Wheel Bolt Pattern Comparator
Check that the bolt pattern fits your hub. Use the calculator below. Results update as you type.
How the Wheel Bolt Pattern Comparator Works
This comparator works by comparing the lug count and pitch circle diameter (PCD) of 2 bolt patterns. Both values must match for a wheel to mount without an adapter.
- Enter the vehicle's bolt pattern, for example 5x114.3.
- Enter the wheel's bolt pattern, for example 5x4.5.
- Read the conversion: 4.5 in = 114.3 mm.
- Read the result: Match.
The Formula
The formula converts PCD with PCD (in) = PCD (mm) ÷ 25.4 and tests Lugs_A = Lugs_B and PCD_A = PCD_B.
PCD (in) = PCD (mm) ÷ 25.4 Match = (Lugs equal) AND (|PCD_A − PCD_B| < 0.5 mm)Worked example: 6x139.7 is 6 lugs on a 139.7 mm circle, which equals 6x5.5 in. A 6x135 pattern does not match it.
Conversion Table
The conversion table lists 13 common bolt patterns in metric and inch notation. Patterns run from 4x100 to 8x170.
Some patterns look close but do not match. A 5x112 and 5x114.3 differ by 2.3 mm, which is enough to stop the wheel from seating flat without adapters.
| Metric Pattern | Lugs | PCD (mm) | PCD (in) | Inch Pattern |
|---|---|---|---|---|
| 4x100 | 4 | 100 | 3.937 | 4x3.94 |
| 4x108 | 4 | 108 | 4.252 | 4x4.25 |
| 5x100 | 5 | 100 | 3.937 | 5x3.94 |
| 5x108 | 5 | 108 | 4.252 | 5x4.25 |
| 5x112 | 5 | 112 | 4.409 | 5x4.41 |
| 5x114.3 | 5 | 114.3 | 4.500 | 5x4.5 |
| 5x120 | 5 | 120 | 4.724 | 5x4.72 |
| 5x127 | 5 | 127 | 5.000 | 5x5 |
| 5x139.7 | 5 | 139.7 | 5.500 | 5x5.5 |
| 6x135 | 6 | 135 | 5.315 | 6x5.31 |
| 6x139.7 | 6 | 139.7 | 5.500 | 6x5.5 |
| 8x165.1 | 8 | 165.1 | 6.500 | 8x6.5 |
| 8x170 | 8 | 170 | 6.693 | 8x6.69 |
What Is the Wheel Bolt Pattern Comparator?
The Wheel Bolt Pattern Comparator is a tool that checks whether 2 bolt patterns are the same. A bolt pattern, known as a lug pattern in many catalogs, states the number of lugs and the diameter of the circle through their centers.
US makers often state patterns in inches (5x4.5); European and Asian makers state them in millimeters (5x114.3). The comparator converts both into one unit.
Common Uses
This comparator has 4 uses: wheel shopping, cross-brand swaps, adapter decisions and used-wheel checks.
- Shop for wheels: Confirm a wheel fits the hub.
- Swap across brands: Check patterns shared by different makers.
- Decide on adapters: See when an adapter is needed.
- Check used wheels: Verify patterns before buying.