1998 Oldsmobile Silhouette Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 1998 Oldsmobile Silhouette, 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) |
1998 Silhouette — Year-Specific Fitment Context
The 1998 Oldsmobile Silhouette is in year 7 of 13 using the 5x115 pattern (1992–2004). Wheels from any 1992–2004 Oldsmobile Silhouette are cross-compatible with the 1998 model.
Oldsmobile Silhouette Bolt Pattern by Year
The table below shows how the Silhouette's wheel specifications have changed over the years. The 1998 model year is highlighted.
Fitment Notes
The 1998 Oldsmobile Silhouette 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, Oldsmobile Silhouette appears from 1992 to 2004 (13 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: 5.0 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:
1998 Oldsmobile Silhouette — Frequently Asked Questions
What is the bolt pattern for a 1998 Oldsmobile Silhouette?
The 1998 Oldsmobile Silhouette 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 Oldsmobile Silhouette have the same bolt pattern as the 1998?
The Oldsmobile Silhouette uses the 5x115 pattern from 1992 through 2004. Wheels from any of these model years are dimensionally compatible with the 1998, provided the offset and center bore also match.
Can I put aftermarket wheels on my 1998 Oldsmobile Silhouette?
Absolutely. Just ensure the aftermarket wheels have a 5x115 bolt pattern, an offset near 45mm, and a center bore of at least 70.3mm (using hub rings if larger).
Can I use spacers on my 1998 Oldsmobile Silhouette?
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 is the PCD for a 1998 Oldsmobile Silhouette?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 1998 Silhouette, the PCD is 5x115.
How do I measure the bolt pattern on my 1998 Oldsmobile?
The 1998 Silhouette uses a 5x115 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.
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
Oldsmobile Silhouette 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: 1992-2004 (13 model years).
- Observed bolt-pattern variants: 1 (5x115).
- Observed total offset span across years: 5.0 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 1998 Oldsmobile Silhouette, please report it via our About page contact so we can verify and update this record.