1. What is Wheel Fitment?

Wheel fitment refers to the compatibility between a vehicle's wheel hub and aftermarket wheels. Proper fitment ensures safety, performance, and prevents damage to vehicle components.

2. How Does the Calculator Work?

The calculator checks three critical parameters:

Where:

• PCD (Pitch Circle Diameter) — The diameter of the circle formed by the wheel bolts/lugs
• Offset — The distance from wheel centerline to mounting surface
• Center Bore — The diameter of the center hole that fits over the hub

Compatibility Rules:

• PCD must match exactly
• Offset should be within ±5mm of vehicle specification
• Wheel center bore must be equal to or larger than vehicle center bore

3. Importance of Proper Wheel Fitment

Details: Incorrect wheel fitment can cause vibration, handling issues, bearing failure, and in extreme cases, wheel detachment while driving.

4. Using the Calculator

Tips: Enter all measurements in millimeters. Consult your vehicle's manual or wheel manufacturer for exact specifications. Always verify fitment with physical test fitting when possible.

5. Frequently Asked Questions (FAQ)

Q1: What if PCD doesn't match exactly?
A: PCD must match exactly. Even 1mm difference can prevent proper installation and cause safety hazards.

Q2: Can I use wheel spacers or adapters?
A: Spacers can adjust offset, and adapters can convert PCD, but these modifications may affect handling and warranty.

Q3: What about center bore rings?
A: If wheel center bore is larger, hub-centric rings can be used to ensure proper centering and reduce vibration.

Q4: How accurate are these calculations?
A: This calculator provides theoretical compatibility. Always verify with professional installation and test fitting.

Q5: What other factors affect wheel fitment?
A: Wheel width, tire size, brake clearance, and suspension components also impact overall fitment and should be considered.