Just fill in the inch measurements you are looking for and it will populate suggested tire sizes that are with in one inch bigger and smaller of the entered inch tire size. It also solves the problem of deciding what tire you would like to run if you have inch tire measurement in mind but can't find a company that manufactures that inch tire size. Just type in any tire size and click calculate. Our tire calculator makes this happen for you. The sidewall height or 'aspect ratio' of a 285/75/R16 tire is 75% of 285mm. The sidewall height is a percentage of the width of the tire. The second number on a metric tire is to calculate the side wall measurement. The sidewall or aspect ratio are used in metric tire sizes to determine the overall height of a tire. The third number generally preceded by an 'R' is the wheel diameter. Divide this number by 25.4 to get the inch equivalent as there is 25.4 mm in 1 inch. The first number on a metric tire is the width in millimeters. Inch measurement tires are fairly easy to understand however metric tires use a more difficult system to read. Just type in a metric or standard size tire and click calculate.
Use our tire size calculator to calculate the diameter, width, sidewall, circumference, and revolutions per mile of any tire.
