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What lug pattern is a 2009 Chevy Avalanche?

The 2009 Chevy Avalanche uses a 6-lug wheel pattern on a 5.5-inch bolt circle (6x139.7 mm).


Understanding lug patterns is essential when selecting new wheels, tires, or aftermarket rims for this GMT900-era vehicle. Below you'll find the precise specification and related notes to help you shop safely.


Lug pattern specifications


Here are the core measurements and what they mean for wheels you can mount on the Avalanche.



  • Bolt pattern: 6-lug (six studs on the wheel).

  • Bolt circle: 5.5 inches (139.7 mm) diameter.

  • Center bore: 78.1 mm (3.07 inches) – most wheels must accommodate this bore, or hub-centric rings may be needed.

  • Compatibility: applies to the 2007–2013 GMT900 Chevrolet Silverado/Sierra and related models including the Avalanche.


When buying wheels, ensure the hub bore and offset compatibility, as well as the stud size (typically M14x1.5 on GM trucks) and seat type (conical vs. flat).


Notes for wheel replacements


Always confirm with the vehicle's VIN or consult the owner's manual or a parts specialist to ensure the wheel configuration matches your specific Avalanche build, especially if you plan on aftermarket wheels or spacers.


Why this matters for maintenance and upgrades


Using the correct lug pattern prevents improper fitment, ensures safe braking performance, and avoids damage to wheel studs or hubs. The 6x139.7 mm pattern is a long-standing standard for GM full-size trucks of this era.


Summary


In short, the 2009 Chevy Avalanche uses a 6-lug bolt pattern on a 5.5-inch (139.7 mm) bolt circle. If you’re replacing wheels, verify the center bore (78.1 mm), offset, and stud size to ensure proper fitment and clearance for your vehicle.

What lug pattern is the same as 5x127?


A 5x127 (or 5x5) bolt pattern can be converted to other patterns like 5x114.3 (5x4.5) or 5x139.7 (5x5.5) using wheel adapters or spacers. These parts are bolted to the vehicle's hub, and their design converts the existing bolt pattern to a new one, allowing wheels with a different bolt pattern to be installed. It is critical to ensure the adapter is designed for your specific vehicle and the wheel you intend to use, as well as that it is installed correctly to avoid damage.
 
How it works

  • Wheel adapters and spacers: are custom-made metal plates that bolt onto your existing wheel hubs. 
  • They feature a different bolt pattern on the other side, which then connects to your new wheels. 
  • For example, an adapter for a 5x127 to 5x114.3 conversion would have five studs for a 5x127 pattern on the side that mounts to the vehicle, and five holes for a 5x114.3 pattern on the side that the new wheel mounts to. 

Common conversions
  • 5x127 (5x5) to 5x114.3 (5x4.5): Many modern cars use the 5x127 bolt pattern, and wheel adapters can convert this to the more common 5x114.3 pattern. 
  • 5x127 (5x5) to 5x139.7 (5x5.5): A popular conversion for older trucks and SUVs that can be converted from 5x127 to a 5x139.7 pattern, notes Amazon.com. 

Important considerations
  • Select the correct adapter: Make sure you are buying the correct adapter for your vehicle and the wheel you want to use. Double-check the size and specifications before purchasing. 
  • Proper installation: Always follow the installation instructions carefully. Overtightening lug nuts can cause damage, and it is recommended to torque them to the manufacturer's specifications. 
  • Hub clearance: Some adapters are thicker than others and may require shortening the factory wheel studs to ensure the wheel sits flush against the adapter. Consult the adapter's specifications to see if this is necessary. 



What lug pattern does a Chevy Avalanche have?


Every generation of Chevy Avalanche comes stock with a 6x139. 7 lug pattern. That's great news, because the 6x139. 7 bolt pattern, AKA 6x5.



What is the bolt pattern on a 2009 Avalanche?


6x139.7
What is the Chevy Avalanche lug pattern? Every generation of Chevy Avalanche comes stock with a 6x139. 7 lug pattern.



What cars have a 6x120 lug pattern?


Additionally, they are commonly found in vehicles like the Chevrolet Blazer, Colorado, Cadillac SRX, and XT5. So, don't miss the chance to transform your ride with our exceptional 6x120 rims at Discounted Wheel Warehouse!


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.