Old 10-22-13, 06:23 PM
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Originally Posted by Bill Kapaun View Post
Apparent circumference?
My coffee almost went up my nose on that one.
You do like digging holes!

A circumference is a property of a circle. There isn't any real circle in a loaded tire.

The tire (in use) is a circle with a flat area under the hub touching the ground. The circular tire is deformed in use (so it isn't a circle any more).

What you are measuring is the radius of an imaginary circle.

Last edited by njkayaker; 10-22-13 at 06:31 PM.
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