2007 GMC Sierra (Classic) 1500 Crew Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2007 GMC Sierra (Classic) 1500 Crew 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.
2007 Sierra (Classic) 1500 Crew Cab — Year-Specific Fitment Context
The 2007 is the only model year of the GMC Sierra (Classic) 1500 Crew Cab in our database using the 6x139.7 bolt pattern.
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 2007 GMC Sierra (Classic) 1500 Crew Cab
For your 2007 GMC Sierra (Classic) 1500 Crew Cab, the 6x139.7 bolt pattern is unique to this year. The 78.1mm center bore requires hub-centric rings for aftermarket wheels to prevent vibration and ensure load support. Offset must stay within 20-30mm; deviations risk rubbing or suspension interference. Always use 14x1.5 lug nuts with proper seat type (cone or ball) matching the wheel. Incorrect seating can cause loosening and wheel detachment. Verify wheel load rating meets or exceeds OEM specs for safety.
Historical Fitment Data Reference
In our dataset, GMC Sierra (Classic) 1500 Crew Cab appears from 2007 to 2007 (1 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 50-100 miles of driving to maintain clamping force.
- ✅ Aftermarket wheels often have larger center bores; always install hub-centric rings to avoid vibration.
- ✅ Check offset carefully: positive offset beyond 30mm may contact brake calipers or suspension components.
- ⚠️ 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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2007 GMC Sierra (Classic) 1500 Crew Cab — Frequently Asked Questions
What is the bolt pattern for a 2007 GMC Sierra (Classic) 1500 Crew Cab?
The 2007 GMC Sierra (Classic) 1500 Crew 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 is the center bore of a 2007 GMC Sierra (Classic) 1500 Crew Cab?
The factory center bore (hub bore) for the 2007 GMC Sierra (Classic) 1500 Crew Cab is 78.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
Can I put aftermarket wheels on my 2007 GMC Sierra (Classic) 1500 Crew Cab?
Absolutely. Just ensure the aftermarket wheels have a 6x139.7 bolt pattern, an offset near 20-30mm, and a center bore of at least 78.1mm (using hub rings if larger).
Can I use spacers on my 2007 GMC Sierra (Classic) 1500 Crew Cab?
Yes, but ensure the wheel spacers match the 6x139.7 bolt pattern and 78.1mm center bore. Also verify that you have enough thread engagement for your 14x1.5 hardware.
What is the factory wheel offset for a 2007 GMC Sierra (Classic) 1500 Crew Cab?
The OEM offset for the 2007 Sierra (Classic) 1500 Crew Cab is typically around 20-30mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
What is the PCD for a 2007 GMC Sierra (Classic) 1500 Crew Cab?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2007 Sierra (Classic) 1500 Crew Cab, the PCD is 6x139.7.
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