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Last Updated on May 17, 2024 by Mutiara
When it comes to customizing or replacing the wheels on your Chevrolet or GMC vehicle, understanding wheel bolt patterns is crucial. This often-overlooked detail can make or break your wheel installation process, ensuring both safety and optimal performance. In this blog post, we’ll dive deep into what wheel bolt patterns are, why they matter, and the specific bolt patterns for various Chevrolet and GMC models.
What is a Wheel Bolt Pattern?
A wheel bolt pattern (also known as lug pattern or bolt circle) refers to the arrangement of the bolt holes on a wheel. It is defined by two key measurements:
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- Number of Lug Holes: This indicates how many bolts or studs the wheel uses.
- Bolt Circle Diameter (BCD): This is the diameter of an imaginary circle that passes through the center of each lug hole.
For example, a 5×120 bolt pattern means there are five bolt holes arranged in a circle with a diameter of 120 millimeters.
Why Wheel Bolt Patterns Matter
Choosing the correct bolt pattern for your vehicle is essential for several reasons:
- Safety: Incorrect bolt patterns can lead to improper wheel fitment, causing vibrations, uneven tire wear, or even wheel detachment.
- Performance: Properly fitting wheels ensure better handling and stability.
- Customization: Knowing your bolt pattern allows you to select from a wider range of aftermarket wheels.
Chevrolet-GMC Wheel Bolt Patterns
Chevrolet and GMC vehicles share many components, including wheel bolt patterns, due to their common ownership and platform sharing. Here’s a look at some common bolt patterns for popular Chevrolet and GMC models.
List of bolt patterns & other wheel specs for Chevrolet & GMC vehicles. Click the icon next to each column title to sort the results.
| Model | Year | Size | Bolt pattern | Lug nut thread | MM | OS |
|---|
| All mid & full size rwd | 55-88 | 14″,15″ | 5 x 120.7 | 7/16-rh | | L |
| Wagons & hd models | 55-95 | 15″ | 5 x 127.0 | 1/2-rh | | L |
| Belair, Biscayne | 77-87 | 15 x 7 | 5 x 120.7 | 7/16-rh | | L |
| Beretta | 87+ | 13 x 5.5 | 5 x 100 | 12mm x 1.5 | 57.1 | H |
| Camaro | 82-92 | 15 x 7 | 5 x 120.7 | 12mm x 1.5 | | L |
| Camaro | 93+ | 16 x 7.5 | 5 x 120.7 | 12mm x 1.5 | 70.3 | H |
| Camaro, IROC | 85-92 | 16 x 8 | 5 x 120.7 | 12mm x 1.5 | | L/M |
| Camaro Z-28 | 93+ | 16 x 8 | 5 x 120.7 | 12mm x 1.5 | 70.3 | H |
| Caprice Classic | 90-97 | 15 x 7 | 5 x 127.0 | 12mm x 1.5 | | L |
| Cavalier | 80+ | 14 x 6 | 5 x 100 | 12mm x 1.5 | 57.1 | H |
| Celebrity | 80-89 | 13 x 5.5 | 5 x 100 | 12mm x 1.5 | 57.1 | H |
| Celebrity Eurosport | 82-89 | 14 x 6 | 5 x 115 | 12mm x 1.5 | 70.3 | H |
| Chevette | 75-86 | 13 x 5 | 4 x 100 | 12mm x 1.5 | 57.1 | H |
| Citation | 80-86 | 13 x 5.5 | 5 x 100 | 12mm x 1.5 | 57.1 | H |
| Corsica | 87+ | 15 x 6 | 5 x 100 | 12mm x 1.5 | 57.1 | H |
| Corvette | 68-82 | 15 x 8 | 5 x 120.7 | 7/16-rh | | L |
| Corvette | 84-87 | 16 x 9.5 | 5 x 120.7 | 12mm x 1.5 | | M |
| Corvette | 88-89 | 16 x 9.5 | 5 x 120.7 | 12mm x 1.5 | | M |
| Corvette | 90-96 | 17 x 9.5 | 5 x 120.7 | 12mm x 1.5 | | H |
| Corvette | 93-96 | 17 x 8.5 | 5 x 120.7 | 12mm x 1.5 | | H |
| Corvette ZR1 | 91+ | 17 x 9.5F | 5 x 120.7 | 12mm x 1.5 | | H |
| Corvette ZR1 | 91+ | 17 x 11R | 5 x 120.7 | 12mm x 1.5 | | H |
| Impala, Caprice | 77-87 | 15 x 7 | 5 x 120.7 | 7/16-rh | | L |
| Impala | 99+ | 15 x 6 | 5 x 115 | 12mm x 1.5 | 70.3 | H |
| Smpala ss | 94-97 | 16 x 8 | 5 x 127.0 | 12mm x 1.5rh | | L |
| lumina | 90+ | 15 x 6 | 5 x 115 | 12mm x 1.5 | 70.3 | H |
| lumina | 90+ | 16 x 6.5 (opt) | 5 x 115 | 12mm x 1.5 | 70.3 | H |
| Malibu | 97+ | 15 x 7 | 5 x 115 | 12mm x 1.5 | 70.3 | H |
| Monte Carlo | 95+ | 15 x 6 | 5 x 115 | 12mm x 1.5 | 70.3 | M |
| Monte Carlo | 95+ | 16 x 6.5 (opt) | 5 x 115 | 12mm x 1.5 | 70.3 | H |
| Nova, Spectrum | 86-89 | 13 x 5.5 | 4 x 100 | 12mm x 1.5 | | H |
