First, thank you to both Twotired and Lester Piglet.
Second, is it possible to tell whether the crown of a new 3.25" a 1.85 rim is any more or less pronounced than a 4.33 " (110mm) in a 2.15 rim, thereby changing the circumference?
Third, funny how the smaller diameter wheel actually has a larger circumference as a result of the width of the tire, and tire aspect ratio!
Four, please help me clarify my fuzzy math, as I get a difference between the two circumference as a 1.15% difference between the two circumference, and .124% difference in the difference in the number of turns each wheel makes over a mile(782.2 vs 791.3)
Are these differences significant given the accuracy of the stock speedometer and odometer?
Thanks again!