2004 Saturn Ion Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2004 Saturn Ion, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 4x100 |
|---|---|
| Lug Nut / Bolt Size | 12x1.5 |
| Center Bore (CB) | 56.6 mm |
| Offset (ET) | 42 |
| Torque Specs | 80 ft-lbs (108 Nm) |
2004 Ion — Year-Specific Fitment Context
The 2004 Saturn Ion is in year 2 of 5 using the 4x100 pattern (2003–2007). Wheels from any 2003–2007 Saturn Ion are cross-compatible with the 2004 model.
Saturn Ion Bolt Pattern by Year
The table below shows how the Ion's wheel specifications have changed over the years. The 2004 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 2004 Saturn Ion
For your 2004 Saturn Ion, the 4x100 bolt pattern is shared across 2003–2007 models, ensuring cross-compatibility. The 56.6mm center bore is critical: aftermarket wheels with a larger bore require hub-centric rings to prevent vibration and ensure proper load distribution. Offset is sensitive; the factory 42mm offset maintains suspension geometry and clearance. Deviating more than ±5mm may cause rubbing or bearing stress. Always use 12x1.5 lug nuts with the correct seat (conical 60-degree for most aftermarket wheels; factory uses a ball seat). Improper seating can lead to wheel loss. Verify lug nut engagement—at least 6 full turns—and re-torque after 50 miles.
Historical Fitment Data Reference
In our dataset, Saturn Ion appears from 2003 to 2007 (5 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 85 ft-lb after 50 miles of driving.
- ✅ If using aftermarket wheels, ensure hub-centric rings match the 56.6mm bore exactly.
- ✅ Avoid spacers unless hub-centric; they alter offset and may require longer studs.
- ⚠️ 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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2004 Saturn Ion — Frequently Asked Questions
What is the bolt pattern for a 2004 Saturn Ion?
The 2004 Saturn Ion 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 Saturn Ion have the same bolt pattern as the 2004?
The Saturn Ion uses the 4x100 pattern from 2003 through 2007. Wheels from any of these model years are dimensionally compatible with the 2004, provided the offset and center bore also match.
What is the factory wheel offset for a 2004 Saturn Ion?
The OEM offset for the 2004 Ion is typically around 42mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
What is the PCD for a 2004 Saturn Ion?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2004 Ion, the PCD is 4x100.
Can I use spacers on my 2004 Saturn Ion?
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 12x1.5 hardware.
What does 42mm offset mean for the 2004 Ion?
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 Saturn.
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