2003 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 2003 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) |
2003 B-Series Regular Cab — Year-Specific Fitment Context
The 2003 MAZDA B-Series Regular Cab is in year 7 of 11 using the 6x139.7 pattern (1997–2007). Wheels from any 1997–2007 MAZDA B-Series Regular Cab are cross-compatible with the 2003 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 2003 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 |
Fitment Notes
The 2003 MAZDA B-Series Regular Cab has a bolt pattern of 6x139.7.
Imperial Conversion: This bolt pattern is commonly referred to as 6x5.5" in imperial units. When searching for aftermarket wheels, you may see them listed as 6x5.5".
This means it is a 6 lug pattern with a circle diameter of 139.7mm. When shopping for aftermarket wheels, ensure the "lug pattern" or "PCD" matches these numbers.
Year-to-Year Fitment Context
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
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:
2003 MAZDA B-Series Regular Cab — Frequently Asked Questions
What is the bolt pattern for a 2003 MAZDA B-Series Regular Cab?
The 2003 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 2003?
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 2003, provided the offset and center bore also match.
What is the center bore of a 2003 MAZDA B-Series Regular Cab?
The factory center bore (hub bore) for the 2003 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.
What is the factory wheel offset for a 2003 MAZDA B-Series Regular Cab?
The OEM offset for the 2003 B-Series Regular Cab is typically around 25mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
Why is matching the 93.1mm center bore important for the 2003 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.
What is the PCD for a 2003 MAZDA B-Series Regular Cab?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2003 B-Series Regular Cab, the PCD is 6x139.7.
Fitment Checklist Before You Buy Wheels
- 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.
Editorial Fitment Notes
MAZDA B-Series Regular Cab has multiple wheel-fitment records across generations, so matching exact year and trim is important before ordering wheels.
- Observed production years in our database: 1992-2009 (18 model years).
- Observed bolt-pattern variants: 2 (5x114.3, 6x139.7).
- Observed total offset span across years: 95.0 mm.
- Observed center-bore variants: 2 | lug-size variants: 2.
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 2003 MAZDA B-Series Regular Cab, please report it via our About page contact so we can verify and update this record.