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) |
Imperial Match: 8x165.1 is commonly referred to as 8x6.5" in US Standard.
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 |
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:
Expert Buying Guide for 1998 Chevrolet G-Series 3500
For your 1998 Chevrolet G-Series 3500, the 8x165.1 bolt pattern and 116.7mm center bore are critical. Aftermarket wheels often have a larger center bore, requiring hub-centric rings to prevent vibration and ensure load is on the hub, not the lug nuts. The factory offset is 20mm; deviations beyond ±10mm may cause rubbing or clearance issues. Always use 14x1.5 lug nuts with the correct seat (cone or ball) to avoid loosening. Improper thread pitch or seat type can lead to wheel detachment. Verify wheel load rating exceeds your vehicle's GVWR.
Historical Fitment Data Reference
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
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50-100 miles of driving to maintain clamping force.
- ✅ Avoid using universal fit wheels without hub-centric rings; they can cause vibration and stress on studs.
- ✅ Check for caliper clearance when using aftermarket wheels, as the 1998 model has large front brakes.
- ⚠️ 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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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.
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