Speedometer Gear Calculator

This calculator is a useful tool that will do the math to help you figure out the gears that are needed to make your speedometer work correctly.

Drive Gear Teeth - The Number of teeth for the transmission
Rear End - Rear Gear Ratio (3.89, 3.08, 4.11, etc.)
Tire Height - Please use Inches when measuring
Speedo Revolutions Per Mile - The number of RPM's the speedometer needs to turn at 60mph

Speedometer Gear Calculator
Drive Gear Teeth
Rear End Gear Ratio
Tire Height (Inches)
Speedo Revs/Mile
Speedometer Gear
Speedometer Gear Teeth