2018 Chevrolet Silverado 1500 Crew Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2018 Chevrolet Silverado 1500 Crew Cab, 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) | 26 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2018 Silverado 1500 Crew Cab — Year-Specific Fitment Context
The 2018 Chevrolet Silverado 1500 Crew Cab is in year 15 of 21 using the 6x139.7 pattern (2004–2024). Wheels from any 2004–2024 Chevrolet Silverado 1500 Crew Cab are cross-compatible with the 2018 model.
Chevrolet Silverado 1500 Crew Cab Bolt Pattern by Year
The table below shows how the Silverado 1500 Crew Cab's wheel specifications have changed over the years. The 2018 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 2004 | 6x139.7 | 78.1 | 16 |
| 2005 | 6x139.7 | 78.1 | 16 |
| 2006 | 6x139.7 | 78.1 | 16 |
| 2007 | 6x139.7 | 78.1 | 16 |
| 2008 | 6x139.7 | 78.1 | 16 |
| 2009 | 6x139.7 | 78.1 | 26 |
| 2010 | 6x139.7 | 78.1 | 26 |
| 2011 | 6x139.7 | 78.1 | 26 |
| 2012 | 6x139.7 | 78.1 | 26 |
| 2013 | 6x139.7 | 78.1 | 26 |
| 2014 | 6x139.7 | 78.1 | 26 |
| 2015 | 6x139.7 | 78.1 | 26 |
| 2016 | 6x139.7 | 78.1 | 26 |
| 2017 | 6x139.7 | 78.1 | 26 |
| ▸ 2018 | 6x139.7 | 78.1 | 26 |
| 2019 | 6x139.7 | 78.1 | 24-28 |
| 2020 | 6x139.7 | 78.1 | 24-28 |
| 2021 | 6x139.7 | 78.1 | 24-28 |
| 2022 | 6x139.7 | 78.1 | 24-28 |
| 2023 | 6x139.7 | 78.1 | 24-28 |
| 2024 | 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 2018 Chevrolet Silverado 1500 Crew Cab
For your 2018 Chevrolet Silverado 1500 Crew Cab, the bolt pattern is 6x139.7mm with a center bore of 78.1mm. When selecting aftermarket wheels, ensure they have a center bore of at least 78.1mm or use hub-centric rings to prevent vibrations and ensure proper load distribution. The factory offset is 26mm; deviations beyond ±10mm may cause rubbing or clearance issues. Always use lug nuts with the correct thread pitch (14x1.50) and seat type (conical/60-degree) to avoid wheel loosening. Improper lug nut seating is a safety hazard. Verify wheel load rating meets or exceeds OEM specifications.
Historical Fitment Data Reference
In our dataset, Chevrolet Silverado 1500 Crew Cab appears from 2004 to 2024 (21 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: 2
- Observed total offset span across years: 54.0 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 for brake caliper clearance when using wheels with offset less than 20mm or greater than 32mm.
- ⚠️ 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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2018 Chevrolet Silverado 1500 Crew Cab — Frequently Asked Questions
What is the bolt pattern for a 2018 Chevrolet Silverado 1500 Crew Cab?
The 2018 Chevrolet Silverado 1500 Crew Cab uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 26mm.
What other years of Chevrolet Silverado 1500 Crew Cab have the same bolt pattern as the 2018?
The Chevrolet Silverado 1500 Crew Cab uses the 6x139.7 pattern from 2004 through 2024. Wheels from any of these model years are dimensionally compatible with the 2018, provided the offset and center bore also match.
What does 26mm offset mean for the 2018 Silverado 1500 Crew 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.
What is the factory wheel offset for a 2018 Chevrolet Silverado 1500 Crew Cab?
The OEM offset for the 2018 Silverado 1500 Crew Cab is typically around 26mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
How do I measure the bolt pattern on my 2018 Chevrolet?
The 2018 Silverado 1500 Crew Cab 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.
Do 2018 Chevrolet Silverado 1500 Crew Cabs use lug bolts or lug nuts?
The 2018 Silverado 1500 Crew Cab requires N 14x1.50 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
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