1998 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 1998 GMC Safari Cargo, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x127 (5x5") |
|---|---|
| Lug Nut / Bolt Size | 1/2 20 |
| Center Bore (CB) | 78.1 mm |
| Offset (ET) | 0 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 5x127 is commonly referred to as 5x5" in US Standard.
1998 Safari Cargo — Year-Specific Fitment Context
The 1998 GMC Safari Cargo is in year 7 of 11 using the 5x127 pattern (1992–2002). Wheels from any 1992–2002 GMC Safari Cargo are cross-compatible with the 1998 model. Across its full production run (1992–2005), the Safari Cargo has also used: 6x139.7.
GMC Safari Cargo Bolt Pattern by Year
The table below shows how the Safari Cargo's wheel specifications have changed over the years. The 1998 model year is highlighted.
5x127 Pattern Context
This bolt pattern appears on 236 vehicles in our current database and is considered moderately common.
Examples of other vehicles using 5x127:
Expert Buying Guide for 1998 GMC Safari Cargo
The 1998 GMC Safari Cargo uses a 5x127 bolt pattern with a 78.1mm center bore. For aftermarket wheels, hub-centric rings are essential to prevent vibration and ensure proper load distribution. The offset is sensitive; stick to 0mm offset to avoid clearance issues with suspension and body components. Always use lug nuts with the correct thread pitch (1/2-20) and seat type (conical/60-degree) to guarantee safe clamping force. Mismatched lug nuts can cause wheel loosening or stud failure. Verify that wheels are hub-centric or use rings, and never rely solely on lug nuts for centering.
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 account for settling.
- ✅ Avoid wheels with a center bore larger than 78.1mm without proper hub-centric rings to prevent vibrations.
- ✅ Check for brake caliper clearance when using wheels with different offsets, as the 0mm offset is critical for 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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1998 GMC Safari Cargo — Frequently Asked Questions
What is the bolt pattern for a 1998 GMC Safari Cargo?
The 1998 GMC Safari Cargo uses a 5x127 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 0mm.
What other years of GMC Safari Cargo have the same bolt pattern as the 1998?
The GMC Safari Cargo uses the 5x127 pattern from 1992 through 2002. Wheels from any of these model years are dimensionally compatible with the 1998, provided the offset and center bore also match.
What is the center bore of a 1998 GMC Safari Cargo?
The factory center bore (hub bore) for the 1998 GMC Safari Cargo is 78.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
What is the PCD for a 1998 GMC Safari Cargo?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 1998 Safari Cargo, the PCD is 5x127.
What is the factory wheel offset for a 1998 GMC Safari Cargo?
The OEM offset for the 1998 Safari Cargo is typically around 0mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
Can I use spacers on my 1998 GMC Safari Cargo?
Yes, but ensure the wheel spacers match the 5x127 bolt pattern and 78.1mm center bore. Also verify that you have enough thread engagement for your 1/2 20 hardware.
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