Tiresize calculation info

Here's the formula for calculating the circumference of a random tire. You must first know these measurements of the tire: width in millimeters, wheel size in inches and the aspect ratio of the tire.

Tirewidth = W , in millimeteres

Wheelsize = D , in inches

Aspect ratio (profile)= P

For the standard 225/45ZR16 tire: W=225 , D=16 , P=45.

Here's the link to the screenshot of the Excel file. (251Kb)

The Excel-file is Hjulseng.xls

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