2018 GMC Sierra 2500 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 2500 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 2500 HD Crew Cab — Year-Specific Fitment Context
The 2018 GMC Sierra 2500 HD Crew Cab is in year 8 of 14 using the 8x180 pattern (2011–2024). Wheels from any 2011–2024 GMC Sierra 2500 HD Crew Cab are cross-compatible with the 2018 model. Across its full production run (2001–2024), the Sierra 2500 HD Crew Cab has also used: 8x165.1.
GMC Sierra 2500 HD Crew Cab Bolt Pattern by Year
The table below shows how the Sierra 2500 HD Crew Cab's wheel specifications have changed over the years. The 2018 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 2001 | 8x165.1 | 116.7 | 20-40 |
| 2002 | 8x165.1 | 116.7 | 20-40 |
| 2003 | 8x165.1 | 116.7 | 20-40 |
| 2004 | 8x165.1 | 116.7 | 20-40 |
| 2005 | 8x165.1 | 116.7 | 20-40 |
| 2006 | 8x165.1 | 116.7 | 20-40 |
| 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 |
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:
Expert Buying Guide for 2018 GMC Sierra 2500 HD Crew Cab
For your 2018 GMC Sierra 2500 HD Crew Cab, the 8x180 bolt pattern and 124.9mm center bore are critical. Aftermarket wheels must have a bore ≥124.9mm; use hub-centric rings to prevent vibration and ensure load is on the hub, not the lugs. The 44mm offset is sensitive—deviations affect scrub radius and tire clearance; stay within ±5mm to avoid rubbing or steering issues. Always use 14x1.5 lug nuts with the correct seat (cone or ball) matching the wheel; improper seating can cause loosening or wheel loss. Re-torque after 50-100 miles.
Historical Fitment Data Reference
In our dataset, GMC Sierra 2500 HD Crew Cab appears from 2001 to 2024 (23 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
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 140 ft-lb after 50-100 miles of driving.
- ✅ Avoid wheels with a bore smaller than 124.9mm; they won't fit without machining.
- ✅ Check for caliper clearance when changing offset, especially with aftermarket brakes.
- ⚠️ 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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2018 GMC Sierra 2500 HD Crew Cab — Frequently Asked Questions
What is the bolt pattern for a 2018 GMC Sierra 2500 HD Crew Cab?
The 2018 GMC Sierra 2500 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 2500 HD Crew Cab have the same bolt pattern as the 2018?
The GMC Sierra 2500 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.
Can I use spacers on my 2018 GMC Sierra 2500 HD Crew Cab?
Yes, but ensure the wheel spacers match the 8x180 bolt pattern and 124.9mm center bore. Also verify that you have enough thread engagement for your 14x1.5 hardware.
Why is matching the 124.9mm center bore important for the 2018 Sierra 2500 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.
What lug nut size does the 2018 GMC Sierra 2500 HD Crew Cab use?
The 2018 GMC Sierra 2500 HD Crew Cab uses 14x1.5 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
How tight should I torque the lug nuts on a 2018 GMC Sierra 2500 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.
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