Buick Regal GS Bolt Pattern, Center Bore & Wheel Offset (2012–2023)
Buick Regal GS wheel fitment: 5x115 bolt pattern, 70.3mm center bore (2018–2023); 5x120 bolt pattern, 66.9mm center bore (2012–2017). OE wheel sizes and offse
- 5x115bolt pattern (PCD), most common
- 70.3 mmcenter bore
- M12x1.5 Nutwheel bolt / nut
- 12 guidesmodel years 2012–2023
Bolt pattern by generation
- 5x115, 70.3 mm center bore — 2018–2023 (6 variants)
- 5x120, 66.9 mm center bore — 2012–2017 (6 variants)
Buick Regal GS wheel specs by year and trim
| Year | Model / trim | Bolt pattern | Center bore | OE wheel |
|---|---|---|---|---|
| 2023 | Buick Regal GS II | 5x115 | 70.3 mm | 19x8.5J |
| 2022 | Buick Regal GS II | 5x115 | 70.3 mm | 19x8.5J |
| 2021 | Buick Regal GS II | 5x115 | 70.3 mm | 19x8.5J |
| 2020 | Buick Regal GS II | 5x115 | 70.3 mm | 19x8.5J |
| 2019 | Buick Regal GS II | 5x115 | 70.3 mm | 19x8.5J |
| 2018 | Buick Regal GS II | 5x115 | 70.3 mm | 19x8.5J |
| 2017 | Buick Regal GS I Facelift | 5x120 | 66.9 mm | 19x8.5J |
| 2016 | Buick Regal GS I Facelift | 5x120 | 66.9 mm | 19x8.5J |
| 2015 | Buick Regal GS I Facelift | 5x120 | 66.9 mm | 19x8.5J |
| 2014 | Buick Regal GS I Facelift | 5x120 | 66.9 mm | 19x8.5J |
| 2013 | Buick Regal GS I | 5x120 | 66.9 mm | 19x8.5J |
| 2012 | Buick Regal GS I | 5x120 | 66.9 mm | 19x8.5J |
Factory wheel sizes on the Buick Regal GS
Across the 12 Buick Regal GS trims with a documented factory wheel, the OE diameter is 19 inch, width 8.5J. A forged wheel that keeps the bolt pattern and hub bore of your generation (see the table above) 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 Regal GS (5x115)
Get a quote for Buick Regal GS wheels
Vehicles With the Same Hub as the Buick Regal GS (5x115, 70.3 mm Bore)
In our database, 88 other vehicle entries from 8 makes use exactly the same 5x115 bolt pattern and 70.3 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.
5x115 is used by 3.2% of the vehicle entries in our database (209 of 6,503); 65.1% of those also use a 70.3 mm center bore.
Hub-Centric Rings for a 70.3 mm Center Bore
A wheel with a center bore larger than 70.3 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 70.5 mm | 70.5 → 70.3 mm |
| 71.6 mm | 71.6 → 70.3 mm |
| 72.6 mm | 72.6 → 70.3 mm |
| 73.1 mm | 73.1 → 70.3 mm |
ANKUSI forged wheels are bored to exactly 70.3 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 Regal GS?
The Buick Regal GS uses a 5x115 bolt pattern on most variants we cover with a 70.3mm center bore. Other generations use 5x120 / 66.9mm (2012–2017). Always check the exact year and trim before ordering.
What is the Buick Regal GS center bore?
The hub-centric center bore is 70.3 mm on the most common generation; see the table for variants. Aftermarket wheels should match this bore or use hub-centric rings so the hub, not the bolts, carries the load.
Do all Buick Regal GS years share the same wheel fitment?
No. The bolt pattern or center bore changed between generations, so wheels are not interchangeable across all years. Use the year-by-year table on this page to pick the right specification.
Which forged wheels fit the Buick Regal GS?
Any wheel drilled 5x115 with a 70.3mm 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.