2004 GMC Sierra 2500 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 2004 GMC Sierra 2500 Regular Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 8x165.1 (8x6.5") |
|---|---|
| Lug Nut / Bolt Size | 14x1.5 |
| Center Bore (CB) | 116.7 mm |
| Offset (ET) | 20-40 |
| Torque Specs | 140 ft-lbs (190 Nm) |
2004 Sierra 2500 Regular Cab — Year-Specific Fitment Context
The 2004 model year is the final year of the GMC Sierra 2500 Regular Cab's 8x165.1 bolt pattern run (since 1999). Wheels from any 1999–2004 GMC Sierra 2500 Regular Cab are cross-compatible with the 2004 model.
GMC Sierra 2500 Regular Cab Bolt Pattern by Year
The table below shows how the Sierra 2500 Regular Cab's wheel specifications have changed over the years. The 2004 model year is highlighted.
Fitment Notes
The 2004 GMC Sierra 2500 Regular Cab has a bolt pattern of 8x165.1.
Imperial Conversion: This bolt pattern is commonly referred to as 8x6.5" in imperial units. When searching for aftermarket wheels, you may see them listed as 8x6.5".
This means it is a 8 lug pattern with a circle diameter of 165.1mm. When shopping for aftermarket wheels, ensure the "lug pattern" or "PCD" matches these numbers.
Year-to-Year Fitment Context
In our dataset, GMC Sierra 2500 Regular Cab appears from 1999 to 2004 (6 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: 60.0 mm
8x165.1 Pattern Context
This bolt pattern appears on 846 vehicles in our current database and is considered common.
Examples of other vehicles using 8x165.1:
2004 GMC Sierra 2500 Regular Cab — Frequently Asked Questions
What is the bolt pattern for a 2004 GMC Sierra 2500 Regular Cab?
The 2004 GMC Sierra 2500 Regular Cab uses a 8x165.1 bolt pattern (also called lug pattern or PCD). The center bore is 116.7mm and the offset is 20-40mm.
What other years of GMC Sierra 2500 Regular Cab have the same bolt pattern as the 2004?
The GMC Sierra 2500 Regular Cab uses the 8x165.1 pattern from 1999 through 2004. Wheels from any of these model years are dimensionally compatible with the 2004, provided the offset and center bore also match.
How tight should I torque the lug nuts on a 2004 GMC Sierra 2500 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.
What is the center bore of a 2004 GMC Sierra 2500 Regular Cab?
The factory center bore (hub bore) for the 2004 GMC Sierra 2500 Regular Cab is 116.7mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
Do 2004 GMC Sierra 2500 Regular Cabs use lug bolts or lug nuts?
The 2004 Sierra 2500 Regular Cab requires 14x1.5 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
What is the PCD for a 2004 GMC Sierra 2500 Regular Cab?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2004 Sierra 2500 Regular Cab, the PCD is 8x165.1.
Fitment Checklist Before You Buy Wheels
- This fitment uses a wide offset range. Check brake clearance and fender clearance before buying wheels.
- Torque lugs in a star pattern to 140 ft-lbs (190 Nm), then re-check torque after 50-100 km (30-60 miles).
Editorial Fitment Notes
GMC Sierra 2500 Regular Cab is generally consistent in bolt-pattern records across model years, but offset and hardware should still be validated before purchase.
- Observed production years in our database: 1999-2004 (6 model years).
- Observed bolt-pattern variants: 1 (8x165.1).
- Observed total offset span across years: 60.0 mm.
- Observed center-bore variants: 1 | lug-size variants: 1.
Data Quality & Review
Source note: Compiled from manufacturer fitment references, historical wheel data, and internal normalization rules.
Last reviewed: 2026-05-26 | Reviewed by: Bolt Pattern HQ Editorial Team
If you find a discrepancy for 2004 GMC Sierra 2500 Regular Cab, please report it via our About page contact so we can verify and update this record.