1997 Dodge Ram 1500 Regular Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 1997 Dodge Ram 1500 Regular Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x139.7 (5x5.5") |
|---|---|
| Lug Nut / Bolt Size | 9/16 |
| Center Bore (CB) | 77.8 mm |
| Offset (ET) | 19 |
| Torque Specs | 140 ft-lbs (190 Nm) |
Imperial Match: 5x139.7 is commonly referred to as 5x5.5" in US Standard.
1997 Ram 1500 Regular Cab — Year-Specific Fitment Context
The 1997 Dodge Ram 1500 Regular Cab is in year 4 of 17 using the 5x139.7 pattern (1994–2010). Wheels from any 1994–2010 Dodge Ram 1500 Regular Cab are cross-compatible with the 1997 model.
Dodge Ram 1500 Regular Cab Bolt Pattern by Year
The table below shows how the Ram 1500 Regular Cab's wheel specifications have changed over the years. The 1997 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1994 | 5x139.7 | 77.8 | 19 |
| 1995 | 5x139.7 | 77.8 | 19 |
| 1996 | 5x139.7 | 77.8 | 19 |
| ▸ 1997 | 5x139.7 | 77.8 | 19 |
| 1998 | 5x139.7 | 77.8 | 19 |
| 1999 | 5x139.7 | 77.8 | 19 |
| 2000 | 5x139.7 | 77.8 | 19 |
| 2001 | 5x139.7 | 77.8 | 19 |
| 2002 | 5x139.7 | 77.8 | 19 |
| 2003 | 5x139.7 | 77.8 | 19 |
| 2004 | 5x139.7 | 77.8 | 19 |
| 2005 | 5x139.7 | 77.8 | 19 |
| 2006 | 5x139.7 | 77.8 | 19 |
| 2007 | 5x139.7 | 77.8 | 19 |
| 2008 | 5x139.7 | 77.8 | 19 |
| 2009 | 5x139.7 | 77.8 | 19 |
| 2010 | 5x139.7 | 77.8 | 19 |
5x139.7 Pattern Context
This bolt pattern appears on 261 vehicles in our current database and is considered moderately common.
Examples of other vehicles using 5x139.7:
Expert Buying Guide for 1997 Dodge Ram 1500 Regular Cab
For your 1997 Dodge Ram 1500 Regular Cab, the 5x139.7 bolt pattern is shared with 1994–2010 models, but critical dimensions differ. The 77.8mm center bore requires hub-centric rings for aftermarket wheels to prevent vibration and ensure load is on the hub, not the lugs. Offset is sensitive: the factory 19mm offset maintains proper scrub radius and suspension geometry; deviations beyond ±10mm may cause rubbing or handling issues. Always use 9/16" lug nuts with the correct thread pitch (likely 9/16-18) and seat type—factory wheels use cone seats, while aftermarket may require ball or acorn seats. Mismatched seats can cause wheel loosening. Re-torque after 50 miles of driving.
Historical Fitment Data Reference
In our dataset, Dodge Ram 1500 Regular Cab appears from 1994 to 2010 (17 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 to 135-145 ft-lbs after 50 miles of driving to ensure proper seating.
- ✅ Avoid using universal fit wheels without hub-centric rings; the 77.8mm bore is larger than many aftermarket hubs, causing vibration.
- ✅ Check wheel backspacing: factory is about 4.5 inches; aftermarket wheels with less backspacing may rub on brake calipers or suspension.
- ⚠️ 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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1997 Dodge Ram 1500 Regular Cab — Frequently Asked Questions
What is the bolt pattern for a 1997 Dodge Ram 1500 Regular Cab?
The 1997 Dodge Ram 1500 Regular Cab uses a 5x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 77.8mm and the offset is 19mm.
What other years of Dodge Ram 1500 Regular Cab have the same bolt pattern as the 1997?
The Dodge Ram 1500 Regular Cab uses the 5x139.7 pattern from 1994 through 2010. Wheels from any of these model years are dimensionally compatible with the 1997, provided the offset and center bore also match.
How tight should I torque the lug nuts on a 1997 Dodge Ram 1500 Regular Cab?
Refer to your owner's manual for exact specs, but always tighten the 9/16 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
Why is matching the 77.8mm center bore important for the 1997 Ram 1500 Regular Cab?
The 77.8mm 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.
Do 1997 Dodge Ram 1500 Regular Cabs use lug bolts or lug nuts?
The 1997 Ram 1500 Regular Cab requires 9/16 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
Can I put aftermarket wheels on my 1997 Dodge Ram 1500 Regular Cab?
Absolutely. Just ensure the aftermarket wheels have a 5x139.7 bolt pattern, an offset near 19mm, and a center bore of at least 77.8mm (using hub rings if larger).
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