In addition, it provides actual speed versus speedometer readings if the tire sizes are different. Diameter. If you run bias tires during field operations you can simply change to radial tires or to the “IF” or “VF” to reduce ground pressure as well as increase traction. Step 2. For example, when replacing a FR78-14, you would look up the appropriate 75-series size, the 205/75R14. Converting bias-ply to P-metric tire sizing is not difficult. Tire size calculator compares diameter, width, circumference and speedometer differences for any two tire sizes. Example: The size of the tire … * When replacing Alpha Numeric tires with Euro-metric or P-metric tires, look for the Euro-metric or P-metric size listed in the equivalent aspect ratio. Tire Calculator Notes: Tire diameter can vary slightly for each tire model. Pros and cons of the Plus sizing. Once you are at your vehicle, write down the following highlighted numbers located on your sidewall in the order shown below. Convert just about anything to anything else. Keep in mind these are close approximations and may not be exact replacements. Wheel Size . You'll find that we have most wheel sizes listed so that you can be confident when ordering your spare tire cover. Learn about a Tyre Size Designation. It allows the user to compare two different tires. If a wider tire is desired, 215/70R15 or 235/60R15 will provide the same diameter, but wider wheels will be required. The 78-series alpha numeric tires should be replaced with today's 80-, or 75-series tires. A ISO tire size of 28-622 is how we would refer to a 700 x 28C tire has a tire width of 28 mm and a rim diameter of 622 mm. Identify the bias-ply tire's diameter. Enter the metric size (i.e. From standard bias ply sizes such as 6.70-15 to Alpha Numeric sizes like F70-15, all the way up to modern P-Metric sizing, such as 205/75R15. The tool can be useful for finding out whether or not an alternative tire size is compatible with your vehicle. 15-inch Wheel Conversion Chart . Locate this measurement on the tire size chart included in the Resources section, and the diameter that is displayed next to the measurement size. Find your tire size instead. The bias-ply measurement is printed on the original tire or in the original specifications for the vehicle. To convert alpha numeric tires to P-metric sized tires, it is important to identify the original tire's aspect ratio. If your wheel size isn't listed in the drop down, you can just enter the number into the Dia. Diameter (MM) Estimated Wheel Circumference/Computer Setting. Initially, the tire size simply reflected the equivalent of its outer diameter, expressed in inches or millimeters (e.g. Select the tire sizes to compare to your stock size and click 'Compare Selected Sizes'. Related articles: Find out what is Plus Sizing. Clear All. Vintage Tire Size Conversion Chart Pre-1964 1965-72 80 series metric Alpha Numeric 78 series P-Metric 75 series Radial P-Metric 70 series Radial 5.90-13 600-13 165-13 A78-13 P165/75R13 P175/70R13 6.40-13 … Classic car websites often have a chart showing the different tire sizes and their measurements (see Resources). By converting the 225mm to inches (225 / 25.4 = 8.86") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of 4.43". 285/75 R17) / R. Calculate. Tire Size Conversion Chart - Metric to Inches - by Rim/Wheel Diameter displays the metric tire size designations and for each metric tire size designation shows the equivalent - exact calculated inch tire size.. Shop online at Canadian Tire and pick up at any of 500+ locations The Metric Tire Conversion Calculator converts metric tire sizes (ie 285/75R16) to standard tire sizes (ie 31x10.50R15) and standard tires back to metric. Keep in mind these are close approximations and may not be exact replacements. Tire Size Calculator. Locate an online tire size conversion chart. Tire Size and Comparison Calculator Calculate tire diameter from code and compare speedometer differences for tire sizes. Perform tire size conversion from the inch tire size to the metric tire size and the other way around with the tire size converter. This code specifies the dimensions of the tire, and some of its key limitations, such as load-bearing ability, and maximum speed. Find the chart that gives the actual measurement for an F78-14 tire. (mm) Tire Size. What do these terms alphabetical, metric and std inch mean? All you need to do is to fill in the form with your tire dimensions, click on the convert button, and you're done. So, the sidewall height of a The 3rd number (generally preceded by an "R") is Rim Diameter in inches. Remove This Item; Compare . Here are some of the common metric measurement of dirt