Replacing tires with new ones seem a simple task to require a tire size converter . A slight miscalculation , however, can lead to accidents . A tire size converter dealer or professional mechanic maintain a formula to get the correct measurement. The owner of a vehicle , therefore , must also have measures to check against.
Tire size converters are generally based on two types of measurement systems : inches and metric systems based on system calibration. The old system can be expressed in decimal or fractional form , while the system may later be in French or International Organization for Standardization (ISO ) and the European way of tire and rim Organisation ( ETRTO ) .
Tyre sizes in decimal are not interchangeable with those of the fractions. Through decades of Harris Cyclery bicycle expert Sheldon Brown continues to distinguish the two formats. tire size converter Brown Act states that " if two tires are marked with sizes that are mathematically equal, but is expressed in decimal and the other as a fraction , these two tires are not interchangeable. " So a tire size converter it comes with a ¾ measure is different from the measurement of 0.75.
A tire size converter with the French system will require measuring inputs which have a combination of numbers and letters . The number indicates the nominal outside diameter of the tire in millimeters . The next letter indicates the tire width . "A" is narrow , and " D" for wide tires . The "B " and " C" letters are medium size.
The code gives wide ISO Metric tire section , aspect ratio , internal construction , wheels and wheel diameter specifications , and service description. Some tire size converters that use ISO require that these sets of numbers and letters are molded into the sidewall . Three digits after the first letter of the code is the ISO Metric tire size converter nominal section width or larger of the two outer edges of the tire in millimeters article. The number of two or three digits after the slash give the percentage of the aspect ratio of the height to the total lateral width of the tire wall .
A ratio of 82 percent is assumed for tire size converter codes without the figures. Must also be remembered that the above figures 200 gives the diameter of the entire tire in millimeters. The letter after the thrust has two or three digit number gives the internal construction of the tire size converter or carcass construction ratio of tire ply . B represents bias belt , D is diagonal , and R is the radial . The internal construction is supposed to be a cross-sectional structure of the tire if it is not given the letter.
The following two figures show the diameter of the wheel that the tire is designed to fit . A single space is placed before the numbers of the combination - letter indicating the service description or index / load capacity and speed rating . Make sure that the entry of the card number - Number correctly in the size of the tire size converter in order to achieve an accurate result.