2009 Audi S4 Wheel Offset

ET45 · ET43 · ET41 · ET47

Quick specs

OEM offset: ET45 · ET43 · ET41 · ET47
Wheel size: 8x18 · 8x19 · 8.5x19 · 8.5x20
Backspacing: 5.77 in · 5.69 in · 5.86 in · 5.85 in · 5.94 in
Bolt pattern: 5×112
Center bore: 66.6 mm, 57.1 mm, 66.5 mm
Tire size: Multiple — see configurations

OEM configurations

Configuration	Front	Rear	Offset	Backspacing	Tire	Bolt pattern	Center bore	Thread
4.2i · 4.2L, V8, Petrol	8x18	8.5x19	ET45 / ET41	5.77 in	235/40R18 / 255/30R19	5x112	57.1 mm	M14 x 1.5
4.2i · 4.2L, V8, Petrol	8x19	8.5x19	ET43 / ET41	5.69 in	235/35R19 / 255/30R19	5x112	57.1 mm	M14 x 1.5
3.0 TFSi quattro · 3.0L, CAKA, V6, Petrol	8x18	—	ET47	5.85 in	245/40R18	5x112	66.5 mm	M14 x 1.5
3.0 TFSi quattro · 3.0L, CAKA, V6, Petrol	8.5x19	—	ET43	5.94 in	255/35R19	5x112	66.5 mm	M14 x 1.5
3.0 TFSi quattro · 3.0L, CAKA, V6, Petrol	8.5x20	—	ET41	5.86 in	255/30R20	5x112	66.5 mm	M14 x 1.5
3.0TFSi (ABA-8KCAKF) · 3.0L, CAK, V6, Petrol	8x18	—	ET47	5.85 in	245/40R18	5x112	66.5 mm	M14 x 1.5
3.0TFSi (ABA-8KCAKF) · 3.0L, CAK, V6, Petrol	8.5x19	—	ET43	5.94 in	255/35R19	5x112	66.5 mm	M14 x 1.5
3.0TFSi (ABA-8KCAKF) · 3.0L, CAK, V6, Petrol	8.5x20	—	ET41	5.86 in	255/30R20	5x112	66.5 mm	M14 x 1.5

See how a different wheel would sit See wheel backspacing

What happens if you change the offset?

Compare your own setup

See how a different width or offset sits versus an OEM configuration for this year.

OEM baseline

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Wheels and hardware for this vehicle

Lug hardware

Wheel locks

Real-World 2009 Audi S4 Wheel Setups

Observed aftermarket setups from documented Modified1 builds. These are individual build records — not OEM specifications and not clearance guarantees for every vehicle.

Common custom wheel sizes

Among builds in our database for this model year:

19-inch — 3 documented builds
20-inch — 2 documented builds

5 documented builds.

DiameterLayout

Staggered · 20×8.5 ET33 / Rear unknown

Documented on a 2009 Audi S4 build — observed custom fitment, not a universal fit guarantee.

Wheel: OEM Audi Q5

Front: 20×8.5 ET33 · 255/30R20
Rear: —

Compared with OEM

Compared with the 20×8.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 8 mm farther toward fender (more outward poke)
Inner edge 8 mm farther from suspension (more inner clearance)

View full build on Modified1

Staggered · 19×8.5 ET35 / Rear unknown

Documented on a 2009 Audi S4 build — observed custom fitment, not a universal fit guarantee.

Wheel: Avant Garde M580

Front: 19×8.5 ET35 · 235/35R19
Rear: —

Compared with OEM

Compared with the 19×8 ET43 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 14.3 mm farther toward fender (more outward poke)
Inner edge 1.7 mm farther from suspension (more inner clearance)
Width +0.5" vs OEM

View full build on Modified1

Staggered · 19×8.5 ET32 / Rear unknown

Documented on a 2009 Audi S4 build — observed custom fitment, not a universal fit guarantee.

Wheel: HRE 441R

Front: 19×8.5 ET32 · 225/35R19
Rear: —

Compared with OEM

Compared with the 19×8 ET43 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 17.3 mm farther toward fender (more outward poke)
Inner edge 4.7 mm farther from suspension (more inner clearance)
Width +0.5" vs OEM

View full build on Modified1

19×9.5 ET32

Documented on a 2009 Audi S4 build — observed custom fitment, not a universal fit guarantee.

Tires: 255/35R19

Compared with OEM

Compared with the 19×8 ET43 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 30 mm farther toward fender (more outward poke)
Inner edge 8 mm closer to suspension (less inner clearance)
Width +1.5" vs OEM

View full build on Modified1

Staggered · 20×10 / Rear unknown

Documented on a 2009 Audi S4 build — observed custom fitment, not a universal fit guarantee.

Wheel: Rotiform SPF

Front: 20×10
Rear: —

Compared with OEM

Compared with the 20×8.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

View full build on Modified1

More specs for the 2009 Audi S4

OEM offsets are catalog configurations, not an aftermarket “safe ET range.” Matching offset alone does not confirm clearance. Documented custom builds are observed setups only.