GMC Acadia Wheel Bolt Pattern: A Practical Fitment Guide
Direct Answer and Scope
For most modern GMC Acadia models, the wheel bolt pattern is 6x120 millimeters. This means the wheel has six lug holes arranged on a circle with a diameter of 120 millimeters. The specification is consistent for the second-generation Acadia and the revised full-size model, but specific trim levels and wheel diameters can affect other required measurements such as the center bore, thread pitch, and required lug nut seat style.
Breakdown by Model Generation
The GMC Acadia has existed in two distinct body styles under the same name. The original full-size crossover used a different platform than the later mid-size version. The critical fitment data varies between these generations.
Generation | Approximate Years | Bolt Pattern | Thread Pitch | Center Bore; First Generation | 2007–2016 | 6x132 mm | M14 x 1.5 | 78.1 mm; Second Generation | 2017–2023 | 6x120 mm | M14 x 1.5 | 66.9 mm; Facelifted Second Gen | 2024–Present | 6x120 mm | M14 x 1.5 | 66.9 mm
Key Measurements Explained
The bolt pattern, often called PCD (Pitch Circle Diameter), is the primary identifier. However, simply matching 6x120 is not enough for a safe fit. The center bore is the large hole in the middle of the wheel that centers it on the hub. If the wheel's center bore is smaller than the hub, it will not sit flush. If it is larger, you need hub-centric rings to prevent vibration.
Thread pitch refers to the distance between the threads on the wheel studs. The Acadia universally uses a metric M14 stud with a 1.5 millimeter pitch on both major generations. Using a lug nut with the wrong thread pitch can strip the studs and cause wheel separation.
Common Confusion: 6x120 vs. 6x132
The most significant risk when buying wheels for a used Acadia involves the generation gap. A wheel designed for a 2007–2016 Acadia has a 6x132 mm pattern. It will not physically bolt onto a 2017 or newer vehicle, as the lug holes will not align with the studs. Conversely, a modern 6x120 wheel will not fit the older generation. Always verify the specific model year of the vehicle before purchasing used wheels.
Lug Nut Specifications and Torque
The Acadia requires conical seat lug nuts. The factory lug nut size is generally a 22 mm hex head to accommodate the M14 stud. Proper installation requires a torque wrench. The recommended torque specification for the wheel lug nuts on the second-generation Acadia is 140 lb-ft (190 Nm). For the first generation, the specified torque is also 140 lb-ft (190 Nm). Fasteners should be tightened in a star pattern to ensure even clamping force.
Aftermarket and Wheel Spacer Implications
When considering aftermarket wheels, you must account for offset and backspacing in addition to the bolt pattern. The second-generation Acadia typically runs a high positive offset, meaning the mounting surface is closer to the outside face of the wheel. If you intend to use wheel adapters to change the bolt pattern or push the wheels outward, you must ensure the adapter is hub-centric for the 66.9 mm hub and provides the correct 6x120 stud pattern.
Practical Guidance for Your Next Steps
If you are sourcing replacement steel wheels or used aluminum wheels, start by checking the sticker on the driver door jamb for the exact tire size and recommended pressure, then confirm the vehicle year. For 2017 and newer models, look for a 6x120 pattern and a 66.9 mm center bore. For older models, the 6x132 pattern is mandatory. Do not attempt to force a wheel onto the hub if the lug holes do not line up perfectly.
Known Data Gaps
Available documentation does not provide specific bolt pattern data for the limited-production 2024 Acadia AWD versus FWD variants, as the hub assembly is identical across these drivetrains. Additionally, no verified specification is available for any factory 22-inch wheel options unique to the Denali trim regarding changes to the hub bore; they are assumed to share the standard 66.9 mm specification unless measured otherwise.