2015 Buick Regal Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2015 Buick Regal, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x120 |
|---|---|
| Lug Nut / Bolt Size | N 14x1.50 |
| Center Bore (CB) | 67.1 mm |
| Offset (ET) | 42 |
| Torque Specs | 100 ft-lbs (135 Nm) |
2015 Regal — Year-Specific Fitment Context
The 2015 Buick Regal is in year 5 of 7 using the 5x120 pattern (2011–2017). Wheels from any 2011–2017 Buick Regal are cross-compatible with the 2015 model. Across its full production run (1992–2017), the Regal has also used: 5x115.
Buick Regal Bolt Pattern by Year
The table below shows how the Regal's wheel specifications have changed over the years. The 2015 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1992 | 5x115 | 70.3 | 45 |
| 1993 | 5x115 | 70.3 | 45 |
| 1994 | 5x115 | 70.3 | 45 |
| 1995 | 5x115 | 70.3 | 45 |
| 1996 | 5x115 | 70.3 | 45 |
| 1997 | 5x115 | 70.3 | 45 |
| 1998 | 5x115 | 70.3 | 45 |
| 1999 | 5x115 | 70.3 | 45 |
| 2000 | 5x115 | 70.3 | 45 |
| 2001 | 5x115 | 70.3 | 45 |
| 2002 | 5x115 | 70.3 | 45 |
| 2003 | 5x115 | 70.3 | 45 |
| 2004 | 5x115 | 70.3 | 45 |
| 2011 | 5x120 | 67.1 | 42 |
| 2012 | 5x120 | 67.1 | 42 |
| 2013 | 5x120 | 67.1 | 42 |
| 2014 | 5x120 | 67.1 | 42 |
| ▸ 2015 | 5x120 | 67.1 | 42 |
| 2016 | 5x120 | 67.1 | 42 |
| 2017 | 5x120 | 67.1 | 42 |
5x120 Pattern Context
This bolt pattern appears on 633 vehicles in our current database and is considered common.
Examples of other vehicles using 5x120:
Expert Buying Guide for 2015 Buick Regal
For your 2015 Buick Regal, the 67.1mm center bore is critical. Aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibration and ensure proper load transfer. The 42mm offset is sensitive; deviations beyond ±5mm may cause rubbing or clearance issues. Always verify lug nut thread pitch (14x1.50) and seat type—use conical (60-degree) or ball seat lugs as specified. Never mix seat types. Re-torque after 50-100 miles. Wheels from 2011-2017 Regal are direct fit; avoid 5x115 patterns from earlier models.
Historical Fitment Data Reference
In our dataset, Buick Regal appears from 1992 to 2017 (20 model years). Across model years, this model appears with 2 bolt patterns (5x115, 5x120).
- Observed bolt-pattern variants for this model: 2
- Observed center-bore variants for this model: 2
- Observed lug-size variants for this model: 2
- Observed total offset span across years: 3.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 100 ft-lbs after 50-100 miles of driving.
- ✅ Aftermarket wheels with larger bores require hub-centric rings; plastic rings are acceptable for street use.
- ✅ Verify offset using a test fit; 42mm is optimal, but 38-45mm may work with proper tire sizing.
- ⚠️ Confirm bolt pattern carefully. 5x120 is often confused with other common 5-lug patterns.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
- ⚠️ This model has multiple bolt-pattern records across years. Match wheels to exact year/trim before purchase.
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2015 Buick Regal — Frequently Asked Questions
What is the bolt pattern for a 2015 Buick Regal?
The 2015 Buick Regal uses a 5x120 bolt pattern (also called lug pattern or PCD). The center bore is 67.1mm and the offset is 42mm.
What other years of Buick Regal have the same bolt pattern as the 2015?
The Buick Regal uses the 5x120 pattern from 2011 through 2017. Wheels from any of these model years are dimensionally compatible with the 2015, provided the offset and center bore also match.
How tight should I torque the lug nuts on a 2015 Buick Regal?
Refer to your owner's manual for exact specs, but always tighten the N 14x1.50 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
Can I use spacers on my 2015 Buick Regal?
Yes, but ensure the wheel spacers match the 5x120 bolt pattern and 67.1mm center bore. Also verify that you have enough thread engagement for your N 14x1.50 hardware.
How do I measure the bolt pattern on my 2015 Buick?
The 2015 Regal uses a 5x120 pattern. For 4, 6, or 8-lug wheels, measure center-to-center across opposite holes. For 5-lug, measure from the center of one hole to the back of the opposite hole.
What lug nut size does the 2015 Buick Regal use?
The 2015 Buick Regal uses N 14x1.50 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
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