Chevrolet-GMC wheel bolt patterns

Chevrolet-GMC wheel bolt patterns

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:

  1. Number of Lug Holes: This indicates how many bolts or studs the wheel uses.
  2. 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:

  1. 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.
  2. 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

  1. Check Compatibility: Always verify that the wheel’s bolt pattern matches your vehicle’s pattern.
  2. 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.
  3. 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.

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.

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