Wheel and Tire Comparison Formula:
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The Wheel and Tire Comparison Calculator compares the diameters of two different wheel and tire combinations. This helps determine how much larger or smaller one setup is compared to another.
The calculator uses the simple formula:
Where:
Explanation: The calculator subtracts the second diameter from the first to show the difference in size between the two wheel/tire combinations.
Details: Comparing wheel and tire diameters is crucial for ensuring proper fitment, maintaining speedometer accuracy, and avoiding clearance issues with your vehicle.
Tips: Enter both diameters in inches. The calculator will show the difference between them. Positive values mean the first diameter is larger, negative values mean it's smaller.
Q1: Why compare wheel and tire diameters?
A: Comparing diameters helps ensure proper fitment and maintains vehicle performance characteristics like speedometer accuracy and gearing.
Q2: How do I measure wheel and tire diameter?
A: Overall diameter can be calculated from tire size markings or measured directly when mounted and inflated.
Q3: What's an acceptable difference in diameters?
A: Generally, staying within 3% of the original diameter is recommended to avoid significant speedometer errors.
Q4: Does this affect my speedometer?
A: Yes, larger diameters will make your speedometer read slower than actual speed, while smaller diameters make it read faster.
Q5: What about width and offset?
A: This calculator only compares diameters. For complete fitment analysis, width and offset must also be considered.