2005 GMC Safari Passenger 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 Passenger, 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 Passenger — Year-Specific Fitment Context
The 2005 model year is the final year of the GMC Safari Passenger's 6x139.7 bolt pattern run (since 2003). Wheels from any 2003–2005 GMC Safari Passenger are cross-compatible with the 2005 model. Across its full production run (1992–2005), the Safari Passenger has also used: 5x127.
GMC Safari Passenger Bolt Pattern by Year
The table below shows how the Safari Passenger'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 Passenger
For your 2005 GMC Safari Passenger, the 6x139.7 bolt pattern and 78.1mm center bore are critical. Aftermarket wheels often have a larger center bore (e.g., 78.3mm or 108mm); use hub-centric rings to prevent vibration and ensure proper load transfer. The offset is sensitive: stock is 30mm. Sticking within ±5mm avoids rubbing or clearance issues. Always match the 14x1.5 lug nut thread pitch; use conical (60-degree) or ball-seat nuts as specified by the wheel manufacturer. Improper seating can cause lug nuts to loosen. This is the final year for this bolt pattern; wheels from 2003–2005 Safari Passenger are direct fit.
Historical Fitment Data Reference
In our dataset, GMC Safari Passenger 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 maintain clamping force.
- ✅ Verify hub-centric ring inner diameter matches 78.1mm; outer diameter must match wheel bore.
- ✅ Check for caliper clearance with aftermarket wheels; some designs may require spacers.
- ⚠️ 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 Passenger — Frequently Asked Questions
What is the bolt pattern for a 2005 GMC Safari Passenger?
The 2005 GMC Safari Passenger 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 Passenger have the same bolt pattern as the 2005?
The GMC Safari Passenger 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 is the factory wheel offset for a 2005 GMC Safari Passenger?
The OEM offset for the 2005 Safari Passenger is typically around 30mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
How do I measure the bolt pattern on my 2005 GMC?
The 2005 Safari Passenger uses a 6x139.7 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.
What is the center bore of a 2005 GMC Safari Passenger?
The factory center bore (hub bore) for the 2005 GMC Safari Passenger is 78.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
What does 30mm offset mean for the 2005 Safari Passenger?
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.
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