How to measure wheel bolt pattern

How to measure wheel bolt pattern

Buying wheels is fun right up until you hit the specs. Suddenly you're staring at things like 5x114.3 or 5x112 and wondering if you need a geometry class to make a set of rims fit.

You don't. Measuring bolt pattern is totally doable at home. The main trick is using the right method for your lug count, especially on 5-lug hubs.

What bolt pattern means

Bolt pattern (also called PCD or lug pattern) is:

• lug count (how many holes: 4, 5, 6, 8…)
• bolt circle diameter (the diameter of the imaginary circle running through the centers of the lugs)

So 5x114.3 means 5 lugs on a 114.3mm circle.

Tools you need

• Best: digital caliper
• Works: ruler or tape measure
• Helpful: straightedge and a marker

Step 1: Count the lugs

Count the lug holes on the wheel or studs on the hub. That’s your first number.

Step 2: Measure the bolt circle (PCD)

The method depends on lug count:

4-lug

Measure from the center of one lug hole to the center of the lug hole directly across. That distance is the PCD (example: 100mm = 4x100).

6-lug and 8-lug

Same idea as 4-lug: center-to-center across the hub to the opposite lug hole.

5-lug (the tricky one)

There is no lug directly opposite. The easiest DIY approach is:

• Measure from the center of one lug hole to the outer edge of the lug hole farthest away.

That number will line up closely with standard 5-lug sizes like 5x100, 5x112, 5x114.3, 5x120.

Don't confuse 5x112 and 5x114.3

They're close, and it's a super common mistake. If you're unsure, use a caliper and measure twice from different lugs. Don't round aggressively.

Quick reminder: bolt pattern isn't the whole fitment

Before ordering wheels, also confirm center bore, offset, width/diameter, and lug seat type. Bolt pattern can be correct and the wheel can still not fit.

If you tell me your lug count and the measurement you got (mm or inches), I'll help you identify the exact bolt pattern quickly.