How to Measure and Verify Backspacing for Custom Wheel Fitment on Mazda Cx-5

When customizing your Mazda CX-5 with aftermarket wheels, ensuring proper fitment is essential for safety and performance. One critical measurement is backspacing, which determines how far the wheel extends inward or outward from the hub. Correct backspacing helps prevent rubbing and maintains proper clearance.

Understanding Backspacing

Backspacing is the distance from the mounting pad of the wheel to the inner edge of the wheel. It is usually measured in inches or millimeters. Proper backspacing ensures that the wheel fits within the wheel well without rubbing against suspension components or the fender.

Tools Needed for Measurement

  • Measuring tape or ruler
  • Caliper (optional for more precise measurement)
  • Wheel with the correct bolt pattern
  • Masking tape (optional)

Step-by-Step Measurement Process

Follow these steps to accurately measure backspacing on your Mazda CX-5:

1. Remove the Wheel

Safely lift your vehicle using a jack and secure it with jack stands. Remove the wheel you want to measure.

2. Measure from the Hub

Place the measuring tape or caliper across the mounting surface of the wheel hub. Measure the distance from the hub’s center to the back edge of the wheel mounting surface. This is your backspacing measurement.

3. Record the Measurement

Note the measurement in inches or millimeters. Repeat the process on the other side of the vehicle for consistency if needed.

Verifying and Comparing Measurements

To verify your wheel fitment, compare your measured backspacing with the specifications recommended for your Mazda CX-5 or the aftermarket wheel’s specifications. Typically, stock wheels have a backspacing around 6.1 inches (155 mm).

If your measurements differ significantly, you may need spacers or different wheels to achieve proper fitment. Consult your wheel and tire professional for advice.

Final Tips for Safe Fitment

  • Always double-check measurements before purchasing new wheels.
  • Consider the offset alongside backspacing for a complete fitment picture.
  • Test fit wheels before permanently installing to ensure clearance.
  • Consult your vehicle’s manual or a professional for specific recommendations.

Accurately measuring and verifying backspacing ensures your Mazda CX-5 maintains safe handling and a polished appearance with custom wheels. Proper fitment protects your vehicle components and enhances your driving experience.