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 relative to the vehicle's suspension components. Mark Sink offset is a specific calculation method used in wheel customization.

2. How Does the Calculator Work?

The calculator uses the Mark Sink offset formula:

Where:

• \( Wheel\ Width \) — Total width of the wheel (mm)
• \( Backspacing \) — Distance from mounting surface to inner edge (mm)

Explanation: Positive offset means the mounting surface is toward the front (street side) of the wheel. Negative offset means it's toward the back (brake side).

3. Importance of Correct Offset

Details: Proper wheel offset ensures correct wheel positioning, prevents rubbing against suspension components, maintains proper scrub radius, and affects vehicle handling characteristics.

4. Using the Calculator

Tips: Measure wheel width and backspacing accurately in millimeters. Ensure measurements are taken from the correct points for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between offset and backspacing?
A: Backspacing measures from the mounting surface to the inner edge, while offset measures from the centerline to the mounting surface.

Q2: How does offset affect my vehicle?
A: Incorrect offset can cause rubbing, affect handling, stress wheel bearings, or cause interference with brake components.

Q3: What's a typical offset range?
A: Most passenger vehicles use +25mm to +50mm offset, but this varies by vehicle and wheel size.

Q4: Can I use this for aftermarket wheels?
A: Yes, this calculator helps determine if aftermarket wheels will fit properly with your vehicle's specifications.

Q5: What if I get negative offset?
A: Negative offset means the wheel will extend further outward, which may require fender modifications or result in a more aggressive stance.