Re: [ihc] Tire RPM @ 70 mph

["Dan Nees" <cookiedan@xxxxxxxxxxx>]

Joel,
   What if you could adjust the diameter of the tire from the interior of
your truck? Like if you had an adjustable Pi button?
   <ducking for cover>

Dan Nees
cookiedan@domain.elided
-------Original Message-------

From: Joel M Brodsky
Date: 3/15/2004 7:40:33 PM
To: ihc@domain.elided
Subject: [ihc] Tire RPM @ 70 mph

Jim,
just some rough numbers...
70 mph ~ 103 ft/sec
31" tire is  pi*D or 8.1 feet in circumference

103/8.1 = 12 rev/sec

or 720 rev/min.

I think you're okay.

Joel

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