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. 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. I hope you can help with this one, because it has got me baffled. Use the table below to help you find radial tire size equivalents and metric … 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. 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. It is one of the first volume-produced low-profile tires. Euro-metric sized tires do not have the P at the beginning of the size, 225/45-17 for example. P metric tire sizes: aspect ratio or profile Tire Height in Inches Goodyear has a large tire catalog complete with all-season tires, winter tires, sport performance tires, and more. 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" It has thus been called the "Betamax of the tire industry. Most passenger car tires today are “metric” or “P-metric” (similar, with … Size Prior to 1955. Vintage Tire Size Conversion Chart Use the following chart to figure out the closest modern tire size to your car's original tires. Tire Construction Differences. Euro-metric sizes were developed over time based on load and dimensional… The Michelin TRX, (and the related TDX), is a radial tire introduced by the Michelin Group in 1975. Closest. What do these terms alphabetical, metric and std inch mean? These sizes are known as hard-metric or Euro-metric size tires. 15 is the wheel size, in inches. Sometimes you will see a size written like 11.2×20 or you may see it like 11.2-20. You should never go beyond 3% of the original tire, otherwise you run the risk of brake failure. Common Tire Sizes. Using metric dimensions to reflect a tire's width began in Europe in the late 60s. 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. Calculate the overall diameter of metric and inch tire sizes and view the results with our tire visualizer. 35 is the tire diameter, or height, in 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. Passenger tires that are designed based on the European Tyre and Rim Technical Organization’s (ETRTO) standard start without any letters. Load index. Enter any three of the numbers into this form to solve for the fourth. 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. However,… Tire Size Conversion Chart. Tractor tire sizes can be written in many different ways, and can become very confusing to consumers. 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. Vintage Tire Size Conversion Chart. Euro-metric sizes are dimensionally equivalent to P-metric sizes, but typically differ subtly in load-carrying capabilities. 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. The use of P-metric sizes began in the late 1970s and they are the most frequently used type of tire size today. Let’s break down the following tire size: 35x12.50R15 . 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. It looks like your 5.20-13 tire has an overall diameter of 23.10 inches and a section width of 6 inches. Standard, Radial, and Metric Tractor Tire Sizes. Tire sizes will often start with letters. This chart has been developed to help you determine their equivalent Euro-metric and P-metric tire sizes. Find all 33 inch diameter tires for every wheel size, including the metric and inch equivalent tire sizes available for each tire. So a 285/75R16 metric tire would calculate to an inch measurement tire of 32.82X11.22R16. Tire Height Calculator. …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). Joseph 20. with the new tires, your vehicle will actually be traveling at , which is than the original tires. Using metric dimensions to reflect a tire's width actually began in Europe in the late 60s. Compare the tire calculations with alternate tire sizes to find the right tire. Enter Tire Size / R (Examples: 285/75R16 or 33x12.50R15) Convert. 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. A handy guide to compare modern and antique tire sizes. 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). Metric & P-Metric Sizes. 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 26" (ISO size 559) is the most commonly used size for modern mountain bikes and is also used by many hybrid bikes. 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.. Two versions of numeric tire sizes were used as Original Equipment on vehicles between 1949 and 1970. My bike tires are currently in need of replacing and I read the numbers on it, … P metric tire sizes: nominal width. For example a LT265/75R16 would be around 31.6 inches tall and 10 inches wide. 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). 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.. 12.50 is the width of the tire, in inches. 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. There are five tire diameter sizes that are in common use on modern standard adult bicycles. 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.. Metric Radial Size . "LT" means Light Truck and "P" means Passenger tire. If there are no letters at the beginning, it refers to the Euro-metric (drafted by ETRTO). The load index on a passenger-car tire is a numerical code stipulating the maximum load (mass, or weight) each tire can carry. Find your tire size within the chart below to see a selection that's right for you. Tire size calculator compares diameter, width, circumference and speedometer differences for any two tire sizes. Find your tire size within the chart below to see a selection that's right for you. …tire sizes created with the new load formula. 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