Axle Ratio Calculator
Calculate optimal axle ratios for your vehicle. Understand how gear ratios affect performance, towing, and fuel economy.
Step 1: Vehicle Details
Understanding Axle Ratios
The axle ratio determines how many times the driveshaft rotates for each wheel revolution. Lower ratios (e.g., 3.08) improve fuel economy, while higher ratios (e.g., 4.10) enhance acceleration and towing capacity.
Step 2: Additional Options
About Axle Ratio Selection
Choosing the right axle ratio depends on your driving needs. Performance applications benefit from higher ratios, while highway driving is more efficient with lower ratios. Tire size also significantly impacts the effective gearing.
Axle Ratio Analysis Results
Recommended Axle Ratio
Axle Ratio Comparison
| Axle Ratio | Cruise RPM | Performance | Fuel Economy | Best For |
|---|
RPM vs Speed Analysis
Axle Ratio Calculation Formula
RPM = (Speed × Axle Ratio × Transmission Ratio × 336) / Tire Diameter
The engine RPM at a given speed is calculated using the axle ratio, transmission gear ratio, and tire diameter. Changing any of these components affects the vehicle’s performance characteristics.
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