1994 Chevrolet 1500 Extended Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 1994 Chevrolet 1500 Extended Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | 14x1.5 |
| Center Bore (CB) | 78.1 mm |
| Offset (ET) | 24-28 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
1994 1500 Extended Cab — Year-Specific Fitment Context
The 1994 Chevrolet 1500 Extended Cab is in year 3 of 8 using the 6x139.7 pattern (1992–1999). Wheels from any 1992–1999 Chevrolet 1500 Extended Cab are cross-compatible with the 1994 model.
Chevrolet 1500 Extended Cab Bolt Pattern by Year
The table below shows how the 1500 Extended Cab's wheel specifications have changed over the years. The 1994 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 1994 Chevrolet 1500 Extended Cab
For your 1994 Chevrolet 1500 Extended Cab, the 6x139.7 bolt pattern and 78.1mm center bore are critical. Aftermarket wheels often have a larger center bore (e.g., 108mm), requiring hub-centric rings to prevent vibration and ensure proper load transfer. Offset must stay within 24-28mm; deviations risk rubbing or bearing wear. Always use 14x1.5 lug nuts with the correct seat type—factory wheels use conical (60-degree) seats, while aftermarket may require ball or shank-style nuts. Mismatched seats cause loose wheels and potential failure. Re-torque after 50-100 miles.
Historical Fitment Data Reference
In our dataset, Chevrolet 1500 Extended Cab appears from 1992 to 1999 (8 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: 52.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 140 ft-lbs after 50-100 miles, then periodically.
- ✅ Verify wheel bore diameter; if larger than 78.1mm, install hub-centric rings.
- ✅ Check offset clearance: 24-28mm ensures no rubbing on control arms or fenders.
- ⚠️ This fitment uses a wide offset range. Check brake clearance and fender clearance before buying wheels.
- ⚠️ 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.
1994 Chevrolet 1500 Extended Cab — Frequently Asked Questions
What is the bolt pattern for a 1994 Chevrolet 1500 Extended Cab?
The 1994 Chevrolet 1500 Extended Cab uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 24-28mm.
What other years of Chevrolet 1500 Extended Cab have the same bolt pattern as the 1994?
The Chevrolet 1500 Extended Cab uses the 6x139.7 pattern from 1992 through 1999. Wheels from any of these model years are dimensionally compatible with the 1994, provided the offset and center bore also match.
What does 24-28mm offset mean for the 1994 1500 Extended Cab?
An offset of 24-28mm means the wheel's mounting surface is 24-28mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your Chevrolet.
Will wheels from another Chevrolet fit my 1994 1500 Extended Cab?
Only if they share the exact same 6x139.7 bolt pattern, a compatible offset, and a center bore equal to or larger than 78.1mm.
Can I put aftermarket wheels on my 1994 Chevrolet 1500 Extended Cab?
Absolutely. Just ensure the aftermarket wheels have a 6x139.7 bolt pattern, an offset near 24-28mm, and a center bore of at least 78.1mm (using hub rings if larger).
How do I measure the bolt pattern on my 1994 Chevrolet?
The 1994 1500 Extended Cab uses a 6x139.7 pattern. For 4, 6, or 8-lug wheels, measure center-to-center across opposite holes. For 5-lug, measure from the center of one hole to the back of the opposite hole.
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