1993 GMC Suburban 2500 Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 1993 GMC Suburban 2500, 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) | 0 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
1993 Suburban 2500 — Year-Specific Fitment Context
The 1993 GMC Suburban 2500 is in year 2 of 3 using the 6x139.7 pattern (1992–1994). Wheels from any 1992–1994 GMC Suburban 2500 are cross-compatible with the 1993 model. Across its full production run (1992–1999), the Suburban 2500 has also used: 8x165.1.
GMC Suburban 2500 Bolt Pattern by Year
The table below shows how the Suburban 2500's wheel specifications have changed over the years. The 1993 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 1993 GMC Suburban 2500
For your 1993 GMC Suburban 2500, the 6x139.7 bolt pattern and 78.1mm center bore are critical. Aftermarket wheels often have a larger center bore (e.g., 108mm), requiring hub-centric rings to prevent vibration and ensure load is on the hub, not the lugs. The 0mm offset is sensitive; deviations affect steering feel and tire clearance. Always use 14x1.5 lug nuts with the correct seat (cone or ball) matching the wheel. Improper seating can cause wheel loosening. Verify wheel load rating for this heavy-duty vehicle.
Historical Fitment Data Reference
In our dataset, GMC Suburban 2500 appears from 1992 to 1999 (8 model years). Across model years, this model appears with 2 bolt patterns (6x139.7, 8x165.1).
- Observed bolt-pattern variants for this model: 2
- Observed center-bore variants for this model: 2
- Observed lug-size variants for this model: 1
- Observed total offset span across years: 60.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50-100 miles of driving to maintain proper clamping force.
- ✅ Avoid using wheels from 1995-1999 Suburban 2500 (8x165.1 pattern) as they are incompatible.
- ✅ Check for caliper clearance when using aftermarket wheels; some designs may interfere with the brake caliper.
- ⚠️ 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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1993 GMC Suburban 2500 — Frequently Asked Questions
What is the bolt pattern for a 1993 GMC Suburban 2500?
The 1993 GMC Suburban 2500 uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 0mm.
What other years of GMC Suburban 2500 have the same bolt pattern as the 1993?
The GMC Suburban 2500 uses the 6x139.7 pattern from 1992 through 1994. Wheels from any of these model years are dimensionally compatible with the 1993, provided the offset and center bore also match.
Why is matching the 78.1mm center bore important for the 1993 Suburban 2500?
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 does 0mm offset mean for the 1993 Suburban 2500?
An offset of 0mm means the wheel's mounting surface is 0mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your GMC.
What is the PCD for a 1993 GMC Suburban 2500?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 1993 Suburban 2500, the PCD is 6x139.7.
Do 1993 GMC Suburban 2500s use lug bolts or lug nuts?
The 1993 Suburban 2500 requires 14x1.5 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
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