| Prizm | 90+ | 14 x 5.5 | 4 x 100 | 10mm x 1.25 | | H |
| Sprint | 88-89 | 12 x 4 | 4 x 114.3 | 10mm x 1.25 | | H |
| Venture | 97+ | 15 x 6 | 5 x 115 | 12mm x 1.5 | 70.3 | H |
| 1/2 Ton Blazer, Jimmy, sub full size 2 x 4 | 71-91 | 15 x 6(7) | 5 x 127.0 | 1/2-rh | | L |
| 1/2 Ton Blazer, Jimmy, sub full size 4 x 4 | 71-91 | 15 x 7 | 6 x 139.7 | 7/16-rh | | L |
| 1/2 Ton Blazer, Jimmy, Suburban, | | | | | | |
| Tahoe, Yukon, denali full size 4 x 4 | 92+ | 16 x 7 | 6 x 139.7 | 14mm x 1.5 | 78.3 | M |
| tahoe, Yukon 2 x 4 | 92-99 | 15 x 6(7) | 5 x 127.0 | 14mm x 1.5 | | L |
| 1/2 Ton Blazer, Jimmy, Suburban, | | | | | | |
| tahoe, Yukon 2 x 4 | 00+ | 15 x 6(7) | 6 x 139.7 | 14mm x 1.5 | 78.3 | L |
| 1/2 Ton truck all models 2 x 4 | 67-87 | 15 x 6(7) | 5 x 127.0 | 1/2-rh | | L |
| 1/2 Ton truck all models 2 x 4 | 88-98 | 15 x 6(7) | 5 x 127.0 | 14mm x 1.5 | | L |
| 1/2 Ton truck all models 4 x 4 | 67-87 | 15 x 7 | 6 x 139.7 | 7/16-rh | | L |
| 1/2 Ton truck all models 4 x 4 | 88-98 | 16 x 7 | 6 x 139.7 | 14mm x 1.5 | 78.3 | M |
| 1/2 Ton trucks 2 x 4 & 4 x 4 | 99+ | 16 x 7 | 6 x 139.7 | 14mm x 1.5 | 78.3 | M |
| 3/4 Ton truck 2 x 4 & 4 x 4 | 67+ | 16 x 7 | 6 x 139.7 | 1/2 or 14mm | | L |
| Astro, Safari | 85+ | 15 x 6 | 5 x 127.0 | 1/2-rh or | | L |
| Avalanche | 02+ | 16 x 7 | 6 x 139.7 | 14mm x 1.5 | 78.3 | |
| Cyclone, Typhoon | all | 16 x 8 | 5 x 120.7 | 12mm x 1.5 | | H |
| El Camino, Caballero | 64-81 | 14 x 6 | 5 x 120.7 | 7/16-rh | | L |
| El Camino, Caballero | 82-87 | 14 x 6 | 5 x 120.7 | 12mm x 1.5 | | L |
| Envoy | 02+ | 16 x 7 | 6 x 127 | 12mm x 1.5 | 78.3 | H |
| Lumina APV | 90-96 | 14 x 6 | 5 x 115 | 12mm x 1.5 | 70.3 | H |
| S-10, s-15 Blazer, Jimmy, | | | | | | |
| Sonoma 2 x 4 mid size | 82+ | 15 x 7 | 5 x 120.7 | 12mm x 1.5 | | L |
| S-10, s-15 Blazer, Jimmy, | | | | | | |
| Sonoma 4 x 4 mid size | 83+ | 15 x 6 | 5 x 120.7 | 12mm x 1.5 | | H |
| Savana 1500 | 01+ | 16 x 6 | 5 x 127.0 | 14mm x 1.5 | | |
| Tracker | 98+ | 15 x 6 | 5 x 139.7 | 12mm x 1.25 | | L/M |
| TrailBlazer | to 02 | 16 x 7 | 6 x 127 | 12mm x 1.5 | 78.3 | H |
| Van g-series, 1/2 Ton | 71-96 | 15 x 6 | 5 x 127.0 | 1/2-rh | | L |
| Van g-series, 3/4 Ton | 96-97 | 16 x 6 | 6 x 139.7 | 14mm x 1.5 | | L |
| Venture | to 97 | 15 x 6 | 5 x 115 | 12mm x 1.5 | 70.3 | |
How to Measure a Bolt Pattern
To measure your vehicle’s bolt pattern:
- Count the lug holes: If the wheel has an even number of lug holes, measure from the center of one hole to the center of the hole directly across from it.
- If the wheel has an odd number of holes, measure from the center of one hole to the furthest edge of a hole across from it. This gives the diameter of the circle formed by the bolt holes.
Tips for Choosing the Right Wheels
- Check Compatibility: Always verify that the wheel’s bolt pattern matches your vehicle’s pattern.
- Hub Bore Size: Ensure the hub bore size of the wheel matches your vehicle’s hub. Wheels with larger hub bores can use hub-centric rings to fit properly.
- Offset and Backspacing: These measurements affect how the wheel sits in the wheel well and are critical for ensuring no rubbing against the vehicle’s suspension or body.
Understanding your Chevrolet or GMC vehicle’s wheel bolt pattern is essential for both safety and performance. Whether you’re upgrading to aftermarket wheels or replacing damaged ones, knowing the correct bolt pattern ensures a perfect fit and optimal driving experience. Always double-check the specifications and consult with a professional if you’re unsure, to keep your ride smooth and secure.
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Ford MTX-75 transmission
The Ford MTX-75 (Manual TransaXle), is a 5-speed transmission developed by Ford Motor Company for its larger engined front wheel drive models. "75" refers to Read more
By familiarizing yourself with these details, you can confidently make informed decisions about your vehicle’s wheels, enhancing both its aesthetic appeal and functional performance.
