Are all Chevy 6 lugs the same?

The short answer is no, not all Chevy 6 lug patterns are the same. Chevy has used several different 6 lug patterns over the years, with variations in the bolt circle diameter and lug spacing. Understanding these differences is important when replacing wheels or upgrading components on your Chevy vehicle.

Chevy 6 Lug Patterns Explained

Chevy has utilized a few different 6 lug patterns on their trucks, SUVs, and some passenger cars over the decades. The most common 6 lug patterns found on Chevys are:

• 6x5.5" (139.7mm) - This is the most widespread 6 lug pattern used on Chevy trucks, SUVs, and some cars. It has a bolt circle diameter of 139.7mm (5.5 inches).


• 6x5.0" (127mm) - This slightly smaller 6 lug pattern was used on some older Chevy trucks and SUVs, with a 127mm (5.0 inch) bolt circle.


• 6x4.75" (120.65mm) - A less common 6 lug pattern found on some Chevy passenger cars, with a 120.65mm (4.75 inch) bolt circle.

It's important to note that the lug pattern, bolt circle diameter, and lug spacing all need to match when replacing wheels or upgrading components on your Chevy vehicle. Using the wrong 6 lug pattern can result in the wheels not fitting properly and potentially causing safety issues.

Identifying Your Chevy's 6 Lug Pattern

The best way to determine your Chevy's 6 lug pattern is to consult your owner's manual or look for a sticker inside the driver's side door jamb that lists the vehicle's specifications, including the wheel and tire information. You can also measure the bolt circle diameter yourself using a tape measure or caliper.

Knowing the correct 6 lug pattern for your Chevy will ensure you purchase the right replacement wheels or components that will fit your vehicle safely and securely.

Are all 6 lug Chevy wheels interchangeable?

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. 

Are all six lug patterns the same?

No, not all 6-lug bolt patterns are the same; while many common patterns exist, there are variations in spacing and center bore diameter between different vehicle makes and models. For example, a common pattern for older Chevy trucks is 6-lug, 5.5-inch (6x139.7mm), but other modern vehicles may have patterns like 6x120mm or 6x135mm. 
Common 6-lug bolt patterns

• 6x139.7mm: A very common pattern, often referred to as 6x5.5 inches, used by many manufacturers like Chevrolet (e.g., Silverado 1500) and Ford.
• 6x135mm: Found on vehicles like some Ford F-150s.
• 6x120mm: Used on some Chevrolet models, such as the Blazer. 

Why bolt patterns differ

• Vehicle design: Different manufacturers use different bolt patterns for various reasons, including vehicle design and cost reduction.
• Center bore size: Even with a similar bolt pattern, the center bore (the hole in the wheel that fits over the vehicle's hub) can vary significantly, preventing wheels from fitting properly. 

How to confirm your bolt pattern

• Count the lugs: All 6-lug patterns have six bolts. 
• Measure the distance:
  • If the number of lugs is even (like 6), measure from the center of one stud to the center of the one directly opposite it. 
  • If the number of lugs is odd, the measurement is from the center of one lug to the outer edge of the lug opposite it. 
• Check vehicle specifications: The most reliable way is to check your vehicle's manual or look up the specifications for your specific make, model, and year. You can also visit a mechanic or tire shop to have it measured accurately. 

Are all Chevy lug nuts the same size?

No, not all Chevy lug nuts are the same size. There are various wheel nuts for Chevy sedans, SUVs, and trucks in the market. Most Chevy vehicles use steel wheel nuts. The most common thread sizes that are used by Chevy cars are M14x1.

What 6 lug pattern does Chevy use?

6×5.5-inch
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.