TwinTurbo.NET: Nissan 300ZX forum - Depends on how worn the tires are
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Subject Depends on how worn the tires are
     
Posted by Z CRAZY on November 27, 2000 at 3:19 PM
  This message has been viewed 15 times.
     
In Reply To 3247.2 rpm to be exact posted by got rice? on November 27, 2000 at 02:28 PM
     
Message Circumference in feet becomes less as the tire wears down.

: 245/45/16 circumference, in feeet: 6.46
: final drive 3.69
: top gear in manual .75
: x = rpm

: [6.46x / (88 * 3.69 *0.75) ]= 80 mph

: [6.46x / 243.54] = 80 mph
: 6.46x=19,483.2
: x = 3247.2

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