1999 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 1999 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.
1999 Ram 1500 Regular Cab — Year-Specific Fitment Context
The 1999 Dodge Ram 1500 Regular Cab is in year 6 of 17 using the 5x139.7 pattern (1994–2010). Wheels from any 1994–2010 Dodge Ram 1500 Regular Cab are cross-compatible with the 1999 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 1999 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 1999 Dodge Ram 1500 Regular Cab
For your 1999 Dodge Ram 1500 Regular Cab, the 5x139.7 bolt pattern is shared with 1994–2010 models, but critical specs differ. The 77.8mm center bore requires hub-centric rings for aftermarket wheels to prevent vibration and hub damage. Offset is sensitive: stock is 19mm; deviations affect scrub radius and clearance. Use only 9/16" lug nuts with correct thread pitch (likely 9/16-18) and proper seat type (cone or ball seat, matching wheel). Never mix seat types. Aftermarket wheels must have sufficient load rating for your truck's GVWR. Always verify fitment with a test fit before mounting tires.
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 after 50-100 miles of driving to ensure proper seating.
- ✅ Avoid wheels with center bore larger than 77.8mm without hub-centric rings; vibration and stud stress may occur.
- ✅ Check brake caliper clearance: some aftermarket wheels may interfere with the large calipers on 1999 Ram 1500s.
- ⚠️ 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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1999 Dodge Ram 1500 Regular Cab — Frequently Asked Questions
What is the bolt pattern for a 1999 Dodge Ram 1500 Regular Cab?
The 1999 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 1999?
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 1999, provided the offset and center bore also match.
What is the factory wheel offset for a 1999 Dodge Ram 1500 Regular Cab?
The OEM offset for the 1999 Ram 1500 Regular Cab is typically around 19mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
What is the center bore of a 1999 Dodge Ram 1500 Regular Cab?
The factory center bore (hub bore) for the 1999 Dodge Ram 1500 Regular Cab is 77.8mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
How tight should I torque the lug nuts on a 1999 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.
What is the PCD for a 1999 Dodge Ram 1500 Regular Cab?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 1999 Ram 1500 Regular Cab, the PCD is 5x139.7.
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