2009 Audi A3 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 A3, 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) | 50 |
| Torque Specs | 100 ft-lbs (135 Nm) |
2009 A3 — Year-Specific Fitment Context
The 2009 Audi A3 is in year 4 of 19 using the 5x112 pattern (2006–2024). Wheels from any 2006–2024 Audi A3 are cross-compatible with the 2009 model.
Audi A3 Bolt Pattern by Year
The table below shows how the A3's wheel specifications have changed over the years. The 2009 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 2006 | 5x112 | 57.1 | 50 |
| 2007 | 5x112 | 57.1 | 50 |
| 2008 | 5x112 | 57.1 | 50 |
| ▸ 2009 | 5x112 | 57.1 | 50 |
| 2010 | 5x112 | 57.1 | 50 |
| 2011 | 5x112 | 57.1 | 50 |
| 2012 | 5x112 | 57.1 | 50 |
| 2013 | 5x112 | 57.1 | 50 |
| 2015 | 5x112 | 57.1 | 48 |
| 2016 | 5x112 | 57.1 | 48 |
| 2017 | 5x112 | 57.1 | 48 |
| 2018 | 5x112 | 57.1 | 48 |
| 2019 | 5x112 | 66.5 | 30-45 |
| 2020 | 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 A3
For your 2009 Audi A3, the 5x112 bolt pattern is shared across 2006–2024 models, ensuring broad wheel compatibility. However, the 57.1mm center bore is critical: aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibrations and ensure proper load distribution. The offset is sensitive; stock is 50mm, but deviations of ±5mm may affect handling or clearance. Always verify lug nut thread pitch (14x1.50) and seat type—use ball-seat lug nuts for OEM wheels or cone-seat for most aftermarket wheels. Incorrect lug nuts can cause wheel separation. Re-torque after 50–100 miles.
Historical Fitment Data Reference
In our dataset, Audi A3 appears from 2006 to 2024 (17 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: 2
- Observed lug-size variants for this model: 2
- Observed total offset span across years: 95.0 mm
Quick Tips & Safety Warnings
- ✅ Always use hub-centric rings if aftermarket wheels have a bore larger than 57.1mm to avoid vibrations.
- ✅ Re-torque lug nuts to 90 ft-lb after 50–100 miles of driving.
- ✅ Avoid spacers thicker than 5mm without extended studs to maintain safe thread engagement.
- ⚠️ 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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2009 Audi A3 — Frequently Asked Questions
What is the bolt pattern for a 2009 Audi A3?
The 2009 Audi A3 uses a 5x112 bolt pattern (also called lug pattern or PCD). The center bore is 57.1mm and the offset is 50mm.
What other years of Audi A3 have the same bolt pattern as the 2009?
The Audi A3 uses the 5x112 pattern from 2006 through 2024. Wheels from any of these model years are dimensionally compatible with the 2009, provided the offset and center bore also match.
How tight should I torque the lug nuts on a 2009 Audi A3?
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.
What is the PCD for a 2009 Audi A3?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2009 A3, the PCD is 5x112.
Why is matching the 57.1mm center bore important for the 2009 A3?
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.
What lug nut size does the 2009 Audi A3 use?
The 2009 Audi A3 uses B 14x1.50 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
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