The 2012 Audi A6 typically uses lug bolts (not lug nuts) in a 5-lug, 112 mm bolt circle with M14x1.5 threads and a 60-degree conical seat; OEM bolts are usually about 27–29 mm long and torqued to roughly 110 Nm (81 ft-lb).
That configuration applies to most 2012 A6 models (C7), though some trims or aftermarket wheels can alter bolt length or seat type. If your setup uses lug nuts instead of bolts, verify the correct nut size and seat with the wheel or vehicle manufacturer, and consult a qualified technician to ensure proper fitment and safety.
Bolt pattern, thread size and seat
Key technical details you need to know when shopping for replacement hardware or wheels are summarized here.
- Bolt pattern: 5x112 mm
- Thread size: M14 x 1.5
- Seat type: 60-degree conical (ACORN) seat for lug bolts on the A6
- Center bore: 66.5 mm (hub centering; important for proper wheel fitment)
- Lug bolt length: typically around 27–29 mm; exact length depends on wheel and hub configuration
In short, use OEM-specified bolts or wheel-manufacturer-approved equivalents and torque to the recommended specification, typically around 110 Nm in a crisscross pattern.
What if your wheels use lug nuts instead?
General guidance
The 2012 A6 normally uses lug bolts, but some aftermarket setups or conversion kits may require lug nuts. If you’re dealing with lug nuts, refer to the wheel manufacturer’s specifications for the correct nut size and seat type and confirm compatibility with the 5x112 bolt pattern. A professional technician can verify fitment and proper torque.
Summary
The 2012 Audi A6 uses a 5x112 bolt pattern with M14x1.5 lug bolts and a 60-degree conical seat; typical bolt length is about 27–29 mm and the standard torque is around 110 Nm. If your wheels use lug nuts due to a special setup, always check the manufacturer specs and consult a professional to ensure safe, proper installation.