1999 Chevrolet Express 1500 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 Chevrolet Express 1500 Cargo, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | 14x1.5 |
| Center Bore (CB) | 78.1 mm |
| Offset (ET) | 24-28 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
1999 Express 1500 Cargo — Year-Specific Fitment Context
The 1999 model year marks the beginning of the Chevrolet Express 1500 Cargo's 6x139.7 bolt pattern era, which continued through 2014 (16 consecutive years). Wheels from any 1999–2014 Chevrolet Express 1500 Cargo are cross-compatible with the 1999 model.
Chevrolet Express 1500 Cargo Bolt Pattern by Year
The table below shows how the Express 1500 Cargo's wheel specifications have changed over the years. The 1999 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| ▸ 1999 | 6x139.7 | 78.1 | 24-28 |
| 2000 | 6x139.7 | 78.1 | 24-28 |
| 2001 | 6x139.7 | 78.1 | 24-28 |
| 2002 | 6x139.7 | 78.1 | 24-28 |
| 2003 | 6x139.7 | 78.1 | 24-28 |
| 2004 | 6x139.7 | 78.1 | 24-28 |
| 2005 | 6x139.7 | 78.1 | 24-28 |
| 2006 | 6x139.7 | 78.1 | 24-28 |
| 2007 | 6x139.7 | 78.1 | 24-28 |
| 2008 | 6x139.7 | 78.1 | 24-28 |
| 2009 | 6x139.7 | 78.1 | 24-28 |
| 2010 | 6x139.7 | 78.1 | 24-28 |
| 2011 | 6x139.7 | 78.1 | 24-28 |
| 2012 | 6x139.7 | 78.1 | 24-28 |
| 2013 | 6x139.7 | 78.1 | 24-28 |
| 2014 | 6x139.7 | 78.1 | 24-28 |
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 1999 Chevrolet Express 1500 Cargo
For your 1999 Chevrolet Express 1500 Cargo, the 6x139.7 bolt pattern is shared with 1999-2014 models, offering many wheel options. Critical: the center bore is 78.1mm; aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibration and ensure proper load transfer. Offset must stay within 24-28mm; deviations risk rubbing or poor handling. Always use lug nuts with the correct 14x1.5 thread pitch and proper seat type (conical/ball seat) matching the wheel. Mismatched lug nuts can cause wheel separation. Safety first: verify all specs before installation.
Historical Fitment Data Reference
In our dataset, Chevrolet Express 1500 Cargo appears from 1999 to 2014 (16 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: 52.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50-100 miles of driving to maintain clamping force.
- ✅ Avoid using universal fit wheels without hub-centric rings; they can cause vibration and stress on studs.
- ✅ Check wheel backspacing; for this offset range, backspacing typically falls between 4.5 and 5.0 inches.
- ⚠️ This fitment uses a wide offset range. Check brake clearance and fender clearance before buying wheels.
- ⚠️ 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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1999 Chevrolet Express 1500 Cargo — Frequently Asked Questions
What is the bolt pattern for a 1999 Chevrolet Express 1500 Cargo?
The 1999 Chevrolet Express 1500 Cargo uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 24-28mm.
What other years of Chevrolet Express 1500 Cargo have the same bolt pattern as the 1999?
The Chevrolet Express 1500 Cargo uses the 6x139.7 pattern from 1999 through 2014. Wheels from any of these model years are dimensionally compatible with the 1999, provided the offset and center bore also match.
Do 1999 Chevrolet Express 1500 Cargos use lug bolts or lug nuts?
The 1999 Express 1500 Cargo requires 14x1.5 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
How do I measure the bolt pattern on my 1999 Chevrolet?
The 1999 Express 1500 Cargo uses a 6x139.7 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.
Can I put aftermarket wheels on my 1999 Chevrolet Express 1500 Cargo?
Absolutely. Just ensure the aftermarket wheels have a 6x139.7 bolt pattern, an offset near 24-28mm, and a center bore of at least 78.1mm (using hub rings if larger).
Will wheels from another Chevrolet fit my 1999 Express 1500 Cargo?
Only if they share the exact same 6x139.7 bolt pattern, a compatible offset, and a center bore equal to or larger than 78.1mm.
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