1. What is Rev Per Mile?

Rev Per Mile refers to the number of revolutions a tire makes to travel one mile. This measurement is crucial for truck fleet management, speedometer calibration, and fuel efficiency calculations.

2. How Does the Calculator Work?

The calculator uses the Goodyear formula:

Where:

• 20168 — Constant value based on standard measurements
• Tire Diameter — The overall diameter of the tire in inches

Explanation: The formula calculates how many times a tire rotates to cover a distance of one mile based on its diameter.

3. Importance of Rev Per Mile Calculation

Details: Accurate rev per mile calculation is essential for proper speedometer calibration, odometer accuracy, gear ratio selection, and maintaining optimal fuel efficiency in commercial trucking operations.

4. Using the Calculator

Tips: Enter the tire diameter in inches. The value must be greater than zero. You can typically find the tire diameter in the tire specifications or sidewall markings.

5. Frequently Asked Questions (FAQ)

Q1: Why is rev per mile important for truck tires?
A: It affects speedometer accuracy, fuel economy calculations, and helps determine proper gear ratios for optimal performance.

Q2: How do I measure tire diameter?
A: The most accurate way is to check the tire specifications from the manufacturer. Alternatively, you can measure the height of the mounted tire from the ground to the top of the tire.

Q3: Does tire wear affect rev per mile?
A: Yes, as tires wear down, the diameter decreases slightly, which increases the rev per mile. This is why regular calibration checks are important.

Q4: Can I use this calculator for passenger car tires?
A: While the formula works similarly, the constant value might differ. This calculator is specifically designed for Goodyear truck tires.

Q5: How does rev per mile affect fuel economy?
A: Higher rev per mile means the engine works harder to maintain speed, potentially reducing fuel economy. Proper tire sizing helps maintain optimal efficiency.