2008 HUMMER H3 Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2008 HUMMER H3, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | N 12x1.50 |
| Center Bore (CB) | 100 mm |
| Offset (ET) | 20 |
| Torque Specs | 80 ft-lbs (108 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2008 H3 — Year-Specific Fitment Context
The 2008 HUMMER H3 is in year 3 of 5 using the 6x139.7 pattern (2006–2010). Wheels from any 2006–2010 HUMMER H3 are cross-compatible with the 2008 model.
HUMMER H3 Bolt Pattern by Year
The table below shows how the H3's wheel specifications have changed over the years. The 2008 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 2008 HUMMER H3
For your 2008 HUMMER H3, the 6x139.7 bolt pattern is shared with 2006–2010 models, ensuring cross-compatibility. Critical: the 100mm center bore requires hub-centric rings for aftermarket wheels to prevent vibration and stress on lugs. Offset is sensitive; stick to 20mm ±10mm to avoid rubbing or suspension interference. Safety warning: use only 12x1.50 lug nuts with correct seat type—factory is cone seat. Never mix seat types; improper seating can cause wheel loss. Always verify lug nut engagement (minimum 6 full turns).
Historical Fitment Data Reference
In our dataset, HUMMER H3 appears from 2006 to 2010 (5 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: 0.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50-100 miles of driving to maintain clamping force.
- ✅ Avoid wheels with center bore larger than 100mm without hub rings; vibration and lug failure risk.
- ✅ Check offset carefully: lower offset (e.g., 0mm) may rub fenders; higher offset (e.g., 30mm) may contact suspension components.
- ⚠️ Verify thread pitch before installation; M12x1.25 and M12x1.5 are not interchangeable.
- ⚠️ Torque lugs in a star pattern to 80 ft-lbs (108 Nm), then re-check torque after 50-100 km (30-60 miles).
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2008 HUMMER H3 — Frequently Asked Questions
What is the bolt pattern for a 2008 HUMMER H3?
The 2008 HUMMER H3 uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 100mm and the offset is 20mm.
What other years of HUMMER H3 have the same bolt pattern as the 2008?
The HUMMER H3 uses the 6x139.7 pattern from 2006 through 2010. Wheels from any of these model years are dimensionally compatible with the 2008, provided the offset and center bore also match.
What is the PCD for a 2008 HUMMER H3?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2008 H3, the PCD is 6x139.7.
How tight should I torque the lug nuts on a 2008 HUMMER H3?
Refer to your owner's manual for exact specs, but always tighten the N 12x1.50 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
What lug nut size does the 2008 HUMMER H3 use?
The 2008 HUMMER H3 uses N 12x1.50 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
What is the center bore of a 2008 HUMMER H3?
The factory center bore (hub bore) for the 2008 HUMMER H3 is 100mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
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