2009 Audi A8 Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2009 Audi A8, 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) |
2009 A8 — Year-Specific Fitment Context
The 2009 Audi A8 is in year 13 of 28 using the 5x112 pattern (1997–2024). Wheels from any 1997–2024 Audi A8 are cross-compatible with the 2009 model.
Audi A8 Bolt Pattern by Year
The table below shows how the A8's wheel specifications have changed over the years. The 2009 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 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 | 66.6 | 42 |
| 2012 | 5x112 | 66.6 | 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 |
| 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 2009 Audi A8
The 2009 Audi A8 uses a 5x112 bolt pattern with a 57.1mm center bore and a recommended offset of 42mm. When selecting aftermarket wheels, ensure the center bore matches exactly or use hub-centric rings to prevent vibration and ensure proper load distribution. The offset is sensitive; deviations beyond ±5mm may cause rubbing or clearance issues. Always verify lug nut thread pitch (14x1.50) and seat type—Audi uses ball seats, not conical. Using incorrect lug nuts can lead to wheel detachment. For safety, re-torque lug nuts after 50-100 miles of driving.
Historical Fitment Data Reference
In our dataset, Audi A8 appears from 1997 to 2024 (27 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 120 Nm (89 ft-lbs) after 50-100 miles of driving.
- ✅ Avoid using conical seat lug nuts; Audi requires ball seat (radius) lug nuts.
- ✅ Check for TPMS sensor compatibility; aftermarket wheels may require new sensors.
- ⚠️ 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).
Ready to upgrade or perform maintenance?
🛒 Shop Tools & Accessories on AmazonAs an Amazon Associate, I earn from qualifying purchases.
2009 Audi A8 — Frequently Asked Questions
What is the bolt pattern for a 2009 Audi A8?
The 2009 Audi A8 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 A8 have the same bolt pattern as the 2009?
The Audi A8 uses the 5x112 pattern from 1997 through 2024. Wheels from any of these model years are dimensionally compatible with the 2009, provided the offset and center bore also match.
What does 42mm offset mean for the 2009 A8?
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.
What is the PCD for a 2009 Audi A8?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2009 A8, the PCD is 5x112.
How do I measure the bolt pattern on my 2009 Audi?
The 2009 A8 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.
Why is matching the 57.1mm center bore important for the 2009 A8?
The 57.1mm 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.
Need more vehicle fitment data?
Access our complete, raw JSON/CSV database of over 11,000+ vehicles for your next app or project.
Get the Full Dataset