2005 Cadillac STS Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2005 Cadillac STS, 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) | 42 |
| Torque Specs | 80 ft-lbs (108 Nm) |
2005 STS — Year-Specific Fitment Context
The 2005 model year marks the beginning of the Cadillac STS's 5x115 bolt pattern era, which continued through 2011 (7 consecutive years). Wheels from any 2005–2011 Cadillac STS are cross-compatible with the 2005 model.
Cadillac STS Bolt Pattern by Year
The table below shows how the STS's wheel specifications have changed over the years. The 2005 model year is highlighted.
Fitment Notes
The 2005 Cadillac STS 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, Cadillac STS appears from 2005 to 2011 (7 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: 2
- Observed lug-size variants for this model: 2
- 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 Cadillac STS — Frequently Asked Questions
What is the bolt pattern for a 2005 Cadillac STS?
The 2005 Cadillac STS uses a 5x115 bolt pattern (also called lug pattern or PCD). The center bore is 70.3mm and the offset is 42mm.
What other years of Cadillac STS have the same bolt pattern as the 2005?
The Cadillac STS uses the 5x115 pattern from 2005 through 2011. Wheels from any of these model years are dimensionally compatible with the 2005, provided the offset and center bore also match.
Can I use spacers on my 2005 Cadillac STS?
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.
Do 2005 Cadillac STSs use lug bolts or lug nuts?
The 2005 STS requires N 12x1.50 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
What is the factory wheel offset for a 2005 Cadillac STS?
The OEM offset for the 2005 STS is typically around 42mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
What does 42mm offset mean for the 2005 STS?
An offset of 42mm means the wheel's mounting surface is 42mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your Cadillac.
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
Cadillac STS 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: 2005-2011 (7 model years).
- Observed bolt-pattern variants: 1 (5x115).
- Observed total offset span across years: 0.0 mm.
- Observed center-bore variants: 2 | lug-size variants: 2.
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 Cadillac STS, please report it via our About page contact so we can verify and update this record.