Performance Calculator Courtesy of Richmond Gear
To Calculate RPM If Rear End Ratio Is Known:
Rear End Ratio:
@ Desired MPH:
Tire Diameter (Height) in Inches:
Overdrive Ratio (1 for no OD):
RPM at Given MPH:
To Calculate Rear End Ratio If RPM Is Known @ Given MPH
Known RPM:
@ Known MPH:
Tire Diameter (Height) in Inches:
Estimated Rear End Ratio:
