Tyre Rolling Circumference
The effective circumference of a tyre loaded against a surface.
R = rim size [inches]
W = tyre width
P = tyre profile
Example: for a tyre size of 245 35 R17 this gives a rolling radius = 1854mm
Calculated Rolling Circumference using above formula versus quoted Rolling Circumference
The equation is for the best fit straight line through the data points, this
should be y=x to be a perfect fit.