Wheel Bolt Pattern Calculator

The Wheel Bolt Pattern Calculator converts your lug hole measurements into the standard bolt pattern notation used to match wheels to vehicles. Select your number of lug holes (4, 5, 6, or 8), enter the measured distance between lug centers, and choose your measurement unit and measurement type to get the bolt pattern in metric and imperial, the PCD diameter, and the standard notation (e.g., 5×114.3).

Distance measured between lug centers

Measurement Unit *

How you measured the distance

Results

Bolt Pattern (Metric)

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Bolt Pattern (Imperial)

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PCD Diameter

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Standard Notation

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Frequently Asked Questions

What is a bolt pattern?

A bolt pattern, also known as lug pattern or PCD (Pitch Circle Diameter), measures the imaginary circle formed by the lug nut holes at the center of your wheel. It's expressed as two numbers: the number of lugs and the diameter of the circle in millimeters or inches.

How do I measure bolt patterns for different lug counts?

For 4, 6, or 8 lug wheels, measure from the center of one lug hole to the center of the hole directly across from it. For 5 or 7 lug wheels, measure from the center of one lug hole to the outer edge of the hole farthest away, as there's no direct opposite hole.

What's the difference between metric and imperial bolt patterns?

Metric bolt patterns are measured in millimeters (e.g., 5x114.3), while imperial patterns use inches (e.g., 5x4.5). Most modern vehicles use metric measurements, but older American vehicles often use imperial measurements.

Why is knowing my bolt pattern important?

Knowing your bolt pattern is crucial for wheel fitment and safety. Installing wheels with the wrong bolt pattern can cause wheel detachment, vibration, and dangerous driving conditions. Always verify compatibility before purchasing new wheels.

What does PCD stand for?

PCD stands for Pitch Circle Diameter, which is the diameter of the imaginary circle that passes through the center of all the lug holes on a wheel. It's the technical term for bolt pattern measurement.

Can I use wheels with a different bolt pattern on my vehicle?

No, you should never use wheels with a different bolt pattern than your vehicle's specification. Even small differences can compromise safety. Always match the exact bolt pattern, including both the number of lugs and the PCD measurement.

Are there adapters to change bolt patterns?

Wheel adapters and spacers exist to convert bolt patterns, but they add complexity, weight, and potential safety risks. It's always better to use wheels that match your vehicle's original bolt pattern specifications.