In the case of a 1930 or 1931 Ford Model A, the original tire size was 4.75-19. Through the years, popular tire sizes were combined, resulting in the current availability of 475/500-19 tires. This combination of similar sizes mostly applies to tires produced in the 1920's and 1930's. Many of the early Numeric sized tires feature nearly a 100
The last letter in a standard tire size indicates the number of layers used in the construction of the tire. If there is no letter, the tire has the standard 4 plies. A “C” indicates 6 plies, a “D” indicates 8 plies, and an “E” indicates 10 plies. The higher the number of plies in a tire, the stronger the tire is and the more air
Check your owner’s manual. Check the size of your current tires. Look for the size on the driver’s side door jamb or inside the glove box door. You’ll find a series of numbers and symbols similar to P215/60 R17 S. These are the most important figures to pay attention to.
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Locate your tire size on the sidewall of the tire. The first number represents the overall. WIDTH when mounted and inflated to the proper air pressure but it is measured in millimeters. Divide this number by 25.4 to convert to inches. This will become the second number for a traditional ATV tire size. The second number represents the aspect Find the information in your vehicle owner’s manual in the glove compartment or on the tire information sticker on your driver’s side door. Usually those elements contain all the information related to your tire size and specifications as well as the appropriate tire pressure.

Measure the outside tire diameter. To get the tire size, measure the outside diameter of the tire. Sometimes, the overall tire size is written along the sidewall of your tire. Though this won’t provide you with information regarding your hub length and bearing size (those are separate measurements), it will help determine which tire size you

In this case 126 mm (3 mm on each side). Now let’s see what is 70 (120/ 70 ZR17). This number designates the height of the tire section, but as a percentage of the width (120mm). This means that the section height will be 70% of 120. In other words: 120 x 70 / 100 = 84mm. The width of the tire is shown in mm (millimeters). In the example above, the number 195 can be seen. This means that the tire is 195 mm wide. The width of the tire can vary from 125 mm to 335 mm. The width always goes in steps of 10 mm. Tire sizes range from 125-135-145-155-165-175-185-195-205-215-225-235, etc. For example, if your tire had "1613" listed, it was manufactured on the 16th week of 2013. If you come across a three-digit number, you have a tire that was manufactured before 2000. A DOT tire Quick Facts About Numbers on Tires. Numbers on a tire include more than dimensions. The markings indicate maximum speed, load limits, and more. Manufacturers strongly recommend you use tires To measure the sidewall height of a tire, begin your measurement at the top of the wheel and go up to the highest point of the tire. This will tell you your sidewall height. You can also calculate the sidewall height based on the tire size read from the sidewall. For example, P235/60R15 tire size will be 235 millimeters across the top of the tire.
Step 1: Put the Bike Upright. Set up your bike with a kickstand, or you can also lean it up on a wall. A firmly held bike is easier to measure. It will also avoid movements that may affect your measurement accuracy. Three ways you can measure your tire are: by using a ruler, calipers, or a retractable measuring tape.
To find the measurement of your bike tire simply look along the sidewall of your tire until you see a series of numbers printed. These will look like “700x32c” or “26×1.95” or “20-559”. This is the size of your tire. Read on for more details and my recommended tires for the most common tire sizes.
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How to read the tyre sizes. Let’s take the tyre above as an example. The tyre size is: P205/65 R16 95V. The first number is the width of the tyre in millimetres. Therefore, this radial tyre has a width of 205mm. The ‘65’ confirms the height shown as a percentage of the full tyre width. The letter ‘R’ depicts the variety of tyre.
In today’s Tread Life episode, we will teach you how to read tire size. Having the proper tire size is so important. Not only can having the wrong tires affe

For example a tire size 35X12.50-20 is typically fitted on a 9.0" wide wheel, therefore the tire width is 12.5" with the wheel much narrower than the tread width. For sports cars, the general rule of thumb is to match the wheel width to the tread width in inches. For example a tire size 285/35-19 has a tread width of 9.9".

1 Key Takeaways. 2 Where to Find the Tire Size. 3 How to Read Tire Sizes. 3.1 The First Letter: Tire Types — P225/50R17 98H. 3.2 The Next Few Numbers: Width of Tire—P225/50R17 98H. 3.3 Numbers After the Slash: Aspect Ratio—P225/50R17 98H. 3.4 The Following Letter: Internal Construction Type/Tire Type—P225/50R17 98H. 1st Number = The overall height of the tire. (ex. 25 x8-12 tire is 25" tall.) 2nd Number = The overall width of the tire. (ex. 25x 8-12 tire is 8" wide) 3rd Number = The rim diameter. (ex. 25x8-12 tires are designed to mount on a 12" rim) Choosing the right size of tire for your ATV Check the tire’s sidewall for a series of letters and numbers 11 to 13 characters in length. The first character should be a letter indicating the tire type, referring to the type of vehicle for .