Tire Revolutions Calculator
Calculate tire revolutions per mile based on tire dimensions. Determine rotations per mile for different tire sizes to understand speedometer calibration and gear ratio effects.
Step 1: Tire Dimensions
Understanding Tire Sizes
Tire size is typically expressed as Width/Aspect Ratio/Rim Diameter (e.g., 225/55R17). The aspect ratio is the height of the tire sidewall as a percentage of the width.
Step 2: Calculation Settings
Tire Revolutions Formula
Revolutions per mile = 63,360 ÷ (π × Tire Diameter in inches). Tire diameter is calculated as: Wheel Diameter + (2 × (Tire Width × Aspect Ratio ÷ 100) ÷ 25.4).
Tire Revolutions Calculation Results
Revolutions Per Mile
Tire Type Revolution Comparison
| Tire Type | Typical Size | Diameter (in) | Revs/Mile |
|---|
Tire Dimension Breakdown
Revolutions Per Mile Formula
Revolutions per mile = 63,360 ÷ (π × Tire Diameter)
Tire diameter = Wheel diameter + 2 × (Tire Width × Aspect Ratio ÷ 100 ÷ 25.4). 63,360 is the number of inches in a mile (5,280 feet × 12 inches).
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