This video will explain how to decipher tire and wheel size, tire construction, speed rating, and load rating.See http:. They influence handling and ride, offering ribbed tread designs to help channel water away from the tire. For most vehicles, you'll see the letter "P" before the number sequence begins: P225/70R16 91S. Let's take a typical dirt bike tire size and break the numbers down, one by one. Other examples include 11 x 4.00 x-5″ and 9 x 3.50-4″ tires. Do you need a tonneau cover or subwoofers for your vehicle? 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. 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 last four numbers indicate the week and year your tire was made, respectively. As an example, a tire rated 90R could safely . Tire Size Chart : Tires Sizing and Dimensions explained (2021) Tire Valve Stem: Types, Caps, Cores and Replacements ... The number after the X is the tire . 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. 15×6.00-6 is a common size. On this page you'll find a color-coded explanation of the 265-70R17 tire code. Meritor Tire Inflation System (Mtis) by Psi™ How to read a lawn tractor tire size An example of tractor tire sizes expressed in the standard format would be "14.9-42". What Do Tire Numbers Mean - How To Read Tire Numbers How to Read a Tire Sidewall | BFGoodrich Tires How to Read Tire Size The two-digit number that usually follows the tire's section width tells us the aspect ratio, or tire profile measurement. Our primary example will be based on variations of the 225/50R16 size, although other sizes will appear. So, let's look at what those letters and numbers mean. Thus, a tire with the measurement "P225" is for a passenger vehicle and has a nominal width of 225 millimeters. In our example, the 55 means that the sidewall height is 55% of the 205-mm tread width. Tires with diameters 622 mm and 635 mm are both classified as 28-inch. The third number in our lawn tractor tire size is 6. 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. Reading a Sidewall | Toyo Tires Canada What size is a wheelbarrow wheel? - FindAnyAnswer.com H2 - This is the kind of flange the wheels have. 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) . 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. outside (valve stem side). 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. 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 . A date code of 2615 means the tire was made in the 26 th week of 2015. 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. The dash "-" indicates the tire construction is bias-ply, but this could be an "R" if the tire is radial. Video Review: What do the numbers on tires mean diagram? ThermALERT ready. Ever wondered what tire numbers mean? Testing Entry Level Ultra High Performance All-Season Tires 2020: RIKEN Raptor ZR A/S. Toe should be adjusted to guarantee all wheels roll parallel together in synchrony. When comparing a 33" tire to a 285 wide tire, you are essentially talking about two completely different measurements. By Michael Davis. This ply rating is intended to indicate the strength of the tires construction relative to other ply ratings. DOT. The tire numbers include: 14.5", 14.5", 16.5", 16.5", 19.5". 75. The number of toe is usually only a fraction of a degree. The ninth and tenth characters tell the week the tire was manufactured. 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. This code is presented the same for either Metric or Alpha/Numeric tires. (2) 7/7/3 Manufacturer's Limited Casing Warranty: 700,000 miles, 7 years, or 3 retreads for MICHELIN ® XDA3 ® and XDA ® ENERGY tires. Since this measure is affected by the width of the rim, the measurement . When it comes to choosing width, there are two major factors at play. Steer tires are the most important tires on your truck, designed to perform their best in the front (steer) axle position. Tires built before 2000. Wheel Size Basics. The number after the forward slash (/) is the tire width. This number refers to the width of the tire. 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 The first number before the "x" indicates the tire's diameter when inflated and not under load. 245 =Section WidthTread (mm) For example, in the graph shown above, the tire is an LT305/70R17. The sidewall height, from rim to tread, is 55 % of the section width of 205, or 112.75 . Tires with the lowest speed ratings are usually listed as "A" followed by a number- for example, "A1," "A2, "A3," and so on. This number refers to the rim . The better the grade, the shorter the stopping distance on wet pavement when a set of that particular tire is fitted to a vehicle. These numbers sit in the same order on most dirt bike tires. On the sidewall of any tire, you will see a string of numbers. Proactive car owners can prevent tire runout in a number of ways. MERITOR TIRE INFLATION SYSTEM CONTROL BOX COMPONENTS Part Number Description 31023-01 Primary Pressure Protection Valve Assembly. Road bike tires generally come in three widths: 23c, 25c, and 28c (their width in mm). High-quality tires should be manufactured using segmented molds. The last three digits, 517, plus the triangle mean this tire was manufactured in the 51st week of 1997. Which parts and accessories are essential? The DOT number is used for safety standard certification and also in the event of a tire recall by the manufacturer. