2018 GMC Sierra 3500 HD Double 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 Double 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 Double Cab — Year-Specific Fitment Context
The 2018 GMC Sierra 3500 HD Double Cab is in year 4 of 10 using the 8x180 pattern (2015–2024). Wheels from any 2015–2024 GMC Sierra 3500 HD Double Cab are cross-compatible with the 2018 model.
GMC Sierra 3500 HD Double Cab Bolt Pattern by Year
The table below shows how the Sierra 3500 HD Double Cab's wheel specifications have changed over the years. The 2018 model year is highlighted.
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 3500 HD Double Cab
For your 2018 GMC Sierra 3500 HD Double Cab, the 8x180 bolt pattern is shared across 2015–2024 models, ensuring broad compatibility. However, the 124.9mm center bore is critical: aftermarket wheels often have a larger bore (e.g., 130.1mm), requiring hub-centric rings to prevent vibration and ensure load is on the hub, not the lug nuts. Offset sensitivity is high; the factory 44mm offset is optimal for suspension and brake clearance. Deviating more than ±10mm may cause rubbing or handling issues. Always verify lug nut thread pitch (14x1.5) and seat type—use conical (60-degree) or ball-seat nuts matching the wheel. Improper seating can lead to loosening and wheel loss. Safety first: torque to 140 ft-lbs and re-torque after 50 miles.
Historical Fitment Data Reference
In our dataset, GMC Sierra 3500 HD Double Cab appears from 2015 to 2024 (7 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: 0.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 140 ft-lbs after 50 miles of driving to account for settling.
- ✅ Aftermarket wheels with a larger center bore require hub-centric rings; avoid relying solely on lug nuts for centering.
- ✅ Check wheel offset carefully: factory is 44mm; offsets below 34mm may rub suspension components on this model.
- ⚠️ Torque lugs in a star pattern to 140 ft-lbs (190 Nm), then re-check torque after 50-100 km (30-60 miles).
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2018 GMC Sierra 3500 HD Double Cab — Frequently Asked Questions
What is the bolt pattern for a 2018 GMC Sierra 3500 HD Double Cab?
The 2018 GMC Sierra 3500 HD Double 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 Double Cab have the same bolt pattern as the 2018?
The GMC Sierra 3500 HD Double Cab uses the 8x180 pattern from 2015 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 Double 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 lug nut size does the 2018 GMC Sierra 3500 HD Double Cab use?
The 2018 GMC Sierra 3500 HD Double Cab uses 14x1.5 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
Can I put aftermarket wheels on my 2018 GMC Sierra 3500 HD Double Cab?
Absolutely. Just ensure the aftermarket wheels have a 8x180 bolt pattern, an offset near 44mm, and a center bore of at least 124.9mm (using hub rings if larger).
Do 2018 GMC Sierra 3500 HD Double Cabs use lug bolts or lug nuts?
The 2018 Sierra 3500 HD Double Cab requires 14x1.5 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
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