Enter your engine RPM, tire diameter, and vehicle speed into the calculator to determine your gear ratio.
Gear Ratio Calculation Formula
The following formula is used to calculate the gear ratio for a 1/8 mile run.
Gear Ratio = (Engine RPM * Tire Diameter) / (Vehicle Speed * 336)
Variables:
- Engine RPM is the revolutions per minute of the engine
- Tire Diameter is the diameter of the tire in inches
- Vehicle Speed is the speed of the vehicle in miles per hour (mph)
To calculate the gear ratio, multiply the engine RPM by the tire diameter, then divide by the vehicle speed multiplied by 336.
What is Gear Ratio Calculation?
Gear ratio calculation is the process of determining the optimal gear ratio for a vehicle based on its engine RPM, tire diameter, and vehicle speed. This ensures that the vehicle operates efficiently and achieves the best possible performance. Accurate gear ratio calculation is crucial for racing and high-performance applications, where every fraction of a second counts.
How to Calculate Gear Ratio?
The following steps outline how to calculate the gear ratio using the given formula.
- First, determine your engine RPM.
- Next, measure the diameter of your tires in inches.
- Record the speed of your vehicle in miles per hour (mph).