2004 Audi S4 Wheel Offset

Quick specs

Wheel size: Multiple — see configurations
Offset: ET45 · ET38 · ET43 · ET41
Backspacing: 5.77 in · 5.00 in · 5.69 in · 5.86 in
Bolt pattern: 5×112
Center bore: 66.6 mm, 57.1 mm
Thread: M14×1.5
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	7x17	8.5x19	ET38 / ET41	5.00 in	225/45R17 / 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
4.2i · 4.2L, V8, Petrol	8.5x20	8.5x19	ET41	5.86 in	245/30R20 / 255/30R19	5x112	57.1 mm	M14 x 1.5

Wheels and hardware

Lug hardware

Wheel locks

Real-World 2004 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:

18-inch — 3 documented builds

3 documented builds.

Staggered · 18×8.5 ET30 / Rear unknown

Documented on a 2004 Audi S4 build — observed custom fitment, not a universal fit guarantee.

Wheel: STR 601

Front: 18×8.5 ET30
Rear: —

Compared with OEM

Compared with the 18×8 ET45 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 21.3 mm farther toward fender (more outward poke)
Inner edge 8.7 mm farther from suspension (more inner clearance)
Width +0.5" vs OEM

View full build on Modified1

Staggered · 18×9.5 ET30 / Rear unknown

Documented on a 2004 Audi S4 build — observed custom fitment, not a universal fit guarantee.

Wheel: Privat Kup

Front: 18×9.5 ET30
Rear: —

Compared with OEM

Compared with the 18×8 ET45 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 34 mm farther toward fender (more outward poke)
Inner edge 4 mm closer to suspension (less inner clearance)
Width +1.5" vs OEM

View full build on Modified1

Staggered · 18×8.5 ET32 / Rear unknown

Documented on a 2004 Audi S4 build — observed custom fitment, not a universal fit guarantee.

Wheel: BBS RC

Front: 18×8.5 ET32 · 225/40R18
Rear: —

Compared with OEM

Compared with the 18×8 ET45 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 19.3 mm farther toward fender (more outward poke)
Inner edge 6.7 mm farther from suspension (more inner clearance)
Width +0.5" vs OEM

View full build on Modified1

Compare your own setup

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

OEM baseline

Open full fitment calculator

More specs for the 2004 Audi S4

Each OEM row is a catalog configuration. Offset ranges are not collapsed when the database has exact setups. Documented aftermarket builds are observed setups only — not universal fit or clearance confirmation.