2004 Audi A6 Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2004 Audi A6, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x112 |
|---|---|
| Lug Nut / Bolt Size | B 14x1.50 |
| Center Bore (CB) | 57.1 mm |
| Offset (ET) | 42 |
| Torque Specs | 100 ft-lbs (135 Nm) |
2004 A6 — Year-Specific Fitment Context
The 2004 Audi A6 is in year 10 of 30 using the 5x112 pattern (1995–2024). Wheels from any 1995–2024 Audi A6 are cross-compatible with the 2004 model.
Audi A6 Bolt Pattern by Year
The table below shows how the A6's wheel specifications have changed over the years. The 2004 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1995 | 5x112 | 57.1 | 42 |
| 1996 | 5x112 | 57.1 | 42 |
| 1997 | 5x112 | 57.1 | 42 |
| 1998 | 5x112 | 57.1 | 42 |
| 1999 | 5x112 | 57.1 | 42 |
| 2000 | 5x112 | 57.1 | 42 |
| 2001 | 5x112 | 57.1 | 42 |
| 2002 | 5x112 | 57.1 | 42 |
| 2003 | 5x112 | 57.1 | 42 |
| ▸ 2004 | 5x112 | 57.1 | 42 |
| 2005 | 5x112 | 57.1 | 42 |
| 2006 | 5x112 | 57.1 | 42 |
| 2007 | 5x112 | 57.1 | 42 |
| 2008 | 5x112 | 57.1 | 42 |
| 2009 | 5x112 | 57.1 | 42 |
| 2010 | 5x112 | 57.1 | 42 |
| 2011 | 5x112 | 57.1 | 42 |
| 2012 | 5x112 | 57.1 | 42 |
| 2013 | 5x112 | 66.6 | 42 |
| 2014 | 5x112 | 66.6 | 42 |
| 2015 | 5x112 | 66.6 | 42 |
| 2016 | 5x112 | 66.6 | 42 |
| 2017 | 5x112 | 66.6 | 42 |
| 2018 | 5x112 | 66.5 | 30-45 |
| 2019 | 5x112 | 66.5 | 30-45 |
| 2020 | 5x112 | 66.5 | 30-45 |
| 2021 | 5x112 | 66.5 | 30-45 |
| 2022 | 5x112 | 66.5 | 30-45 |
| 2023 | 5x112 | 66.5 | 30-45 |
| 2024 | 5x112 | 66.5 | 30-45 |
5x112 Pattern Context
This bolt pattern appears on 1490 vehicles in our current database and is considered common.
Examples of other vehicles using 5x112:
Expert Buying Guide for 2004 Audi A6
For your 2004 Audi A6, the 5x112 bolt pattern is shared across 1995–2024 models, but critical specs differ. The 57.1mm center bore requires hub-centric rings for aftermarket wheels to prevent vibration. Offset is sensitive: stock is 42mm; deviations over ±5mm may cause rubbing or clearance issues. Always use lug nuts with the correct thread pitch (14x1.50) and seat type—Audi uses ball seats, not conical. Mismatched seats can loosen or damage wheels. Verify load rating and brake clearance for 18"+ wheels. Safety first: improper fitment compromises handling.
Historical Fitment Data Reference
In our dataset, Audi A6 appears from 1995 to 2024 (30 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: 3
- Observed lug-size variants for this model: 2
- Observed total offset span across years: 87.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50 miles of driving to ensure proper seating.
- ✅ Avoid wheels with offset below 35mm (too aggressive) or above 48mm (too tucked) without testing.
- ✅ Check for caliper clearance on aftermarket wheels; some 18" designs may not clear the 2004 A6's brakes.
- ⚠️ Confirm bolt pattern carefully. 5x112 is often confused with other common 5-lug patterns.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
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2004 Audi A6 — Frequently Asked Questions
What is the bolt pattern for a 2004 Audi A6?
The 2004 Audi A6 uses a 5x112 bolt pattern (also called lug pattern or PCD). The center bore is 57.1mm and the offset is 42mm.
What other years of Audi A6 have the same bolt pattern as the 2004?
The Audi A6 uses the 5x112 pattern from 1995 through 2024. Wheels from any of these model years are dimensionally compatible with the 2004, provided the offset and center bore also match.
How do I measure the bolt pattern on my 2004 Audi?
The 2004 A6 uses a 5x112 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.
Can I put aftermarket wheels on my 2004 Audi A6?
Absolutely. Just ensure the aftermarket wheels have a 5x112 bolt pattern, an offset near 42mm, and a center bore of at least 57.1mm (using hub rings if larger).
Do 2004 Audi A6s use lug bolts or lug nuts?
The 2004 A6 requires B 14x1.50 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
What is the center bore of a 2004 Audi A6?
The factory center bore (hub bore) for the 2004 Audi A6 is 57.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
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