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Calculators:

Displacement
converts
displacements

G Force
mph to rpm
and
tire G Force

Top Speed
from tire rpm

Gear Ratio
over all ratio

Crawl Speed
How slow can you go?

Gearing
calculate mph from rpm and gearing

GPS
convert coordinates between three different units types


Top Speed from Tire RPM


Keep in mind RPM VALUE is tire rpm - not engine rpm

Diameter of Tire (in Inches)
RPM Value
Top Speed
Members click here for updating instructions
© 2004-06 Rough Country Four Wheelers, Inc. All rights reserved.