1996 GMC Suburban 1500 Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 1996 GMC Suburban 1500, 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) | 20-30 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
1996 Suburban 1500 — Year-Specific Fitment Context
The 1996 GMC Suburban 1500 is in year 5 of 8 using the 6x139.7 pattern (1992–1999). Wheels from any 1992–1999 GMC Suburban 1500 are cross-compatible with the 1996 model.
GMC Suburban 1500 Bolt Pattern by Year
The table below shows how the Suburban 1500's wheel specifications have changed over the years. The 1996 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 1996 GMC Suburban 1500
For your 1996 GMC Suburban 1500, the 6x139.7 bolt pattern is shared with 1992–1999 models, ensuring cross-compatibility. However, the 78.1mm center bore is critical: aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibration and ensure proper load transfer. Offset must stay within 20–30mm; deviations risk rubbing on suspension or bodywork. Always use 14x1.5 lug nuts with the correct seat type—factory wheels use a conical (60-degree) seat, while aftermarket may require ball or shank-style nuts. Never mix seat types; improper engagement can cause wheel loss. Verify lug nut torque to manufacturer specs (typically 140 ft-lbs) and re-torque after 50 miles.
Historical Fitment Data Reference
In our dataset, GMC Suburban 1500 appears from 1992 to 1999 (8 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: 50.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50 miles of driving to account for settling.
- ✅ Avoid using universal fit wheels without verifying center bore; hub-centric rings are mandatory for safe fitment.
- ✅ Check for caliper clearance when selecting wheels; some aftermarket designs may interfere with the brake calipers on this model.
- ⚠️ This fitment uses a wide offset range. Check brake clearance and fender clearance before buying wheels.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
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1996 GMC Suburban 1500 — Frequently Asked Questions
What is the bolt pattern for a 1996 GMC Suburban 1500?
The 1996 GMC Suburban 1500 uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 20-30mm.
What other years of GMC Suburban 1500 have the same bolt pattern as the 1996?
The GMC Suburban 1500 uses the 6x139.7 pattern from 1992 through 1999. Wheels from any of these model years are dimensionally compatible with the 1996, provided the offset and center bore also match.
Do 1996 GMC Suburban 1500s use lug bolts or lug nuts?
The 1996 Suburban 1500 requires 14x1.5 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
How do I measure the bolt pattern on my 1996 GMC?
The 1996 Suburban 1500 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.
Why is matching the 78.1mm center bore important for the 1996 Suburban 1500?
The 78.1mm center bore ensures the wheel is perfectly centered on the hub. If the wheel is lug-centric instead of hub-centric, you may experience steering wheel vibration at highway speeds.
What is the center bore of a 1996 GMC Suburban 1500?
The factory center bore (hub bore) for the 1996 GMC Suburban 1500 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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