In article ,
Andy Burns wrote:
Dave Plowman wrote:

Huge wrote:

The - Bits - Of - The - Tyre - Not - In - Contact - With - The - Road -
Are - Irrelevant. The - Only - Thing - That - Matters - Is - The -
Diameter - Of - The - Circle - Whose - Radius - Is - The - Distance -
From - The - Axle - To. The - Road.

You should have used caps, Huge. For those whose physics are still at
kindergarten level.

Except there isn't a single distance from the centre of the axle to all
parts of the tyre in contact with the road ... the average distance
perhaps?

Quite. Not the average radius of the tyre, but the average of the part in
contact with the road. Which will, of course squirm around a bit. One
reason why an under inflated tyre wears out more quickly.

--
*No hand signals. Driver on Viagra*

Dave Plowman London SW
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