1999 MAZDA B-Series 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 MAZDA B-Series Regular Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | N 12x1.50 |
| Center Bore (CB) | 93.1 mm |
| Offset (ET) | 25 |
| Torque Specs | 80 ft-lbs (108 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
1999 B-Series Regular Cab — Year-Specific Fitment Context
The 1999 MAZDA B-Series Regular Cab is in year 3 of 11 using the 6x139.7 pattern (1997–2007). Wheels from any 1997–2007 MAZDA B-Series Regular Cab are cross-compatible with the 1999 model. Across its full production run (1992–2009), the B-Series Regular Cab has also used: 5x114.3.
MAZDA B-Series Regular Cab Bolt Pattern by Year
The table below shows how the B-Series Regular Cab's wheel specifications have changed over the years. The 1999 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1992 | 5x114.3 | 67.1 | 45-50 |
| 1993 | 5x114.3 | 67.1 | 45-50 |
| 1994 | 5x114.3 | 67.1 | 45-50 |
| 1995 | 5x114.3 | 67.1 | 45-50 |
| 1996 | 5x114.3 | 67.1 | 45-50 |
| 1997 | 6x139.7 | 93.1 | 25 |
| 1998 | 6x139.7 | 93.1 | 25 |
| ▸ 1999 | 6x139.7 | 93.1 | 25 |
| 2000 | 6x139.7 | 93.1 | 25 |
| 2001 | 6x139.7 | 93.1 | 25 |
| 2002 | 6x139.7 | 93.1 | 25 |
| 2003 | 6x139.7 | 93.1 | 25 |
| 2004 | 6x139.7 | 93.1 | 25 |
| 2005 | 6x139.7 | 93.1 | 25 |
| 2006 | 6x139.7 | 93.1 | 25 |
| 2007 | 6x139.7 | 93.1 | 25 |
| 2008 | 5x114.3 | 67.1 | 45-50 |
| 2009 | 5x114.3 | 67.1 | 45-50 |
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 1999 MAZDA B-Series Regular Cab
For your 1999 MAZDA B-Series Regular Cab, the 6x139.7 bolt pattern is shared with 1997–2007 models, ensuring cross-compatibility. The 93.1mm center bore is critical: aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibration and ensure proper load transfer. Offset is sensitive; the factory 25mm offset maintains suspension geometry and brake clearance. Deviating beyond ±10mm may cause rubbing or bearing stress. Always use lug nuts with the correct thread pitch (12x1.50) and seat type (conical/60-degree). Ball-seat or incorrect pitch nuts can loosen or damage wheels. Safety first: verify all specs before installation.
Historical Fitment Data Reference
In our dataset, MAZDA B-Series Regular Cab appears from 1992 to 2009 (18 model years). Across model years, this model appears with 2 bolt patterns (5x114.3, 6x139.7).
- Observed bolt-pattern variants for this model: 2
- Observed center-bore variants for this model: 2
- Observed lug-size variants for this model: 2
- Observed total offset span across years: 95.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 85-105 ft-lbs after 50 miles of driving to ensure proper seating.
- ✅ Avoid using universal fit wheels without hub-centric rings; they can cause steering wheel shake.
- ✅ Check for caliper clearance when using wheels with offset less than 15mm; spacers may be needed.
- ⚠️ Verify thread pitch before installation; M12x1.25 and M12x1.5 are not interchangeable.
- ⚠️ Torque lugs in a star pattern to 80 ft-lbs (108 Nm), then re-check torque after 50-100 km (30-60 miles).
- ⚠️ This model has multiple bolt-pattern records across years. Match wheels to exact year/trim before purchase.
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1999 MAZDA B-Series Regular Cab — Frequently Asked Questions
What is the bolt pattern for a 1999 MAZDA B-Series Regular Cab?
The 1999 MAZDA B-Series Regular Cab uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 93.1mm and the offset is 25mm.
What other years of MAZDA B-Series Regular Cab have the same bolt pattern as the 1999?
The MAZDA B-Series Regular Cab uses the 6x139.7 pattern from 1997 through 2007. Wheels from any of these model years are dimensionally compatible with the 1999, provided the offset and center bore also match.
Can I use spacers on my 1999 MAZDA B-Series Regular Cab?
Yes, but ensure the wheel spacers match the 6x139.7 bolt pattern and 93.1mm center bore. Also verify that you have enough thread engagement for your N 12x1.50 hardware.
What is the center bore of a 1999 MAZDA B-Series Regular Cab?
The factory center bore (hub bore) for the 1999 MAZDA B-Series Regular Cab is 93.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
Why is matching the 93.1mm center bore important for the 1999 B-Series Regular Cab?
The 93.1mm 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 1999 MAZDA B-Series Regular Cabs use lug bolts or lug nuts?
The 1999 B-Series Regular Cab requires N 12x1.50 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
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