2005 Pontiac Montana SV6 Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2005 Pontiac Montana SV6, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x115 |
|---|---|
| Lug Nut / Bolt Size | N 12x1.50 |
| Center Bore (CB) | 70.3 mm |
| Offset (ET) | 45 |
| Torque Specs | 80 ft-lbs (108 Nm) |
2005 Montana SV6 — Year-Specific Fitment Context
The 2005 model year marks the beginning of the Pontiac Montana SV6's 5x115 bolt pattern era, which continued through 2006 (2 consecutive years). Wheels from any 2005–2006 Pontiac Montana SV6 are cross-compatible with the 2005 model.
Pontiac Montana SV6 Bolt Pattern by Year
The table below shows how the Montana SV6's wheel specifications have changed over the years. The 2005 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| ▸ 2005 | 5x115 | 70.3 | 45 |
| 2006 | 5x115 | 70.3 | 45 |
Fitment Notes
The 2005 Pontiac Montana SV6 has a bolt pattern of 5x115.
This means it is a 5 lug pattern with a circle diameter of 115mm. When shopping for aftermarket wheels, ensure the "lug pattern" or "PCD" matches these numbers.
Year-to-Year Fitment Context
In our dataset, Pontiac Montana SV6 appears from 2005 to 2006 (2 model years).
Across recorded model years, this model generally keeps the same bolt pattern.
- Observed bolt-pattern variants for this model: 1
- Observed center-bore variants for this model: 1
- Observed lug-size variants for this model: 1
- Observed total offset span across years: 0.0 mm
5x115 Pattern Context
This bolt pattern appears on 498 vehicles in our current database and is considered moderately common.
Examples of other vehicles using 5x115:
2005 Pontiac Montana SV6 — Frequently Asked Questions
What is the bolt pattern for a 2005 Pontiac Montana SV6?
The 2005 Pontiac Montana SV6 uses a 5x115 bolt pattern (also called lug pattern or PCD). The center bore is 70.3mm and the offset is 45mm.
What other years of Pontiac Montana SV6 have the same bolt pattern as the 2005?
The Pontiac Montana SV6 uses the 5x115 pattern from 2005 through 2006. Wheels from any of these model years are dimensionally compatible with the 2005, provided the offset and center bore also match.
What does 45mm offset mean for the 2005 Montana SV6?
An offset of 45mm means the wheel's mounting surface is 45mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your Pontiac.
Can I use spacers on my 2005 Pontiac Montana SV6?
Yes, but ensure the wheel spacers match the 5x115 bolt pattern and 70.3mm center bore. Also verify that you have enough thread engagement for your N 12x1.50 hardware.
What lug nut size does the 2005 Pontiac Montana SV6 use?
The 2005 Pontiac Montana SV6 uses N 12x1.50 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
What is the PCD for a 2005 Pontiac Montana SV6?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2005 Montana SV6, the PCD is 5x115.
Fitment Checklist Before You Buy Wheels
- Verify thread pitch before installation; M12x1.25 and M12x1.5 are not interchangeable.
- Torque lugs in a star pattern to 80 ft-lbs (108 Nm), then re-check torque after 50-100 km (30-60 miles).
Editorial Fitment Notes
Pontiac Montana SV6 is generally consistent in bolt-pattern records across model years, but offset and hardware should still be validated before purchase.
- Observed production years in our database: 2005-2006 (2 model years).
- Observed bolt-pattern variants: 1 (5x115).
- Observed total offset span across years: 0.0 mm.
- Observed center-bore variants: 1 | lug-size variants: 1.
Data Quality & Review
Source note: Compiled from manufacturer fitment references, historical wheel data, and internal normalization rules.
Last reviewed: 2026-05-26 | Reviewed by: Bolt Pattern HQ Editorial Team
If you find a discrepancy for 2005 Pontiac Montana SV6, please report it via our About page contact so we can verify and update this record.