Euro-metric sizes are dimensionally equivalent to P-metric sizes, but typically differ subtly in load-carrying capabilities. What do these terms alphabetical, metric and std inch mean? 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.. 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). Standard, Radial, and Metric Tractor Tire Sizes. Enter Tire Size / R (Examples: 285/75R16 or 33x12.50R15) Convert. 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. Vintage Tire Size Conversion Chart Use the following chart to figure out the closest modern tire size to your car's original tires. Find all 33 inch diameter tires for every wheel size, including the metric and inch equivalent tire sizes available for each tire. 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.. So a 285/75R16 metric tire would calculate to an inch measurement tire of 32.82X11.22R16. 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. Using metric dimensions to reflect a tire's width actually began in Europe in the late 60s. …and wheelwell dimensions) around either existing or new tire sizes.Metric or Euro-metric sized tires are the ones without the "P" at the beginning, (such as 185R14 or the 225/60R16 listed above). Use the following chart to figure out the closest modern tire size to your car's original tires. 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. 35 is the tire diameter, or height, in inches. Load index. However,… Radial Size. Tractor tire sizes can be written in many different ways, and can become very confusing to consumers. It has thus been called the "Betamax of the tire industry. 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. Closest. There are five tire diameter sizes that are in common use on modern standard adult bicycles. The use of P-metric sizes began in the late 1970s and they are the most frequently used type of tire size today. If there are no letters at the beginning, it refers to the Euro-metric (drafted by ETRTO). This chart has been developed to help you determine their equivalent Euro-metric and P-metric tire sizes. Whats people lookup in this blog: Motorcycle Tire Size Chart Metric To Standard Using metric dimensions to reflect a tire's width began in Europe in the late 60s. 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. Find your tire size within the chart below to see a selection that's right for you. Metric & P-Metric Sizes. Goodyear has a large tire catalog complete with all-season tires, winter tires, sport performance tires, and more. Passenger tires that are designed based on the European Tyre and Rim Technical Organization’s (ETRTO) standard start without any letters. Tire size calculator compares diameter, width, circumference and speedometer differences for any two tire sizes. Equipment on vehicles between 1949 and 1970 you should never go beyond %. 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