2021 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 2021 Chevrolet Silverado 1500 Crew Cab, 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.
2021 Silverado 1500 Crew Cab — Year-Specific Fitment Context
The 2021 Chevrolet Silverado 1500 Crew Cab is in year 18 of 21 using the 6x139.7 pattern (2004–2024). Wheels from any 2004–2024 Chevrolet Silverado 1500 Crew Cab are cross-compatible with the 2021 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 2021 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 2021 Chevrolet Silverado 1500 Crew Cab
For your 2021 Chevrolet Silverado 1500 Crew Cab, the 6x139.7 bolt pattern is shared with 2004–2024 models, ensuring broad compatibility. However, the factory center bore is 78.1mm; aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibration and ensure proper load distribution. Offset must stay within 24–28mm to avoid rubbing or suspension interference. Always use 14x1.5 lug nuts with the correct seat type—factory wheels use a cone seat, while aftermarket may require ball or tapered seats. Mismatched seats can cause wheel loosening. Safety first: verify all specs before installation.
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 verifying center bore; hub rings are mandatory for 78.1mm hubs.
- ✅ Check offset carefully: lower offset (24mm) pushes wheels outward, risking fender rub; higher offset (28mm) pulls them inward, potentially contacting suspension components.
- ⚠️ 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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2021 Chevrolet Silverado 1500 Crew Cab — Frequently Asked Questions
What is the bolt pattern for a 2021 Chevrolet Silverado 1500 Crew Cab?
The 2021 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 24-28mm.
What other years of Chevrolet Silverado 1500 Crew Cab have the same bolt pattern as the 2021?
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 2021, provided the offset and center bore also match.
How do I measure the bolt pattern on my 2021 Chevrolet?
The 2021 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.
What is the factory wheel offset for a 2021 Chevrolet Silverado 1500 Crew Cab?
The OEM offset for the 2021 Silverado 1500 Crew Cab is typically around 24-28mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
What is the PCD for a 2021 Chevrolet Silverado 1500 Crew Cab?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2021 Silverado 1500 Crew Cab, the PCD is 6x139.7.
Do 2021 Chevrolet Silverado 1500 Crew Cabs use lug bolts or lug nuts?
The 2021 Silverado 1500 Crew Cab requires 14x1.5 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
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