| In a message dated 6/3/2005 3:18:10 A.M. Mountain Daylight Time,  
paul.hunt1@blueyonder.co.uk writes:
The  *effective* circumference is governed by the radius at the point of
contact  with the road.  The *actual* circumference is  immaterial.
PaulH.
Ohhh, my brain hurts.  Can you 'splain this in simple  Americanese (southern 
if possible) so this elderly fat boy can understand? 
 
It would seem to me that even if you drove the tire almost flat,  effectively 
lowering the radius on the lower half of the tire, you would still  roll 100% 
of the tread across the road.  If the tread is X inches long (or  centimeters 
if you insist), you travel X inches, whether the tire is round,  oval, or 
elliptical, no?
 
Robert  Houston
74.5 MGBGT
63 TR4
73 MG Midget
Firstly you must always  implicitly obey orders, without attempting to form 
any opinion of your own  regarding their propriety. Secondly, you must consider 
every man your enemy who  speaks ill of your king; and thirdly you must hate 
a Frenchman as you hate the  devil._ Horatio  Nelson_ 
(http://www.brainyquote.com/quotes/quotes/h/horationel167957.html) 
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