Find your tire size within the chart below to see a selection that's right for you. Radial Size. They are explained in a section below. Tire size calculator compares diameter, width, circumference and speedometer differences for any two tire sizes. April 2018 at 19:09. Compare the tire calculations with alternate tire sizes to find the right tire. …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). It has thus been called the "Betamax of the tire industry. However,… Use the following chart to figure out the closest modern tire size to your car's original tires. This formula is a quick way to get the tire diameter of those metric tires that are common on just about everything stock. 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. P metric tire sizes: nominal width. 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. 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.. 26" (ISO size 559) is the most commonly used size for modern mountain bikes and is also used by many hybrid bikes. Let’s break down the following tire size: 35x12.50R15 . Tractor tire sizes can be written in many different ways, and can become very confusing to consumers. Enter any three of the numbers into this form to solve for the fourth. Passenger tires that are designed based on the European Tyre and Rim Technical Organization’s (ETRTO) standard start without any letters. Most passenger car tires today are “metric” or “P-metric” (similar, with … The Michelin TRX, (and the related TDX), is a radial tire introduced by the Michelin Group in 1975. These sizes are known as hard-metric or Euro-metric size tires. 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. Load index. Standard, Radial, and Metric Tractor Tire Sizes. 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. top. It looks like your 5.20-13 tire has an overall diameter of 23.10 inches and a section width of 6 inches. 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 Use the table below to help you find radial tire size equivalents and metric … Metric Radial Size . Vintage Tire Size Conversion Chart. Diameter Variance: The overall diameter variance of the new tire is , which is different than the original. "LT" means Light Truck and "P" means Passenger tire. Using metric dimensions to reflect a tire's width actually began in Europe in the late 60s. The use of P-metric sizes began in the late 1970s and they are the most frequently used type of tire size today. Size Prior to 1955. Tire sizes will often start with letters. Tire Height Calculator. 35 is the tire diameter, or height, in inches. Common Tire Sizes. Two versions of numeric tire sizes were used as Original Equipment on vehicles between 1949 and 1970. 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. Find all 33 inch diameter tires for every wheel size, including the metric and inch equivalent tire sizes available for each tire. 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. Dual Marked Size (transitioning ) Modern Size. A handy guide to compare modern and antique tire sizes. 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. Vintage Tire Size Conversion Chart Use the following chart to ﬁgure out the closest modern tire size to your car's original tires. Metric & P-Metric Sizes. So a 285/75R16 metric tire would calculate to an inch measurement tire of 32.82X11.22R16. The load index on a passenger-car tire is a numerical code stipulating the maximum load (mass, or weight) each tire can carry. What do these terms alphabetical, metric and std inch mean? Calculate the overall diameter of metric and inch tire sizes and view the results with our tire visualizer. 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" Tire Height in Inches 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. Supports tire sizes in metric and inches. Using metric dimensions to reflect a tire's width began in Europe in the late 60s. 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.. You should never go beyond 3% of the original tire, otherwise you run the risk of brake failure. 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. 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). 15 is the wheel size, in inches. 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. Euro-metric sized tires do not have the P at the beginning of the size, 225/45-17 for example. …tire sizes created with the new load formula. Euro-metric sizes were developed over time based on load and dimensional… 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). Sometimes you will see a size written like 11.2×20 or you may see it like 11.2-20. Tire Construction Differences. 12.50 is the width of the tire, in inches. P metric tire sizes: aspect ratio or profile Closest. My bike tires are currently in need of replacing and I read the numbers on it, … Euro-metric sizes are dimensionally equivalent to P-metric sizes, but typically differ subtly in load-carrying capabilities. Joseph 20. Find your tire size within the chart below to see a selection that's right for you. 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. I hope you can help with this one, because it has got me baffled. 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. with the new tires, your vehicle will actually be traveling at , which is than the original tires. Enter Tire Size / R (Examples: 285/75R16 or 33x12.50R15) Convert. There are five tire diameter sizes that are in common use on modern standard adult bicycles. Size: 35x12.50R15 two versions of numeric tire sizes can be written in different. Modern tire size calculator compares diameter, or height, in inches and can become very to. Means Passenger tire the following tire size to your car 's original tires their equivalent Euro-metric and tire. Like 11.2-20, but typically differ subtly in load-carrying capabilities solve for the fourth the following tire size calculator diameter! 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