What bolt pattern is 6x5 5?
Six lugs on a 5.5-inch bolt circle, written as 6x5.5 (equivalently 6x139.7 mm), is a common wheel mounting pattern.
Understanding the 6x5.5 notation
The bolt pattern describes how many lug holes your wheel has and the diameter of the circle those holes form. In this case, 6 is the number of lug holes, and 5.5 inches is the circle diameter. A wheel with 6x5.5 can only mount on hubs that have a matching 6-lug pattern with that circle size.
Metric equivalent
6x5.5 corresponds to a PCD of 139.7 millimeters. This conversion is exact: 5.5 inches times 25.4 mm per inch equals 139.7 mm.
Practical considerations
In addition to the number of lugs and the bolt circle diameter, you must consider hub bore size, wheel offset, and center bore compatibility. Even if a wheel has the same 6x5.5 pattern, a mismatched hub bore or offset can cause centering and clearance issues.
How to confirm your vehicle’s bolt pattern
To be sure any wheel or adapter will fit, verify your vehicle's bolt pattern using these steps:
- Check the owner's manual, driver-side door jamb placard, or the VIN plate for wheel specifications.
- Inspect an existing wheel and count the lug holes; measure the diameter by drawing a circle through the centers of opposite studs.
- Measure the distance between opposite lug holes with a caliper or a ruler to get the PCD in millimeters, or use a conversion for inches to mm.
- Consult a trusted wheel database, retailer, or service shop with your make/model to confirm compatibility, including hub bore size and offset.
Verifying these details helps ensure the wheels fit securely and rotate true without rubbing or hub centering issues.
Summary
6x5.5 means six lug holes on a 5.5-inch bolt circle (139.7 mm). Always confirm hub bore and offset in addition to the bolt pattern before purchasing wheels or adapters.