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 75% of the width. What do the B, C, E, etc. The number after the slash is the aspect ratio. The first number is the height of the tire sidewall, and the second number is the rim diameter. This refers to the profile height of the sidewall, or the height of the sidewall as a percentage of the tread width. The final number indicates the width of the rim. Some may start with an LT prefix, used on heavy-duty trucks. Golf cart tires, lawn mower tires, and other lawn/garden tires are often marked in this manner. The number is the load rating, or the amount of weight that it can handle. Tire Size Numbers The tire size numbers should be readily visible on the outside wall of the tire. Part Number Description 31052-35 1/4" Tubing, 35 Feet. 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 . We suggest that you In other words, a 10-16.5 tire . Learn About Tire Sizes Example B : 285/75R16 On metric tires the first number is your width of the tire in millimeters. Poor toe alignment, whether positive or negative, reduces steering ability and causes tires to wear prematurely. For example, diameters 559 mm (MTB), 571 mm (Triathlon) and 590 mm (Touring) are all classified as 26 inch. Tire size can be confusing. 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. Enter the desired axle spacing report number and click Look Up. The aspect radio tells us which is the ratio of the tire's width to its height. On a tire, 30 represents the inflated tire width in millimeters. Tire sizes range from 125-135-145-155-165-175-185-195-205-215-225-235 . How to read tire size with a metric measurement is a little more difficult and usually takes a calculator to get exactly right. 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. On a rim, 30 represents the inner width between the flanges in millimeters, as demonstrated in the accompanying diagram for this section. This system measures the size in millimeters. Letter R: Letter R refers to how the tire was made. The second number in the example 16.5, is the actual diameter measurement of the wheel that the tire fits. Numbers 55: The next two numbers we find on our tire tells us the Aspect Ratio. That is the tire profile or section width. The size could also be a series of 3 numbers separated by an "X" or a "/". 8.50 = refers to the width of the tire, in inches. I recommend you the best ones. A grade of 300 denotes a tire that will wear three times as well as a tire graded 100. The second number of the off-road size measurement is the width of the tire, expressed in inches. In most cases with inch measurement tires the width will have a .50 decimal after the initial number. Is the installation challenging? Oddly enough, tires with an inner diameter of 630 mm are classified as 27-inch. The width of the tire is shown in mm (millimeters). As an example, a tire rated 90R could safely . Load range In this regard, what does tire size 22x11 10 mean? Such tires are for specific use and not to be mixed with regular tires. This number means that your tire has an aspect ratio of 75%. The final number (s) signifies the year the tire was manufactured. What do all those numbers and letters mean on my tires, anyway? So if you are looking at a rear-wheel for a dirt bike, you might see: 120/100-18 The next series of numbers and letters (77H) will be the speed rating and load index of the tire. The middle number between the "x" and the "-," indicates the tire's width. 31182-70 Electrical Cable, 70 Feet. Most often, any tire you view will start with a "P.". These indicate different purposes. Treadwear grade: A government-required number that indicates a tire's expected wear. Example 2: 18 x 8.50 - 12″. This is helpful if a previous axle spacing report has axle spacing and tire values that close resemble the desired vehicle configuration. 245. • Axle Spacing Report Number -Allows an existing axle spacing report to be displayed (for axle spacing report numbers 10001 and greater only). On this page you'll find a color-coded explanation of the 245-75R17 tire code. The two most common sizes are 4.00 - 6 and 4.10 - 6. The first letter on a tire indicates the tire's class. Style 3 tires: The number before the X is the overall tire diameter. Additionally, some tires use rim diameters in millimeters, but these are rare. The first number (205) identifies the section width, or the cross section, in millimeters.. See limited warranty for details. 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. 265. 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 "P" is short for "P-metric," which is a designation by the Tire and Rim Association for a "passenger car" tire type. But the numbers are . The ply rating on trailer tires typically varies between 2(A) and 10(E). Some tires carry "W" or "Y" speed ratings. Tire width always refers to the measurement from one sidewall to another. And the number after the dash (-) is the rim diameter. In this example our tire will be roughly 6" inches wide. In the absence of the decade triangle, this tire would have been made during the 51st week of 1987. Manufacturers may also insert "Z" into the size description (in the tire code data between aspect ratio and diameter) for these kinds of tires. This number means that your tire has an aspect ratio of 70%. The recommendations made in this article are based on the use of a Coats 1250 tire/wheel bal-ancer. This video will explain how to decipher tire and wheel size, tire construction, speed rating, and load rating.See http:. The final number simply is the wheel size or "diameter" of the wheel that the tire will fit on. A common sizing system for wheelbarrow and hand-cart tires are 2 numbers, separated by a hyphen. The height of the tire from rim to tread will be 88 percent of the width. In this example the tire diameter or "height" is 33 inches tall. The number after the dash is the rim diameter. I'm Michael. 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 . 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. Hello, guys. 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