bike tires into inches: Metric: Inches: 120/90×19: 5.10×19: 110/90×19: 4.50×19: 100/90×19: 4.10×19: 140/80×18: 5.60×18: 130/80×18: 5.30×18: 120/100×18: 5.10×18 : 110/100×18: 4.50×18: How to Choose The Dirt Bike Tire Size. Can't find your version/option? Use the following chart to figure out the closest modern tire size to your car's original tires. Some charts show comparable sizes, but it is better to get the actual measurements first. Converting tire sizes to reduce compaction can help by reducing ground pressure from your equipment. Tire Size Comparison Calculator. If this tire were a P225/ 70 R16 size, our calculation would confirm that the size would result in a section height of … Check out the Charts: Tyre size chart, Tyre conversion chart, Tyre speed rating, Load index . If replacing a FR70-14, you would look up the appropriate 70-series size, the 215/70R14. Try searching by your vehicle's tire size instead. Finding your tire size is simple. Tire Size Conversion Chart - Inches to Metric - by Wheel/Rim Diameter displays the inch tire size designations and for each inch tire designation shows the equivalent - exact calculated metric tire size. Jen; March 23, 2017 ; Tweet; Metric to Standard Conversion. Fortunately, you can do it in no time flat with the help of our tire size conversion calculator. Click on this easy to read tire size chart so that you can get the correct size tire cover or RV tire shade. You have no items to compare. Tires in a 205/75-15 size will be easier to find as radial tires. Use our handy online calculator to get a list of the ones that will fit your vehicle. That isn't the case, of course. 305/50R20 tire conversion. From overall diameter to revolutions per mile, you’ll also be able to compare tire sizes and learn the proper height, width, and fit when converting tire sizes. Use our Tire Size Calculator to find the suggested tire size specs for your vehicle. Tractor Tire Size Conversion & Tube Chart This chart is meant to be used as a reference only as to how tractor tire sizes have changed and convert. Vintage Tire Size Conversion Chart Use the following chart to figure out the closest modern tire size to your car's original tires. The sizes in the above chart do not go as large as modern sizes (180/55 or 240/40) because new bikes are not made to use the Inch Format.. Step 1. Before purchasing any tires you should compare outside diameters and the tread footprint to get a better idea on how close a match they are. What size tires do you need? The listed diameters are from calculations based on the tire size. Radial and bias ply tires should not be mixed on the same vehicle. This calculator provides tire conversion details in both metric and standard units for a given tire. Automotive tires are described by an alphanumeric tire code (in American English and Canadian English) or tyre code (in British English, Australian English and others), which is generally molded (or moulded) into the sidewall of the tire. They are explained in a section below. Tire Size Conversion Chart Shop by Size 1949 to 1964 1965 to 1970 1970 to 1980 1960 to Present 1980 to Present NUMERIC ALPHA NUMERIC* EURO-METRIC P-METRIC EURO-METRIC or P-METRIC "90-" to "80"-series 78- to 50-series "82"-series 80-, 75-series 70-series 65-series 60 … Compare Products. Welcome to OnlineConversion.com. Supports tire sizes in metric and inches. If you are confused about the metric system of the tire size, you can convert them into inches. The 2nd number is used to calculate the sidewall height or "aspect ratio" , by percentage. F78-15 tires were of bias-ply construction. Vintage Tire Size Conversion Chart. Millimeter (MM) Centimeter (CM) Inches to MM Converter. Immediately available tire sizes that are with in plus or minus 3% variance will be displayed. Tire sizes can be confusing to the consumer since the information molded into the side of the tire seems to be a cryptic string of numbers that only a tire technician can decipher. Reference. The first number is the tire width in millimeters. (mm) field. Note, it assumes the speedometer is calibrated to the original tire. Use this tool to compare two tire sizes. Issues started appearing when rims having different widths were introduced on the market, because these rims required tires with a bigger baloon, that subsequently influenced their size. Convert P-Metric tire size to Tire Diameter in inches. Tire sizes can be a bit confusing, as the size designations changed a lot over the years. Follow Us. The calculator will instantly convert the data into the required standard and display it on the screen with the tire size visualizer. 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