1998 GMC 2500 HD Club Coupe Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 1998 GMC 2500 HD Club Coupe, 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 2500 HD Club Coupe — Year-Specific Fitment Context
The 1998 model year is the final year of the GMC 2500 HD Club Coupe's 8x165.1 bolt pattern run (since 1997). Wheels from any 1997–1998 GMC 2500 HD Club Coupe are cross-compatible with the 1998 model.
GMC 2500 HD Club Coupe Bolt Pattern by Year
The table below shows how the 2500 HD Club Coupe'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 GMC 2500 HD Club Coupe 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, GMC 2500 HD Club Coupe 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 GMC 2500 HD Club Coupe — Frequently Asked Questions
What is the bolt pattern for a 1998 GMC 2500 HD Club Coupe?
The 1998 GMC 2500 HD Club Coupe 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 GMC 2500 HD Club Coupe have the same bolt pattern as the 1998?
The GMC 2500 HD Club Coupe 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.
Can I put aftermarket wheels on my 1998 GMC 2500 HD Club Coupe?
Absolutely. Just ensure the aftermarket wheels have a 8x165.1 bolt pattern, an offset near 20mm, and a center bore of at least 116.7mm (using hub rings if larger).
What is the factory wheel offset for a 1998 GMC 2500 HD Club Coupe?
The OEM offset for the 1998 2500 HD Club Coupe is typically around 20mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
What does 20mm offset mean for the 1998 2500 HD Club Coupe?
An offset of 20mm means the wheel's mounting surface is 20mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your GMC.
How tight should I torque the lug nuts on a 1998 GMC 2500 HD Club Coupe?
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.
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
GMC 2500 HD Club Coupe 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 GMC 2500 HD Club Coupe, please report it via our About page contact so we can verify and update this record.