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RE: Tire diameter

Might want to try various tire manufacturers web sites. Dunlop and
Bridgestone at least have detailed specification which include revolutions
per mile etc.



-----Original Message-----
From: owner-quattro@coimbra.ans.net
[mailto:owner-quattro@coimbra.ans.net]On Behalf Of adamnelson@juno.com
Sent: Saturday, October 10, 1998 10:15 AM
To: Robert.Houk@East.Sun.COM
Cc: quattro@coimbra.ans.net
Subject: Re: Tire diameter

Yes, the problem is easy on paper, but it leaves out many of the
variables such as: tire pressure, tire temperature, centrifugal expansion
as a function of speed, manufactured variations, tread
stiffness/deformation, vehicle weight, etc. Truth is, it's not so simple.
The way we used to get a figure for it in bike racing was to mark the
tire and do a "roll out test." The rider would ride his bike for several