1. What is Wheel Offset?

Wheel offset is the distance between the wheel's mounting surface and its centerline. It determines how far in or out the wheel sits in the wheel well and affects vehicle handling, suspension geometry, and tire clearance.

2. How Does the Calculator Work?

The calculator uses the wheel offset formula:

Where:

• \( Offset \) — Wheel offset in inches
• \( Backspace \) — Distance from mounting surface to inner edge in inches
• \( Width \) — Total wheel width in inches
• \( 0.5 \) — Constant accounting for wheel flange thickness

Explanation: This formula calculates the offset by subtracting half the wheel width and a constant from the backspace measurement.

3. Importance of Wheel Offset Calculation

Details: Proper wheel offset is crucial for vehicle safety, handling performance, and preventing tire rubbing against suspension components or wheel wells.

4. Using the Calculator

Tips: Enter backspace and width measurements in inches. Both values must be positive numbers. The result shows the offset in inches.

5. Frequently Asked Questions (FAQ)

Q1: What is positive and negative offset?
A: Positive offset means the mounting surface is toward the outside face, negative offset means it's toward the inside face of the wheel.

Q2: How does offset affect vehicle handling?
A: Incorrect offset can affect scrub radius, steering feel, and put additional stress on suspension components.

Q3: Can I use millimeters instead of inches?
A: Yes, but ensure all measurements use the same unit system for accurate results.

Q4: What happens if offset is too large or too small?
A: Too much positive offset can cause rubbing on suspension, while too much negative offset can cause rubbing on fenders.

Q5: Is this calculator accurate for all wheel types?
A: This calculator provides a general estimation. For precise measurements, consult with wheel manufacturers or professionals.