2005 GMC Safari Cargo Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2005 GMC Safari Cargo, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | 14x1.5 |
| Center Bore (CB) | 78.1 mm |
| Offset (ET) | 30 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2005 Safari Cargo — Year-Specific Fitment Context
The 2005 model year is the final year of the GMC Safari Cargo's 6x139.7 bolt pattern run (since 2003). Wheels from any 2003–2005 GMC Safari Cargo are cross-compatible with the 2005 model. Across its full production run (1992–2005), the Safari Cargo has also used: 5x127.
GMC Safari Cargo Bolt Pattern by Year
The table below shows how the Safari Cargo's wheel specifications have changed over the years. The 2005 model year is highlighted.
6x139.7 Pattern Context
This bolt pattern appears on 1067 vehicles in our current database and is considered common.
Examples of other vehicles using 6x139.7:
Expert Buying Guide for 2005 GMC Safari Cargo
For your 2005 GMC Safari Cargo, the 6x139.7 bolt pattern and 78.1mm center bore are critical. Aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibration and ensure proper load transfer. The offset is sensitive; stick to 30mm ±5mm to avoid rubbing or clearance issues. Always use 14x1.5 lug nuts with the correct seat—cone or ball seat—matching the wheel's design. Improper lug nuts can cause wheel loosening. Verify that aftermarket wheels are hub-centric or use rings, and check that the wheel's load rating meets or exceeds the vehicle's requirements.
Historical Fitment Data Reference
In our dataset, GMC Safari Cargo appears from 1992 to 2005 (14 model years). Across model years, this model appears with 2 bolt patterns (5x127, 6x139.7).
- Observed bolt-pattern variants for this model: 2
- Observed center-bore variants for this model: 1
- Observed lug-size variants for this model: 2
- Observed total offset span across years: 30.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50-100 miles of driving to ensure proper seating.
- ✅ Avoid using wheels from 1992-2002 Safari models (5x127 pattern) without adapters.
- ✅ Check wheel backspacing; 4.5-5 inches is typical for proper clearance on this model.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
- ⚠️ This model has multiple bolt-pattern records across years. Match wheels to exact year/trim before purchase.
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2005 GMC Safari Cargo — Frequently Asked Questions
What is the bolt pattern for a 2005 GMC Safari Cargo?
The 2005 GMC Safari Cargo uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 30mm.
What other years of GMC Safari Cargo have the same bolt pattern as the 2005?
The GMC Safari Cargo uses the 6x139.7 pattern from 2003 through 2005. Wheels from any of these model years are dimensionally compatible with the 2005, provided the offset and center bore also match.
What does 30mm offset mean for the 2005 Safari Cargo?
An offset of 30mm means the wheel's mounting surface is 30mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your GMC.
What lug nut size does the 2005 GMC Safari Cargo use?
The 2005 GMC Safari Cargo uses 14x1.5 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
What is the factory wheel offset for a 2005 GMC Safari Cargo?
The OEM offset for the 2005 Safari Cargo is typically around 30mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
What is the center bore of a 2005 GMC Safari Cargo?
The factory center bore (hub bore) for the 2005 GMC Safari Cargo is 78.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
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