2008 Chevrolet Silverado 2500 HD Extended Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2008 Chevrolet Silverado 2500 HD Extended Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 8x165.1 (8x6.5") |
|---|---|
| Lug Nut / Bolt Size | N 14x1.50 |
| Center Bore (CB) | 116.6 mm |
| Offset (ET) | 26 |
| Torque Specs | 140 ft-lbs (190 Nm) |
Imperial Match: 8x165.1 is commonly referred to as 8x6.5" in US Standard.
2008 Silverado 2500 HD Extended Cab — Year-Specific Fitment Context
The 2008 Chevrolet Silverado 2500 HD Extended Cab is in year 10 of 13 using the 8x165.1 pattern (1999–2011). Wheels from any 1999–2011 Chevrolet Silverado 2500 HD Extended Cab are cross-compatible with the 2008 model. Across its full production run (1999–2013), the Silverado 2500 HD Extended Cab has also used: 8x180.
Chevrolet Silverado 2500 HD Extended Cab Bolt Pattern by Year
The table below shows how the Silverado 2500 HD Extended Cab's wheel specifications have changed over the years. The 2008 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1999 | 8x165.1 | 116.6 | 26 |
| 2000 | 8x165.1 | 116.6 | 26 |
| 2001 | 8x165.1 | 116.6 | 26 |
| 2002 | 8x165.1 | 116.6 | 26 |
| 2003 | 8x165.1 | 116.6 | 26 |
| 2004 | 8x165.1 | 116.6 | 26 |
| 2005 | 8x165.1 | 116.6 | 26 |
| 2006 | 8x165.1 | 116.6 | 26 |
| 2007 | 8x165.1 | 116.6 | 26 |
| ▸ 2008 | 8x165.1 | 116.6 | 26 |
| 2009 | 8x165.1 | 116.6 | 26 |
| 2010 | 8x165.1 | 116.6 | 26 |
| 2011 | 8x165.1 | 116.6 | 26 |
| 2012 | 8x180 | 124.1 | 42 |
| 2013 | 8x180 | 124.1 | 42 |
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:
Expert Buying Guide for 2008 Chevrolet Silverado 2500 HD Extended Cab
For your 2008 Chevrolet Silverado 2500 HD Extended Cab, the 8x165.1 bolt pattern is shared with 1999–2011 models. The center bore is 116.6mm; aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibration and ensure proper load distribution. Offset is critical: stock is 26mm; deviations affect scrub radius and clearance. Use only lug nuts with 14x1.50 thread pitch and correct seat type (cone or ball) matching the wheel. Improper seating can cause wheel loss. Always verify wheel specs against your vehicle's hub and suspension.
Historical Fitment Data Reference
In our dataset, Chevrolet Silverado 2500 HD Extended Cab appears from 1999 to 2013 (15 model years). Across model years, this model appears with 2 bolt patterns (8x165.1, 8x180).
- Observed bolt-pattern variants for this model: 2
- Observed center-bore variants for this model: 2
- Observed lug-size variants for this model: 1
- Observed total offset span across years: 16.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50-100 miles of driving to maintain clamping force.
- ✅ Avoid wheels with offset beyond 20-32mm range to prevent rubbing or bearing stress.
- ✅ Check for clearance between wheel spokes and brake calipers, especially with larger aftermarket wheels.
- ⚠️ Torque lugs in a star pattern to 140 ft-lbs (190 Nm), then re-check torque after 50-100 km (30-60 miles).
- ⚠️ This model has multiple bolt-pattern records across years. Match wheels to exact year/trim before purchase.
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2008 Chevrolet Silverado 2500 HD Extended Cab — Frequently Asked Questions
What is the bolt pattern for a 2008 Chevrolet Silverado 2500 HD Extended Cab?
The 2008 Chevrolet Silverado 2500 HD Extended Cab uses a 8x165.1 bolt pattern (also called lug pattern or PCD). The center bore is 116.6mm and the offset is 26mm.
What other years of Chevrolet Silverado 2500 HD Extended Cab have the same bolt pattern as the 2008?
The Chevrolet Silverado 2500 HD Extended Cab uses the 8x165.1 pattern from 1999 through 2011. Wheels from any of these model years are dimensionally compatible with the 2008, provided the offset and center bore also match.
Why is matching the 116.6mm center bore important for the 2008 Silverado 2500 HD Extended Cab?
The 116.6mm 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.
What does 26mm offset mean for the 2008 Silverado 2500 HD Extended Cab?
An offset of 26mm means the wheel's mounting surface is 26mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your Chevrolet.
Do 2008 Chevrolet Silverado 2500 HD Extended Cabs use lug bolts or lug nuts?
The 2008 Silverado 2500 HD Extended Cab requires N 14x1.50 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
What is the center bore of a 2008 Chevrolet Silverado 2500 HD Extended Cab?
The factory center bore (hub bore) for the 2008 Chevrolet Silverado 2500 HD Extended Cab is 116.6mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
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