1. What is Wheel RPM?

Wheel RPM (Revolutions Per Minute) measures how many complete rotations a wheel makes in one minute. It's an important parameter in vehicle dynamics, engineering, and performance analysis.

2. How Does the Calculator Work?

The calculator uses the Wheel RPM formula:

Where:

• \( Speed \) — Vehicle speed in meters per second (m/s)
• \( Wheel\ Radius \) — Radius of the wheel in millimeters (mm)
• \( \pi \) — Mathematical constant Pi (~3.14159)
• 60 — Conversion factor from seconds to minutes
• 1000 — Conversion factor from meters to millimeters

Explanation: The formula converts linear speed to rotational speed by accounting for the wheel's circumference and unit conversions.

3. Importance of Wheel RPM Calculation

Details: Knowing wheel RPM is essential for gear ratio selection, speedometer calibration, performance tuning, and understanding vehicle dynamics at different speeds.

4. Using the Calculator

Tips: Enter speed in meters per second (m/s) and wheel radius in millimeters (mm). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How do I convert mph to m/s?
A: Multiply mph by 0.44704 to get m/s (1 mph = 0.44704 m/s).

Q2: What's a typical wheel RPM range for cars?
A: At highway speeds (60 mph), typical wheel RPM ranges from 600-900 RPM depending on wheel size.

Q3: Should I use wheel radius or diameter?
A: This calculator uses radius. If you have diameter, divide it by 2 to get radius.

Q4: How does wheel RPM relate to engine RPM?
A: Engine RPM = Wheel RPM × Gear Ratio (including final drive ratio).

Q5: Why is Pi used in the calculation?
A: Pi relates a wheel's circumference (2πr) to its radius, which is needed to convert linear distance to rotations.