Wheel Backspacing Calculator

Calculate Wheel Backspacing



Formula

To calculate the wheel backspacing (\(WB\)):

\[ WB = \frac{W + 2 \cdot O}{2} \]

Where:

What is a Wheel Backspacing?

Wheel backspacing is a measurement used in the automotive industry to determine the position of the wheel in the wheel well. It is the distance from the mounting surface of the wheel to the back edge of the wheel. This measurement is important because it affects the clearance between the wheel and the vehicle’s body, suspension components, and brake parts. Incorrect backspacing can lead to issues such as tire rubbing, improper vehicle handling, and potential damage to the wheel or vehicle.

Example Calculation 1

Let's assume the following values:

Using the formula:

\[ WB = \frac{8 + 2 \cdot 1}{2} = \frac{8 + 2}{2} = \frac{10}{2} = 5 \]

The wheel backspacing is 5 inches.

Example Calculation 2

Let's assume the following values:

Using the formula:

\[ WB = \frac{10 + 2 \cdot 2}{2} = \frac{10 + 4}{2} = \frac{14}{2} = 7 \]

The wheel backspacing is 7 inches.