What size is a Chevy 6 lug?
The standard six-lug bolt pattern for Chevrolet trucks and most SUVs is 6x5.5 inches (139.7 mm).
While this pattern covers the majority of modern Chevys with six lug studs, variations exist by model and year. Always verify your exact vehicle’s specs before buying wheels or adapters.
Bolt pattern basics
Key points to understand about the 6x5.5 bolt pattern and how it affects wheel compatibility.
Commonality Across GM Vehicles
Chevrolet, GMC, and other GM brands often share the same 6x5.5 pattern across many trucks and SUVs, which can simplify wheel compatibility across models. However, there are exceptions, so always confirm for your specific vehicle.
- Six lug studs arranged on a circle with a diameter of 5.5 inches (139.7 mm).
- Center bore and offset must also match the wheel to ensure proper seating and clearance.
- Cross-brand compatibility exists within many GM products, but verify exact year/model to avoid fit issues.
Bottom line: for most six-lug Chevys, the bolt pattern is 6x5.5 inches. Always confirm with your vehicle’s official specs, as rare exceptions can occur.
How to verify the bolt pattern on your Chevy
Reliable ways to confirm your exact bolt pattern before ordering wheels or adapters:
- Check the owner's manual or a door jamb sticker for wheel specs, including bolt pattern, center bore, and offset.
- Measure the bolt circle: place a caliper or ruler across the centers of opposite lug holes; the diameter is the bolt circle.
- Consult a dealer or wheel professional with your VIN to pull the factory spec precisely.
These checks help ensure you get wheels that fit properly and safely.
Summary
The Chevy six-lug bolt pattern is most commonly 6x5.5 inches (139.7 mm). Verify this for your exact model and year, and check center bore and offset as well. When in doubt, consult official specifications or a professional to ensure proper fit and safety.
Are all Chevy 6 lugs the same?
No, not all 6-lug Chevy wheels are the same; while many models use the common 6x5.5-inch or 6x139.7mm bolt pattern, other Chevy models use different patterns, and some vehicles have variations in center bore or offset that prevent them from being interchangeable. Always verify the exact specifications for your specific year and model, including the bolt pattern, center bore, and offset, before purchasing new wheels to ensure a proper fit.
Common Chevy 6-lug patterns
- 6x5.5-inch / 6x139.7mm: This is the most common pattern, used on many full-size trucks and SUVs, including the Silverado 1500, and can be found in both metric and imperial measurements.
- Other patterns: While less common, some models have different 6-lug patterns. For example, some Blazer models use a 6x120mm bolt pattern, which is different from the 6x139.7mm used on the Silverado.
Key specifications to check
- Bolt pattern: The number of bolts and the diameter of the circle they form (e.g., 6x139.7mm).
- Center bore: The diameter of the hole in the center of the wheel, which must match or be larger than the vehicle's hub to fit properly.
- Offset: The distance from the wheel's mounting surface to the centerline of the wheel, which affects how the wheel sits in the wheel well.
Why you should always check
- Incorrect fitment: Using wheels with the wrong bolt pattern, center bore, or offset can prevent the wheel from fitting correctly and may even cause damage to your vehicle.
- Model and trim variations: Heavy-duty models, or even different trims on the same model, may have different requirements, so it's crucial to check the specifications for your specific vehicle.
- Safety and performance: Ensuring the correct fit is essential for your safety and the vehicle's performance, as it affects handling and grip.
Is 6x5 5 bolt pattern the same as 6x139?
Yes, 6x139.7 is the same as 6x5.5 because they are simply different ways of measuring the same bolt pattern—one in millimeters and the other in inches. The notation refers to a wheel with 6 lug holes that are 139.7mm or 5.5 inches apart from each other.
- 6x139.7: This is the metric measurement for the bolt pattern.
- 6x5.5: This is the standard (imperial) measurement for the same bolt pattern.
- Usage: This is a very common bolt pattern, especially for trucks and SUVs, so you can use either measurement when looking for wheels for vehicles that use this fitment.
What is a Chevy 6-lug?
What is the bolt pattern for a Chevy 6-lug truck or SUV? Typically, Chevy follows a pattern of “6-5.5-inch” on 6-lug vehicles. In other words, the wheels on Chevy trucks and SUVs usually have six lug bolts that are arranged in a circle that measures 5.5 inches in diameter.
What size is a 6-lug Chevy?
Again, the most common Chevy 6-lug measurements are the 6×5.5-inch pattern. This Chevy wheel bolt pattern has been the Chevy Silverado lug pattern for 1500 4×4 pickup trucks since the 1960s.
