On 23/06/18 09:07, Andy Burns wrote:
Tim Lamb wrote:

I've been thinking that but... unless the effective circumference is
changed, the tread in contact with the road surface will not alter.

What's the rolling value of Pi for a wheel and tyre?

It has no meaning.

Pins/ angels/ head of/ count.


/me runs away.


--
€œBut what a weak barrier is truth when it stands in the way of an
hypothesis!€�

Mary Wollstonecraft