and break the numbers down, one by one. A tire with a rating of 300 is expected to last three times as long.</p> <p>UTQG testing is conducted by the manufacturer of the tire. 31182-70 Electrical Cable, 70 Feet. Divide this number by 25.4 to convert to inches. You can see your original equipment tire size in your owner's manual or on the placard . The number after the forward slash (/) is the tire width. For truck or trailer tire sizing, three numbers are used, followed by a slash and then a two-number designation then either a B for bias or an R for radial tire types and finally another two-number designation that represents the size of your rim. The next series of numbers and letters (77H) will be the speed rating and load index of the tire. This video will explain how to decipher tire and wheel size, tire construction, speed rating, and load rating.See http:. An 11R22.5 tire will be approximately 11 inches wide and 9.5 inches high. (2) 7/7/3 Manufacturer's Limited Casing Warranty: 700,000 miles, 7 years, or 3 retreads for MICHELIN ® XDA3 ® and XDA ® ENERGY tires. The letter following the profile height identifies the tire's construction. The first letter on a tire indicates the tire's class. 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. In the absence of the decade triangle, this tire would have been made during the 51st week of 1987. Road bike tires generally come in three widths: 23c, 25c, and 28c (their width in mm). The DOT number is used for safety standard certification and also in the event of a tire recall by the manufacturer. If you see a letter and number combo listed after a tire size, that is a tire "service description." Service descriptions all have a load and speed index, which are easily converted from a number of commonly available tables. The ninth and tenth characters tell the week the tire was manufactured. The 33" refers to the width of the tire (285) multiplied by the height percentage of the sidewall (75), in millimeters, x2 because there are two sidewalls, divided by 25.4 (inches) plus the wheel size in inches (16"). For most vehicles, you'll see the letter "P" before the number sequence begins: P225/70R16 91S. 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. The example tire would be designed to fit a 16-inch wheel. The last four numbers indicate the week and year your tire was made, respectively. The recommendations made in this article are based on the use of a Coats 1250 tire/wheel bal-ancer. In this example, the 45 indicates that the sidewall distance, from the wheel rim to the outside of the tread, is 45% of the section width. 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). The flange is a bulge located on the wheels right in the location where the tire bead sits. The number after the dash is the rim diameter. If you need further assistance reading tire marks check article: Tire Codes - What Do They Mean?. Some tires carry "W" or "Y" speed ratings. 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. Tire sizes range from 125-135-145-155-165-175-185-195-205-215-225-235 . There are other brands of wheel balancers on the market, and this does not mean that we endorse any one brand over another. In a two-digit system, the first number is the width of the tire, and the second number is the rim. When comparing a 33" tire to a 285 wide tire, you are essentially talking about two completely different measurements. The second number represents the width of the tire. This number refers to the rim . 245. Which parts and accessories are essential? The numbers 22-11-10 represent the dimensions of the tire. 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. The letter is the speed rating, or the maximum speed the tire is built for. Same number should appear on sidewall of mounted tire, so, no compromise here. 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. Note: If the rim has a tire on it, usually the tire will have the rim diameter Typically following the section width is the sidewall aspect ratio or profile (55). This video will explain how to decipher tire and wheel size, tire construction, speed rating, and load rating.See http:. A grade of 300 denotes a tire that will wear three times as well as a tire graded 100. The DOT numbers on tires approve that the tire manufacturer meets all the safety criteria of this organization. The first number before the "x" indicates the tire's diameter when inflated and not under load. So if you are looking at a rear-wheel for a dirt bike, you might see: 120/100-18 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. Inch sizes are not precise and lack accuracy. 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. For example: In the diagram below, the offset is 3+2; meaning the inside half of the wheel measured 3 inches, and the outside (valve stem side) measured 2 inches. The Tire Rack website is down for scheduled maintenance. Video Review: What do the numbers on tires mean diagram? It is the most commonly used system for motorcycle tires, which is a set of three numbers and letters implying the width of the tire, the aspect ratio of the tire (ratio of tire's height to the width) . The final number (s) signifies the year the tire was manufactured. Less expensive tires often suffer from this issue. It doesn't necessarily mean that the tire is manufactured with this specific number of plys or layers. Steer tires are the most important tires on your truck, designed to perform their best in the front (steer) axle position. This is helpful if a previous axle spacing report has axle spacing and tire values that close resemble the desired vehicle configuration. Learn About Tire Sizes Example B : 285/75R16 On metric tires the first number is your width of the tire in millimeters. 18 = refers to the diameter of the tire, in inches. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 75% of the width. The number after the slash is the aspect ratio. Wheel Size Basics. 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. 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 . The ATV tires within this category are all available in the selected size; 22x11-10. The first number is your overall diameter of the tire. See limited warranty for details. In this example the tire diameter or "height" is 33 inches tall. P 185 / 60 R14 M/C 82H In addition to the tire size, there are other parameters on the tire sidewall as well. 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. Tires built since January 1, 2000. 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. What do the Tire Size Numbers mean? This number means that your tire has an aspect ratio of 70%. The number of toe is usually only a fraction of a degree. 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 . 