15 is the wheel size, in inches. Let’s break down the following tire size: 35x12.50R15 . Enter any three of the numbers into this form to solve for the fourth. Closest. You should never go beyond 3% of the original tire, otherwise you run the risk of brake failure. Tire Size Conversion Chart. 27" (ISO size 630) is an older size that was used for road bikes, but since so many bikes were built with this size, it is still readily available. This formula is a quick way to get the tire diameter of those metric tires that are common on just about everything stock. Dual Marked Size (transitioning ) Modern Size. Find all 33 inch diameter tires for every wheel size, including the metric and inch equivalent tire sizes available for each tire. April 2018 at 19:09. Metric & P-Metric Sizes. Tractor Tire Size Conversion & Tube Chart ... or in the case of the newest metric radial sizes are still in development and yet to be produced. with the new tires, your vehicle will actually be traveling at , which is than the original tires. These sizes are known as hard-metric or Euro-metric size tires. The calculator will provide the Sidewall Height, Section Width, Overall Diameter, Circumference, and Revolutions Per Mile, as well as an approximation of the difference in speedometer reading. Joseph 20. This chart has been developed to help you determine their equivalent Euro-metric and P-metric tire sizes. A handy guide to compare modern and antique tire sizes. Standard, Radial, and Metric Tractor Tire Sizes. 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.. Common Tire Sizes. The equivalent metric tire sizes presented in the right column of the chart are not the real tire sizes which you can buy in a store, these are only a hints. Diameter Variance: The overall diameter variance of the new tire is , which is different than the original. Tire Height Calculator. Using metric dimensions to reflect a tire's width actually began in Europe in the late 60s. For example P, LT, T, and ST. P. When we use tire type “P” or P-Metric, it means that the tire is made according to certain standards of the United States (drafted by TRA) for passenger vehicles. Supports tire sizes in metric and inches. The Michelin TRX, (and the related TDX), is a radial tire introduced by the Michelin Group in 1975. Radial Size. 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.. 225/50R16 92S If there isn't a letter preceding the three-digit numeric portion of a tire size, it signifies the tire is a "Metric" size (also called "Euro-metric" because these sizes originated in Europe). For example a LT265/75R16 would be around 31.6 inches tall and 10 inches wide. It is one of the first volume-produced low-profile tires. I hope you can help with this one, because it has got me baffled. There are five tire diameter sizes that are in common use on modern standard adult bicycles. Vintage Tire Size Conversion Chart Use the following chart to figure out the closest modern tire size to your car's original tires. Load index. Motorcycle Street Tire Size Conversion Chart Front Tires Rear Tires Metric Alpha Inch Metric Alpha Inch 80/90 MH90 2.50/2.75 110/90 MP85 4.50/4.75 P metric tire sizes: nominal width. For Load Range "B" tires, ETRTO (ISO-Metric) standards specify the load index rating at an inflation pressure of 36 psi (250 kPa) (table below), while P-Metric standards measure the load capacity at an inflation pressure of 35 psi (240 kPa). However,… Euro-metric sized tires do not have the P at the beginning of the size, 225/45-17 for example. Goodyear has a large tire catalog complete with all-season tires, winter tires, sport performance tires, and more. Using metric dimensions to reflect a tire's width began in Europe in the late 60s. 26" (ISO size 559) is the most commonly used size for modern mountain bikes and is also used by many hybrid bikes. Calculate the overall diameter of metric and inch tire sizes and view the results with our tire visualizer. Find your tire size within the chart below to see a selection that's right for you. Tractor tire sizes can be written in many different ways, and can become very confusing to consumers. Two versions of numeric tire sizes were used as Original Equipment on vehicles between 1949 and 1970. The first number, in the illustration “185,” is the nominal width of the tire in millimeters, from sidewall to sidewall, when it is properly mounted on a wheel and inflated but not supporting a car. The load index on a passenger-car tire is a numerical code stipulating the maximum load (mass, or weight) each tire can carry. Tire Height in Inches Compare the tire calculations with alternate tire sizes to find the right tire. My bike tires are currently in need of replacing and I read the numbers on it, … Tires Comparison Chart Agricultural Tire Metric Conversion Motorcycle tire guide 101 and faq revzilla metric to imperial tire conversion tyre size tire sizes motorcycle chart motorcycle conversion chart standard. Tire size calculator compares diameter, width, circumference and speedometer differences for any two tire sizes. Tire Size Chart - Metric - by Overall Tire Diameter displays the metric tire size designations with belonging tire measures, in metric and English units: OD - Overall Tire Diameter, SW - Section width, AR - Aspect Ratio, RD - Rim diameter, SH - Section height, CI - Tire circumference, RE - Revolutions per mile/km.. If you want to do a side-by-side comparison of two different tire sizes, simply enter your current tire size, followed by the new tire size. Euro-metric sizes were developed over time based on load and dimensional… Remember, not all tire sizes are manufactured in both metric and inch sizes so learning how to read tire size can be a valuable tool for anyone in the market for new tires. Metric to Standard Tire Conversion Chart for 15 inch Wheels; Metric Standard; 215/75/15: 27.7"x 8.5" 225/70/15: 27.4"x 8.9" 225/75/15: 28.3"x 8.9" 235/75/15: 29.0"x 9.3" 245/75/15: 29.5"x 9.6" 255/75/15: 30.0"x 10.0" 265/75/15: 30.6"x 10.4" Find your tire size within the chart below to see a selection that's right for you. 12.50 is the width of the tire, in inches. It looks like your 5.20-13 tire has an overall diameter of 23.10 inches and a section width of 6 inches. 35 is the tire diameter, or height, in inches. The use of P-metric sizes began in the late 1970s and they are the most frequently used type of tire size today. Tire Construction Differences. Metric Radial Size . …tire sizes created with the new load formula. Most passenger car tires today are “metric” or “P-metric” (similar, with … It has thus been called the "Betamax of the tire industry. The closest thing that we have is a 175/80-13 size tire which will have an overall diameter of 24.10 inches and a section width of 7 inches. Although technologically advanced, and reasonably successful, the tire's requirement for a non-standard rim ultimately condemned it to a relatively short commercial life. Euro-metric sizes are dimensionally equivalent to P-metric sizes, but typically differ subtly in load-carrying capabilities. Use the table below to help you find radial tire size equivalents and metric … Tire sizes will often start with letters. Enter Tire Size / R (Examples: 285/75R16 or 33x12.50R15) Convert. P metric tire sizes: aspect ratio or profile "LT" means Light Truck and "P" means Passenger tire. Passenger tires that are designed based on the European Tyre and Rim Technical Organization’s (ETRTO) standard start without any letters. Use the following chart to figure out the closest modern tire size to your car's original tires. They are explained in a section below. 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