2018 Chevrolet Suburban 3500HD 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 Suburban 3500HD, 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) | 31 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2018 Suburban 3500HD — Year-Specific Fitment Context
The 2018 Chevrolet Suburban 3500HD is in year 3 of 4 using the 6x139.7 pattern (2016–2019). Wheels from any 2016–2019 Chevrolet Suburban 3500HD are cross-compatible with the 2018 model.
Chevrolet Suburban 3500HD Bolt Pattern by Year
The table below shows how the Suburban 3500HD's wheel specifications have changed over the years. The 2018 model year is highlighted.
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 Suburban 3500HD
For the 2018 Chevrolet Suburban 3500HD, the 78.1mm center bore is critical. Aftermarket wheels with a larger bore require hub-centric rings to prevent vibration and ensure proper load distribution. The 31mm offset is sensitive; deviations affect handling and may cause rubbing or suspension interference. Always verify lug nut thread pitch (14x1.50) and seat type—use conical (60-degree) or ball-seat nuts as specified. Never mix seat types, as improper seating can lead to wheel loss. Cross-compatible with 2016–2019 models, but confirm offset and bore for safe fitment.
Historical Fitment Data Reference
In our dataset, Chevrolet Suburban 3500HD appears from 2016 to 2019 (4 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: 59.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50–100 miles of driving to maintain clamping force.
- ✅ Avoid wheels with offset below 25mm or above 35mm to prevent rubbing or bearing stress.
- ✅ Use hub-centric rings if aftermarket wheels have a bore larger than 78.1mm; plastic rings are acceptable for street use.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
Ready to upgrade or perform maintenance?
🛒 Shop Tools & Accessories on AmazonAs an Amazon Associate, I earn from qualifying purchases.
2018 Chevrolet Suburban 3500HD — Frequently Asked Questions
What is the bolt pattern for a 2018 Chevrolet Suburban 3500HD?
The 2018 Chevrolet Suburban 3500HD uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 31mm.
What other years of Chevrolet Suburban 3500HD have the same bolt pattern as the 2018?
The Chevrolet Suburban 3500HD uses the 6x139.7 pattern from 2016 through 2019. Wheels from any of these model years are dimensionally compatible with the 2018, provided the offset and center bore also match.
What is the factory wheel offset for a 2018 Chevrolet Suburban 3500HD?
The OEM offset for the 2018 Suburban 3500HD is typically around 31mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
Can I use spacers on my 2018 Chevrolet Suburban 3500HD?
Yes, but ensure the wheel spacers match the 6x139.7 bolt pattern and 78.1mm center bore. Also verify that you have enough thread engagement for your N 14x1.50 hardware.
What is the center bore of a 2018 Chevrolet Suburban 3500HD?
The factory center bore (hub bore) for the 2018 Chevrolet Suburban 3500HD is 78.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
What does 31mm offset mean for the 2018 Suburban 3500HD?
An offset of 31mm means the wheel's mounting surface is 31mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your Chevrolet.
Need more vehicle fitment data?
Access our complete, raw JSON/CSV database of over 11,000+ vehicles for your next app or project.
Get the Full Dataset