1997 Pontiac Bonneville Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 1997 Pontiac Bonneville, 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) |
1997 Bonneville — Year-Specific Fitment Context
The 1997 Pontiac Bonneville is in year 6 of 14 using the 5x115 pattern (1992–2005). Wheels from any 1992–2005 Pontiac Bonneville are cross-compatible with the 1997 model.
Pontiac Bonneville Bolt Pattern by Year
The table below shows how the Bonneville's wheel specifications have changed over the years. The 1997 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 | 52 |
| 2000 | 5x115 | 70.3 | 52 |
| 2001 | 5x115 | 70.3 | 52 |
| 2002 | 5x115 | 70.3 | 52 |
| 2003 | 5x115 | 70.3 | 52 |
| 2004 | 5x115 | 70.3 | 52 |
| 2005 | 5x115 | 70.3 | 52 |
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:
Expert Buying Guide for 1997 Pontiac Bonneville
For your 1997 Pontiac Bonneville, the 5x115 bolt pattern and 70.3mm center bore are critical. Aftermarket wheels often have a larger center bore (e.g., 73.1mm), requiring hub-centric rings to prevent vibration and ensure proper load transfer. The factory offset is 45mm; deviations beyond ±5mm may cause rubbing or clearance issues. Always use lug nuts with the correct thread pitch (12x1.5) and seat type—factory wheels use a conical (60-degree) seat, while some aftermarket wheels require ball or flat seats. Mismatched lug nuts can lead to wheel loosening. Re-torque after 50-100 miles of driving.
Historical Fitment Data Reference
In our dataset, Pontiac Bonneville appears from 1992 to 2005 (14 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: 7.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 100 ft-lb after 50-100 miles, then periodically check.
- ✅ If using aftermarket wheels, verify hub bore and use hub-centric rings (70.3mm ID to wheel bore OD).
- ✅ Avoid wheels with offset below 40mm or above 50mm to prevent strut or fender contact.
- ⚠️ 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).
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1997 Pontiac Bonneville — Frequently Asked Questions
What is the bolt pattern for a 1997 Pontiac Bonneville?
The 1997 Pontiac Bonneville 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 Bonneville have the same bolt pattern as the 1997?
The Pontiac Bonneville uses the 5x115 pattern from 1992 through 2005. Wheels from any of these model years are dimensionally compatible with the 1997, provided the offset and center bore also match.
What is the PCD for a 1997 Pontiac Bonneville?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 1997 Bonneville, the PCD is 5x115.
Why is matching the 70.3mm center bore important for the 1997 Bonneville?
The 70.3mm center bore ensures the wheel is perfectly centered on the hub. If the wheel is lug-centric instead of hub-centric, you may experience steering wheel vibration at highway speeds.
Will wheels from another Pontiac fit my 1997 Bonneville?
Only if they share the exact same 5x115 bolt pattern, a compatible offset, and a center bore equal to or larger than 70.3mm.
What lug nut size does the 1997 Pontiac Bonneville use?
The 1997 Pontiac Bonneville uses N 12x1.50 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
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