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. We suggest that you Add these 2 numbers together to find the total width of the rim (5 inches). P denotes passenger-car tire. But the numbers are . The number is the load rating, or the amount of weight that it can handle. This will become the second number for a traditional tractor tire size. Additionally, some tires use rim diameters in millimeters, but these are rare. This number indicates that your tire has a width of 265 millimeters. A few of them are: The brand name Tire performance specification criteria Winter tire symbol UTQG ratings DOT tire identification number Most often, any tire you view will start with a "P.". A common sizing system for wheelbarrow and hand-cart tires are 2 numbers, separated by a hyphen. The first number is the height of the tire sidewall, and the second number is the rim diameter. I'm Michael. 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. I recommend you the best ones. This number refers to the width of the 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. The number 235 is the cross-section width in millimeters, and 65 is the . Tires with the lowest speed ratings are usually listed as "A" followed by a number- for example, "A1," "A2, "A3," and so on. Treadwear grade: A government-required number that indicates a tire's expected wear. Ever wondered what tire numbers mean? 12″ = refers to the diameter of the rim, in inches. They influence handling and ride, offering ribbed tread designs to help channel water away from the tire. 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. Ever wondered what tire numbers mean? This number indicates that your tire has a width of 245 millimeters. After all, getting the right tires for your car is crucial. It's just like getting an actual pair of shoes for your fleshy feet. Photos, diagrams and background information were supplied by Hennessey Industries' Coats brand. We apologize for any inconvenience to you and will have the site back up as soon as possible. The dash "-" indicates the tire construction is bias-ply, but this could be an "R" if the tire is radial. What do the B, C, E, etc. On a rim, 30 represents the inner width between the flanges in millimeters, as demonstrated in the accompanying diagram for this section. The traction grades, from highest to lowest, are "AA," "A," "B," and "C." If a tire is designed for extra traction . For example, in the graph shown above, the tire is an LT305/70R17. For one thing, cheaper tires are not subject to as many quality control protocols. This system measures the size in millimeters. The Uniform Tire Quality Grading (UTQG) scale indicates a tire's stopping ability on wet surfaces. To find out when your tire was made, look for the serial number that begins with 'DOT.'. By Michael Davis. Enter the desired axle spacing report number and click Look Up. The better the grade, the shorter the stopping distance on wet pavement when a set of that particular tire is fitted to a vehicle. Load range The third number in our lawn tractor tire size is 6. Example 2: 18 x 8.50 - 12″. Tire size can be confusing. In our example, the 55 means that the sidewall height is 55% of the 205-mm tread width. Tire Size Numbers The tire size numbers should be readily visible on the outside wall of the tire. What do the numbers mean on a dirt bike tire? Golf cart tires, lawn mower tires, and other lawn/garden tires are often marked in this manner. And the number after the dash (-) is the rim diameter. The number is a metric figure standing for the width of the tire in millimeters. Locate your tire size on the sidewall of the tire. 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. Style 2 tires: The number before the forward slash (/) is the tire section height. outside (valve stem side). To help you along, what you need, ladies and gentlemen, is a tire size chart. 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. Part Number Description 31082-00 Control Box Assembly (includes Primary In-Line Filter). In other words, a 10-16.5 tire . This is the common and reliable way to read your complete tire specifications like the time and the place of production. The width of the tire can vary from 125 mm to 335 mm. H2 - This is the kind of flange the wheels have. If your tire size has two sets of numbers (10-16.5, 12.4-16, or 18.4R28), here is what the size numbers mean. In our first example of tire size 10-16.5, the first number 10 is the width of the tire in inches. Do you need a tonneau cover or subwoofers for your vehicle? Actual on-road savings may vary. The number after the X is the tire . On a tire, 30 represents the inflated tire width in millimeters. Tire Size Explained: What the Numbers Mean. Plus, the right size for your car, truck, or trailer can differ depending on where and how you drive. Some may start with an LT prefix, used on heavy-duty trucks. Some trailer tire manufacturers suggest three to five years is the average life expectancy of a . The number following the construction code is the size of the wheel that the tire will fit in inches. On the sidewall of any tire, you will see a string of numbers. The three-number lawn tractor tires numbering system works a bit differently. Example: 205 / 55 R16 91 W The numbers in the tire size refers to different parts of the tire. 265. 4 MICHELIN ® TRUCK TIRE REFERENCE CHART DRIVE TIRES (1) Fuel savings are estimates based on comparative rolling resistance. Size: P235/65R17 is a common one. What does the 225 in a tire size mean? This number means that your tire has an aspect ratio of 75%. The final number simply is the wheel size or "diameter" of the wheel that the tire will fit on. Proactive car owners can prevent tire runout in a number of ways. 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 . MERITOR TIRE INFLATION SYSTEM CONTROL BOX COMPONENTS Part Number Description 31023-01 Primary Pressure Protection Valve Assembly. The DOT tire identification number indicates compliance with all safety standards established by the U.S. Department of Transportation and provides additional information about the tire manufacturer. 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. Letter R: Letter R refers to how the tire was made. The treadwear rating test uses a reference tire, and the number (with a baseline of 100) indicates how much longer your tire can last, relative to the reference tire. This means that the tire is 195 mm wide. The last three digits, 517, plus the triangle mean this tire was manufactured in the 51st week of 1997. The number is the load rating, or the amount of weight that it can handle. 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. 15×6.00-6 is a common size. 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