1998 Chevrolet G-Series 3500 Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 1998 Chevrolet G-Series 3500, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 8x165.1 (8x6.5") |
|---|---|
| Lug Nut / Bolt Size | 14x1.5 |
| Center Bore (CB) | 116.7 mm |
| Offset (ET) | 20 |
| Torque Specs | 140 ft-lbs (190 Nm) |
1998 G-Series 3500 — Year-Specific Fitment Context
The 1998 model year is the final year of the Chevrolet G-Series 3500's 8x165.1 bolt pattern run (since 1997). Wheels from any 1997–1998 Chevrolet G-Series 3500 are cross-compatible with the 1998 model.
Chevrolet G-Series 3500 Bolt Pattern by Year
The table below shows how the G-Series 3500's wheel specifications have changed over the years. The 1998 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1997 | 8x165.1 | 116.7 | 20 |
| ▸ 1998 | 8x165.1 | 116.7 | 20 |
Fitment Notes
The 1998 Chevrolet G-Series 3500 has a bolt pattern of 8x165.1.
Imperial Conversion: This bolt pattern is commonly referred to as 8x6.5" in imperial units. When searching for aftermarket wheels, you may see them listed as 8x6.5".
This means it is a 8 lug pattern with a circle diameter of 165.1mm. When shopping for aftermarket wheels, ensure the "lug pattern" or "PCD" matches these numbers.
Year-to-Year Fitment Context
In our dataset, Chevrolet G-Series 3500 appears from 1997 to 1998 (2 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
8x165.1 Pattern Context
This bolt pattern appears on 846 vehicles in our current database and is considered common.
Examples of other vehicles using 8x165.1:
1998 Chevrolet G-Series 3500 — Frequently Asked Questions
What is the bolt pattern for a 1998 Chevrolet G-Series 3500?
The 1998 Chevrolet G-Series 3500 uses a 8x165.1 bolt pattern (also called lug pattern or PCD). The center bore is 116.7mm and the offset is 20mm.
What other years of Chevrolet G-Series 3500 have the same bolt pattern as the 1998?
The Chevrolet G-Series 3500 uses the 8x165.1 pattern from 1997 through 1998. Wheels from any of these model years are dimensionally compatible with the 1998, provided the offset and center bore also match.
Why is matching the 116.7mm center bore important for the 1998 G-Series 3500?
The 116.7mm 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 is the PCD for a 1998 Chevrolet G-Series 3500?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 1998 G-Series 3500, the PCD is 8x165.1.
What is the center bore of a 1998 Chevrolet G-Series 3500?
The factory center bore (hub bore) for the 1998 Chevrolet G-Series 3500 is 116.7mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
Will wheels from another Chevrolet fit my 1998 G-Series 3500?
Only if they share the exact same 8x165.1 bolt pattern, a compatible offset, and a center bore equal to or larger than 116.7mm.
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).
Editorial Fitment Notes
Chevrolet G-Series 3500 is generally consistent in bolt-pattern records across model years, but offset and hardware should still be validated before purchase.
- Observed production years in our database: 1997-1998 (2 model years).
- Observed bolt-pattern variants: 1 (8x165.1).
- Observed total offset span across years: 0.0 mm.
- Observed center-bore variants: 1 | 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 1998 Chevrolet G-Series 3500, please report it via our About page contact so we can verify and update this record.