Easy and versatile tool to calculate many ratios of your drive train. Will calculate any ratio based on other fields. Handy for anyone wanting to re-gear their vehicles, change tire size, check rpm at a given speed (or speed at given rpm), etc. Both standard and metric measurements are supported. Includes large diameter tires. Currently tested on 2.2 and 2.3.3. Feature requests are welcome. Support for transfer case ratios coming soon!
Calculates:
Tire sizes
Differential ratios
Transmission ratios
Engine RPM
Speed
