1999 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 1999 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) |
1999 A6 — Year-Specific Fitment Context
The 1999 Audi A6 is in year 5 of 30 using the 5x112 pattern (1995–2024). Wheels from any 1995–2024 Audi A6 are cross-compatible with the 1999 model.
Audi A6 Bolt Pattern by Year
The table below shows how the A6's wheel specifications have changed over the years. The 1999 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 1999 Audi A6
For your 1999 Audi A6, the critical fitment specs are: bolt pattern 5x112, center bore 57.1mm, offset 42mm, and lug nut size B 14x1.50. The center bore must match exactly; aftermarket wheels with a larger bore require hub-centric rings to prevent vibration and ensure proper load transfer. Offset is sensitive—deviations beyond ±5mm may cause rubbing or clearance issues. Always use the correct lug nuts: 14x1.50 thread pitch with a ball seat (Audi OEM) or compatible conical seat if specified. Never mix seat types. Re-torque after 50-100 miles. Wheels from 1995-2024 Audi A6 models are cross-compatible, but verify offset and bore.
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 to 90 ft-lb after 50-100 miles of driving.
- ✅ When using aftermarket wheels, ensure hub-centric rings are installed to match the 57.1mm center bore.
- ✅ Avoid using wheels with offset below 35mm (too aggressive) or above 48mm (too tucked) to prevent rubbing or brake clearance issues.
- ⚠️ 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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1999 Audi A6 — Frequently Asked Questions
What is the bolt pattern for a 1999 Audi A6?
The 1999 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 1999?
The Audi A6 uses the 5x112 pattern from 1995 through 2024. Wheels from any of these model years are dimensionally compatible with the 1999, provided the offset and center bore also match.
What is the center bore of a 1999 Audi A6?
The factory center bore (hub bore) for the 1999 Audi A6 is 57.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
Can I use spacers on my 1999 Audi A6?
Yes, but ensure the wheel spacers match the 5x112 bolt pattern and 57.1mm center bore. Also verify that you have enough thread engagement for your B 14x1.50 hardware.
What does 42mm offset mean for the 1999 A6?
An offset of 42mm means the wheel's mounting surface is 42mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your Audi.
How tight should I torque the lug nuts on a 1999 Audi A6?
Refer to your owner's manual for exact specs, but always tighten the B 14x1.50 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
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