1999 GMC Savana 2500 Cargo Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 1999 GMC Savana 2500 Cargo, 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) | 28 |
| Torque Specs | 140 ft-lbs (190 Nm) |
Imperial Match: 8x165.1 is commonly referred to as 8x6.5" in US Standard.
1999 Savana 2500 Cargo — Year-Specific Fitment Context
The 1999 GMC Savana 2500 Cargo is in year 4 of 15 using the 8x165.1 pattern (1996–2010). Wheels from any 1996–2010 GMC Savana 2500 Cargo are cross-compatible with the 1999 model. Across its full production run (1996–2024), the Savana 2500 Cargo has also used: 8x180.
GMC Savana 2500 Cargo Bolt Pattern by Year
The table below shows how the Savana 2500 Cargo's wheel specifications have changed over the years. The 1999 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1996 | 8x165.1 | 116.7 | 28 |
| 1997 | 8x165.1 | 116.7 | 28 |
| 1998 | 8x165.1 | 116.7 | 28 |
| ▸ 1999 | 8x165.1 | 116.7 | 28 |
| 2000 | 8x165.1 | 116.7 | 28 |
| 2001 | 8x165.1 | 116.7 | 28 |
| 2002 | 8x165.1 | 116.7 | 28 |
| 2003 | 8x165.1 | 116.7 | 28 |
| 2004 | 8x165.1 | 116.7 | 28 |
| 2005 | 8x165.1 | 116.7 | 28 |
| 2006 | 8x165.1 | 116.7 | 28 |
| 2007 | 8x165.1 | 116.7 | 28 |
| 2008 | 8x165.1 | 116.7 | 28 |
| 2009 | 8x165.1 | 116.7 | 28 |
| 2010 | 8x165.1 | 116.7 | 28 |
| 2011 | 8x180 | 124.9 | 44 |
| 2012 | 8x180 | 124.9 | 44 |
| 2013 | 8x180 | 124.9 | 44 |
| 2014 | 8x180 | 124.9 | 44 |
| 2015 | 8x180 | 124.9 | 44 |
| 2016 | 8x180 | 124.9 | 44 |
| 2017 | 8x180 | 124.9 | 44 |
| 2018 | 8x180 | 124.9 | 44 |
| 2019 | 8x180 | 124.9 | 44 |
| 2021 | 8x180 | 124.9 | 44 |
| 2022 | 8x180 | 124.9 | 44 |
| 2023 | 8x180 | 124.9 | 44 |
| 2024 | 8x180 | 124.9 | 44 |
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 1999 GMC Savana 2500 Cargo
For your 1999 GMC Savana 2500 Cargo, the bolt pattern is 8x165.1mm with a critical center bore of 116.7mm. Aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibration and ensure proper load distribution. The offset range is sensitive; stick to 28mm ±5mm to avoid rubbing or clearance issues. Always use the correct lug nuts: 14x1.5 thread pitch with a conical (60-degree) or ball seat—mismatched seats can cause wheel loosening. Re-torque after 50 miles of driving. Wheels from 1996–2010 Savana 2500 are direct fit; avoid 8x180 pattern wheels from later models.
Historical Fitment Data Reference
In our dataset, GMC Savana 2500 Cargo appears from 1996 to 2024 (28 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
- ✅ Always use hub-centric rings if aftermarket wheels have a bore larger than 116.7mm to prevent vibration.
- ✅ Re-torque lug nuts to 140 ft-lb after 50 miles of driving to ensure proper seating.
- ✅ Verify wheel offset is within 28mm ±5mm; higher offset may contact suspension, lower offset may protrude beyond fenders.
- ⚠️ 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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1999 GMC Savana 2500 Cargo — Frequently Asked Questions
What is the bolt pattern for a 1999 GMC Savana 2500 Cargo?
The 1999 GMC Savana 2500 Cargo uses a 8x165.1 bolt pattern (also called lug pattern or PCD). The center bore is 116.7mm and the offset is 28mm.
What other years of GMC Savana 2500 Cargo have the same bolt pattern as the 1999?
The GMC Savana 2500 Cargo uses the 8x165.1 pattern from 1996 through 2010. Wheels from any of these model years are dimensionally compatible with the 1999, provided the offset and center bore also match.
Do 1999 GMC Savana 2500 Cargos use lug bolts or lug nuts?
The 1999 Savana 2500 Cargo requires 14x1.5 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
What is the factory wheel offset for a 1999 GMC Savana 2500 Cargo?
The OEM offset for the 1999 Savana 2500 Cargo is typically around 28mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
How tight should I torque the lug nuts on a 1999 GMC Savana 2500 Cargo?
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.
How do I measure the bolt pattern on my 1999 GMC?
The 1999 Savana 2500 Cargo uses a 8x165.1 pattern. For 4, 6, or 8-lug wheels, measure center-to-center across opposite holes. For 5-lug, measure from the center of one hole to the back of the opposite hole.
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