Audi A6 wheel offset
Wheel offset shapes how an Audi A6 sits, steers, and clears its suspension. For the C5 generation sold around 2001, the factory geometry is relatively high compared with many later Audi platforms, and moving to the wider-fitment wheels from a 2012 A6 can create interference. Understanding offset, rim width, and bolt pattern together prevents tires from rubbing the fender or contacting suspension arms, and it explains why two very different A6 model years are not a direct wheel swap.
Essential answer
The wheel offset for a 2001 Audi A6 is a positive value that places the mounting face outward from the wheel's true centerline. A positive offset moves the tire inward toward the chassis, which preserves suspension clearance on a car originally designed with a relatively narrow track. When the offset is too low, the rim and tire push outward and can contact the fender lip; when it is too high, the inner sidewall or wheel rim may strike the strut, control arm, or brake hose bracket during steering or suspension travel.
A 2012 Audi A6 wheel offset is generally lower than the early C5 fitment, partly because the newer platform uses wider wheels and different hub geometry. A wheel from the later car may physically share a bolt pattern but still sit too far out on a 2001 model once rim width and tire section are considered. Offset is not a standalone number. It works together with rim diameter, rim width, and tire compatibility to determine whether a wheel has enough clearance in the wheel well and over the brake caliper.