2009 Pontiac G5 Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2009 Pontiac G5, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 4x100 |
|---|---|
| Lug Nut / Bolt Size | N 12x1.50 |
| Center Bore (CB) | 56.6 mm |
| Offset (ET) | 42 |
| Torque Specs | 80 ft-lbs (108 Nm) |
2009 G5 — Year-Specific Fitment Context
The 2009 model year is the final year of the Pontiac G5's 4x100 bolt pattern run (since 2007). Wheels from any 2007–2009 Pontiac G5 are cross-compatible with the 2009 model.
Pontiac G5 Bolt Pattern by Year
The table below shows how the G5's wheel specifications have changed over the years. The 2009 model year is highlighted.
4x100 Pattern Context
This bolt pattern appears on 461 vehicles in our current database and is considered moderately common.
Examples of other vehicles using 4x100:
Expert Buying Guide for 2009 Pontiac G5
For your 2009 Pontiac G5, the 4x100 bolt pattern and 56.6mm 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 stock offset is 42mm; deviations beyond ±5mm may cause rubbing or clearance issues. Always verify lug nut compatibility: the G5 uses M12x1.50 threads with a conical (60-degree) seat. Using incorrect lug nuts (e.g., ball seat) can lead to wheel loosening. Re-torque after 50-100 miles of driving.
Historical Fitment Data Reference
In our dataset, Pontiac G5 appears from 2007 to 2009 (3 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
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 100 ft-lbs after 50-100 miles of driving.
- ✅ If using aftermarket wheels, ensure hub-centric rings are installed to match the 56.6mm center bore.
- ✅ Avoid wheels with offset below 37mm or above 47mm to prevent rubbing on struts or fenders.
- ⚠️ 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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2009 Pontiac G5 — Frequently Asked Questions
What is the bolt pattern for a 2009 Pontiac G5?
The 2009 Pontiac G5 uses a 4x100 bolt pattern (also called lug pattern or PCD). The center bore is 56.6mm and the offset is 42mm.
What other years of Pontiac G5 have the same bolt pattern as the 2009?
The Pontiac G5 uses the 4x100 pattern from 2007 through 2009. Wheels from any of these model years are dimensionally compatible with the 2009, provided the offset and center bore also match.
Can I use spacers on my 2009 Pontiac G5?
Yes, but ensure the wheel spacers match the 4x100 bolt pattern and 56.6mm center bore. Also verify that you have enough thread engagement for your N 12x1.50 hardware.
How do I measure the bolt pattern on my 2009 Pontiac?
The 2009 G5 uses a 4x100 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.
How tight should I torque the lug nuts on a 2009 Pontiac G5?
Refer to your owner's manual for exact specs, but always tighten the N 12x1.50 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
What is the PCD for a 2009 Pontiac G5?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2009 G5, the PCD is 4x100.
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