1999 GMC Savana 3500 Passenger 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 3500 Passenger, 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 3500 Passenger — Year-Specific Fitment Context
The 1999 GMC Savana 3500 Passenger is in year 4 of 15 using the 8x165.1 pattern (1996–2010). Wheels from any 1996–2010 GMC Savana 3500 Passenger are cross-compatible with the 1999 model. Across its full production run (1996–2024), the Savana 3500 Passenger has also used: 8x180.
GMC Savana 3500 Passenger Bolt Pattern by Year
The table below shows how the Savana 3500 Passenger'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 3500 Passenger
For your 1999 GMC Savana 3500 Passenger, the bolt pattern is 8x165.1mm with a center bore of 116.7mm. Aftermarket wheels often have a larger center bore, so hub-centric rings (67.1mm to 116.7mm) are essential to prevent vibration and ensure proper load distribution. The factory offset is 28mm; deviations beyond ±5mm may cause rubbing or clearance issues. Always use lug nuts with the correct thread pitch (14x1.5) and seat type (conical/60-degree) to avoid wheel loosening. Never use ball-seat lug nuts on conical-seat wheels. Re-torque after 50 miles of driving.
Historical Fitment Data Reference
In our dataset, GMC Savana 3500 Passenger 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
- ✅ Re-torque lug nuts to 140 ft-lbs after 50 miles of driving, then periodically check.
- ✅ Avoid using wheels from 2011+ Savana models as they use 8x180 bolt pattern.
- ✅ When installing aftermarket wheels, verify that the wheel's hub bore is at least 116.7mm and use hub-centric rings if larger.
- ⚠️ 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 3500 Passenger — Frequently Asked Questions
What is the bolt pattern for a 1999 GMC Savana 3500 Passenger?
The 1999 GMC Savana 3500 Passenger 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 3500 Passenger have the same bolt pattern as the 1999?
The GMC Savana 3500 Passenger 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.
What is the center bore of a 1999 GMC Savana 3500 Passenger?
The factory center bore (hub bore) for the 1999 GMC Savana 3500 Passenger is 116.7mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
How tight should I torque the lug nuts on a 1999 GMC Savana 3500 Passenger?
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.
What is the PCD for a 1999 GMC Savana 3500 Passenger?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 1999 Savana 3500 Passenger, the PCD is 8x165.1.
Can I put aftermarket wheels on my 1999 GMC Savana 3500 Passenger?
Absolutely. Just ensure the aftermarket wheels have a 8x165.1 bolt pattern, an offset near 28mm, and a center bore of at least 116.7mm (using hub rings if larger).
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