2018 GMC Sierra 3500 HD 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 GMC Sierra 3500 HD Crew Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 8x180 |
|---|---|
| Lug Nut / Bolt Size | 14x1.5 |
| Center Bore (CB) | 124.9 mm |
| Offset (ET) | 44 |
| Torque Specs | 140 ft-lbs (190 Nm) |
2018 Sierra 3500 HD Crew Cab — Year-Specific Fitment Context
The 2018 GMC Sierra 3500 HD Crew Cab is in year 8 of 14 using the 8x180 pattern (2011–2024). Wheels from any 2011–2024 GMC Sierra 3500 HD Crew Cab are cross-compatible with the 2018 model. Across its full production run (2007–2024), the Sierra 3500 HD Crew Cab has also used: 8x165.1.
GMC Sierra 3500 HD Crew Cab Bolt Pattern by Year
The table below shows how the Sierra 3500 HD Crew Cab's wheel specifications have changed over the years. The 2018 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 2007 | 8x165.1 | 116.7 | 20-40 |
| 2008 | 8x165.1 | 116.7 | 20-40 |
| 2009 | 8x165.1 | 116.7 | 20-40 |
| 2010 | 8x165.1 | 116.7 | 20-40 |
| 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 |
| 2020 | 8x180 | 124.9 | 44 |
| 2021 | 8x180 | 124.9 | 44 |
| 2022 | 8x180 | 124.9 | 44 |
| 2024 | 8x180 | 124.9 | 44 |
Fitment Notes
The 2018 GMC Sierra 3500 HD Crew Cab has a bolt pattern of 8x180.
This means it is a 8 lug pattern with a circle diameter of 180mm. When shopping for aftermarket wheels, ensure the "lug pattern" or "PCD" matches these numbers.
Year-to-Year Fitment Context
In our dataset, GMC Sierra 3500 HD Crew Cab appears from 2007 to 2024 (17 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: 84.0 mm
8x180 Pattern Context
This bolt pattern appears on 247 vehicles in our current database and is considered moderately common.
Examples of other vehicles using 8x180:
2018 GMC Sierra 3500 HD Crew Cab — Frequently Asked Questions
What is the bolt pattern for a 2018 GMC Sierra 3500 HD Crew Cab?
The 2018 GMC Sierra 3500 HD Crew Cab uses a 8x180 bolt pattern (also called lug pattern or PCD). The center bore is 124.9mm and the offset is 44mm.
What other years of GMC Sierra 3500 HD Crew Cab have the same bolt pattern as the 2018?
The GMC Sierra 3500 HD Crew Cab uses the 8x180 pattern from 2011 through 2024. Wheels from any of these model years are dimensionally compatible with the 2018, provided the offset and center bore also match.
How tight should I torque the lug nuts on a 2018 GMC Sierra 3500 HD Crew Cab?
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 does 44mm offset mean for the 2018 Sierra 3500 HD Crew Cab?
An offset of 44mm means the wheel's mounting surface is 44mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your GMC.
Why is matching the 124.9mm center bore important for the 2018 Sierra 3500 HD Crew Cab?
The 124.9mm center bore ensures the wheel is perfectly centered on the hub. If the wheel is lug-centric instead of hub-centric, you may experience steering wheel vibration at highway speeds.
Will wheels from another GMC fit my 2018 Sierra 3500 HD Crew Cab?
Only if they share the exact same 8x180 bolt pattern, a compatible offset, and a center bore equal to or larger than 124.9mm.
Fitment Checklist Before You Buy Wheels
- 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.
Editorial Fitment Notes
GMC Sierra 3500 HD Crew Cab has multiple wheel-fitment records across generations, so matching exact year and trim is important before ordering wheels.
- Observed production years in our database: 2007-2024 (17 model years).
- Observed bolt-pattern variants: 2 (8x165.1, 8x180).
- Observed total offset span across years: 84.0 mm.
- Observed center-bore variants: 2 | lug-size variants: 1.
Data Quality & Review
Source note: Compiled from manufacturer fitment references, historical wheel data, and internal normalization rules.
Last reviewed: 2026-05-26 | Reviewed by: Bolt Pattern HQ Editorial Team
If you find a discrepancy for 2018 GMC Sierra 3500 HD Crew Cab, please report it via our About page contact so we can verify and update this record.