2009 Chevrolet Avalanche Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2009 Chevrolet Avalanche, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | N 14x1.50 |
| Center Bore (CB) | 78.1 mm |
| Offset (ET) | 31 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2009 Avalanche — Year-Specific Fitment Context
The 2009 Chevrolet Avalanche is in year 3 of 7 using the 6x139.7 pattern (2007–2013). Wheels from any 2007–2013 Chevrolet Avalanche are cross-compatible with the 2009 model.
Chevrolet Avalanche Bolt Pattern by Year
The table below shows how the Avalanche's wheel specifications have changed over the years. The 2009 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 2009 Chevrolet Avalanche
The 2009 Chevrolet Avalanche uses a 6x139.7 bolt pattern with a 78.1mm center bore. When selecting aftermarket wheels, ensure hub-centric rings are used to match the bore precisely, preventing vibrations. The factory offset is 31mm; deviations beyond ±5mm may cause rubbing or clearance issues. Always verify lug nut thread pitch (14x1.50) and seat type (conical/ball) to avoid wheel loosening. Use only compatible lug nuts with proper seating to maintain safety.
Historical Fitment Data Reference
In our dataset, Chevrolet Avalanche appears from 2007 to 2013 (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: 0.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50-100 miles of driving to ensure proper seating.
- ✅ Avoid using wheels with a center bore larger than 78.1mm without hub-centric rings.
- ✅ Check for brake caliper clearance when using wheels with offset less than 26mm or more than 36mm.
- ⚠️ 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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2009 Chevrolet Avalanche — Frequently Asked Questions
What is the bolt pattern for a 2009 Chevrolet Avalanche?
The 2009 Chevrolet Avalanche uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 31mm.
What other years of Chevrolet Avalanche have the same bolt pattern as the 2009?
The Chevrolet Avalanche uses the 6x139.7 pattern from 2007 through 2013. Wheels from any of these model years are dimensionally compatible with the 2009, provided the offset and center bore also match.
How tight should I torque the lug nuts on a 2009 Chevrolet Avalanche?
Refer to your owner's manual for exact specs, but always tighten the N 14x1.50 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
What is the factory wheel offset for a 2009 Chevrolet Avalanche?
The OEM offset for the 2009 Avalanche is typically around 31mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
Why is matching the 78.1mm center bore important for the 2009 Avalanche?
The 78.1mm center bore ensures the wheel is perfectly centered on the hub. If the wheel is lug-centric instead of hub-centric, you may experience steering wheel vibration at highway speeds.
Can I use spacers on my 2009 Chevrolet Avalanche?
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 N 14x1.50 hardware.
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