1992 GMC 1500 Regular Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 1992 GMC 1500 Regular Cab, 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.
1992 1500 Regular Cab — Year-Specific Fitment Context
The 1992 model year marks the beginning of the GMC 1500 Regular Cab's 6x139.7 bolt pattern era, which continued through 1998 (7 consecutive years). Wheels from any 1992–1998 GMC 1500 Regular Cab are cross-compatible with the 1992 model.
GMC 1500 Regular Cab Bolt Pattern by Year
The table below shows how the 1500 Regular Cab's wheel specifications have changed over the years. The 1992 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 1992 GMC 1500 Regular Cab
For your 1992 GMC 1500 Regular Cab, the 6x139.7 bolt pattern is shared with 1992–1998 models, ensuring cross-compatibility. The 78.1mm center bore is critical: aftermarket wheels with larger bores require hub-centric rings to prevent vibration and ensure proper load distribution. Offset must stay within 20–30mm; deviations risk rubbing on suspension or bodywork. Always use 14x1.5 lug nuts with the correct seat type—cone seat for most aftermarket wheels, ball seat for factory GM wheels. Incorrect seating can cause wheel loosening. Re-torque after 50–100 miles and periodically thereafter.
Historical Fitment Data Reference
In our dataset, GMC 1500 Regular Cab appears from 1992 to 1998 (7 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-lb after 50–100 miles, then check every tire rotation.
- ✅ 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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1992 GMC 1500 Regular Cab — Frequently Asked Questions
What is the bolt pattern for a 1992 GMC 1500 Regular Cab?
The 1992 GMC 1500 Regular Cab 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 1500 Regular Cab have the same bolt pattern as the 1992?
The GMC 1500 Regular Cab uses the 6x139.7 pattern from 1992 through 1998. Wheels from any of these model years are dimensionally compatible with the 1992, provided the offset and center bore also match.
What is the PCD for a 1992 GMC 1500 Regular Cab?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 1992 1500 Regular Cab, the PCD is 6x139.7.
Do 1992 GMC 1500 Regular Cabs use lug bolts or lug nuts?
The 1992 1500 Regular Cab requires 14x1.5 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
What is the center bore of a 1992 GMC 1500 Regular Cab?
The factory center bore (hub bore) for the 1992 GMC 1500 Regular Cab is 78.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
How tight should I torque the lug nuts on a 1992 GMC 1500 Regular Cab?
Refer to your owner's manual for exact specs, but always tighten the 14x1.5 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
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