1993 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 1993 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.
1993 Suburban 1500 — Year-Specific Fitment Context
The 1993 GMC Suburban 1500 is in year 2 of 8 using the 6x139.7 pattern (1992–1999). Wheels from any 1992–1999 GMC Suburban 1500 are cross-compatible with the 1993 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 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 1500
For your 1993 GMC Suburban 1500, the 6x139.7 bolt pattern is shared with 1992–1999 models, ensuring cross-compatibility. Critical is the 78.1mm center bore: aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibration and ensure load is on the hub, not the lugs. Offset must stay within 20-30mm; deviations risk rubbing on suspension or fenders. Safety: use 14x1.5 lug nuts with the correct seat (cone or ball) matching the wheel. Improper thread pitch or seat can cause wheel loss. Always torque to spec and re-torque after 50-100 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 to 140 ft-lbs after 50-100 miles of driving.
- ✅ Avoid wheels with offset below 20mm (rubs suspension) or above 30mm (rubs fenders).
- ✅ If using aftermarket wheels, verify hub-centric ring inner diameter matches 78.1mm exactly.
- ⚠️ 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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1993 GMC Suburban 1500 — Frequently Asked Questions
What is the bolt pattern for a 1993 GMC Suburban 1500?
The 1993 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 1993?
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 1993, provided the offset and center bore also match.
What is the center bore of a 1993 GMC Suburban 1500?
The factory center bore (hub bore) for the 1993 GMC Suburban 1500 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 1993 GMC Suburban 1500?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 1993 Suburban 1500, the PCD is 6x139.7.
What is the factory wheel offset for a 1993 GMC Suburban 1500?
The OEM offset for the 1993 Suburban 1500 is typically around 20-30mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
What does 20-30mm offset mean for the 1993 Suburban 1500?
An offset of 20-30mm means the wheel's mounting surface is 20-30mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your GMC.
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