Buick GL8 LS Bolt Pattern, Center Bore & Wheel Offset (2024–2026)
Buick GL8 LS wheel fitment: 6x120 bolt pattern, 66.9mm center bore (2024–2026). OE wheel sizes and offsets for every GL8 LS variant we cover (3 guides), plus
- 6x120bolt pattern (PCD)
- 66.9 mmcenter bore
- M12x1.5 Nutwheel bolt / nut
- 3 guidesmodel years 2024–2026
Buick GL8 LS wheel specs by year and trim
| Year | Model / trim | Bolt pattern | Center bore | OE wheel |
|---|---|---|---|---|
| 2026 | Buick GL8 LS | 6x120 | 66.9 mm | 18x7J |
| 2025 | Buick GL8 LS | 6x120 | 66.9 mm | 18x7J |
| 2024 | Buick GL8 LS | 6x120 | 66.9 mm | 18x7J |
Factory wheel sizes on the Buick GL8 LS
Across the 3 Buick GL8 LS trims with a documented factory wheel, the OE diameter is 18 inch, width 7J. A forged wheel that keeps the 6x120 bolt pattern and the 66.9 mm hub bore and matches the factory offset listed on the model page bolts on without spacers or hub rings. Going one inch up in diameter with a lower-profile tyre keeps the rolling circumference inside the usual 1.5% tolerance; every extra 0.5J of width moves the outer lip about 6 mm outward at the same offset, and each 5 mm less offset moves the whole wheel 5 mm outward.
Forged wheels for the Buick GL8 LS (6x120)
Get a quote for Buick GL8 LS wheels
Vehicles With the Same Hub as the Buick GL8 LS (6x120, 66.9 mm Bore)
In our database, 22 other vehicle entries from 4 makes use exactly the same 6x120 bolt pattern and 66.9 mm center bore. Factory wheels from these cars bolt on and center on the hub without rings; offset and width still have to be checked.
6x120 is used by 0.5% of the vehicle entries in our database (34 of 6,503); 97.1% of those also use a 66.9 mm center bore.
Hub-Centric Rings for a 66.9 mm Center Bore
A wheel with a center bore larger than 66.9 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 67.1 mm | 67.1 → 66.9 mm |
| 70.1 mm | 70.1 → 66.9 mm |
| 70.5 mm | 70.5 → 66.9 mm |
| 71.6 mm | 71.6 → 66.9 mm |
| 73.1 mm | 73.1 → 66.9 mm |
ANKUSI forged wheels are bored to exactly 66.9 mm for this vehicle, so no ring is needed.
Sources and Last Update
Bolt pattern and center bore were checked against at least two independent fitment references before publication.
This record is part of the open ANKUSI Wheel Fitment Dataset (DOI 10.5281/zenodo.23241521, CC BY 4.0).
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.
FAQ
What is the bolt pattern on a Buick GL8 LS?
The Buick GL8 LS uses a 6x120 bolt pattern with a 66.9mm center bore across every GL8 LS variant in our database (3 guides, 2024–2026).
What is the Buick GL8 LS center bore?
The hub-centric center bore is 66.9 mm. Aftermarket wheels should match this bore or use hub-centric rings so the hub, not the bolts, carries the load.
Do all Buick GL8 LS years share the same wheel fitment?
The bolt pattern and center bore are the same across the years we cover, but OE wheel width and offset differ by trim, so check the exact model line before choosing an aftermarket size.
Which forged wheels fit the Buick GL8 LS?
Any wheel drilled 6x120 with a 66.9mm hub bore in the offset range shown on the model guide. ANKUSI forges wheels to order for this exact specification, in 14–24 inch diameters, so no adapters or hub rings are needed.