2003 Audi RS6 Wheel Offset

Quick specs

Wheel size: 8.5x18 · 8.5x19 · 9x20 · 7.5x18
Offset: ET30 · ET28 · ET21 · ET20
Backspacing: 5.43 in · 5.35 in · 5.33 in · 4.54 in
Bolt pattern: 5×112
Center bore: 57.1 mm
Thread: M14×1.5
Tire size: 255/40R18 · 255/35R19 · 255/30R20 · 225/45R18

OEM configurations

Configuration	Front	Rear	Offset	Backspacing	Tire	Bolt pattern	Center bore	Thread
4.2TFSi · 4.2L, BCY, V8, Petrol	8.5x18	7.5x18	ET30 / ET20	5.43 in	255/40R18 / 225/45R18	5x112	57.1 mm	M14 x 1.5
4.2TFSi · 4.2L, BCY, V8, Petrol	8.5x19	7.5x18	ET28 / ET20	5.35 in	255/35R19 / 225/45R18	5x112	57.1 mm	M14 x 1.5
4.2TFSi · 4.2L, BCY, V8, Petrol	9x20	7.5x18	ET21 / ET20	5.33 in	255/30R20 / 225/45R18	5x112	57.1 mm	M14 x 1.5

Wheels and hardware

Lug hardware

Wheel locks

Real-World 2003 Audi RS6 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:

21-inch — 5 documented builds
22-inch — 5 documented builds
20-inch — 2 documented builds

12 documented builds.

Diameter

Staggered · 20×9 ET35 / Rear unknown

Documented on a 2003 Audi RS6 build — observed custom fitment, not a universal fit guarantee.

Wheel: OEM

Front: 20×9 ET35 · 255/30R20
Rear: —

Compared with OEM

Compared with the 20×9 ET21 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 14 mm less outward poke
Inner edge 14 mm closer to suspension (less inner clearance)

View full build on Modified1

Staggered · 22×10 ET52 / Rear unknown

Documented on a 2003 Audi RS6 build — observed custom fitment, not a universal fit guarantee.

Wheel: ABT DR Sport

Front: 22×10 ET52 · 295/25R22
Rear: —

Compared with OEM

Compared with the 20×9 ET21 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 18.3 mm less outward poke
Inner edge 43.7 mm closer to suspension (less inner clearance)
Width +1" vs OEM
Diameter +2" vs OEM

View full build on Modified1

Staggered · 22×10.5 / Rear unknown

Documented on a 2003 Audi RS6 build — observed custom fitment, not a universal fit guarantee.

Wheel: Apex M126

Front: 22×10.5 · 285/35R22
Rear: —

Compared with OEM

Compared with the 20×9 ET21 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +2" vs OEM

View full build on Modified1

Staggered · 21×10.5 / Rear unknown

Documented on a 2003 Audi RS6 build — observed custom fitment, not a universal fit guarantee.

Wheel: Niche Essen - M147

Front: 21×10.5
Rear: —

Compared with OEM

Compared with the 20×9 ET21 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 22×10 / Rear unknown

Documented on a 2003 Audi RS6 build — observed custom fitment, not a universal fit guarantee.

Wheel: ABT FR

Front: 22×10 · 295/25R22
Rear: —

Compared with OEM

Compared with the 20×9 ET21 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +2" vs OEM

View full build on Modified1

Staggered · 21×10 / Rear unknown

Documented on a 2003 Audi RS6 build — observed custom fitment, not a universal fit guarantee.

Wheel: ADV.1 10TSSL

Front: 21×10
Rear: —

Compared with OEM

Compared with the 20×9 ET21 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 21×10.5 / Rear unknown

Documented on a 2003 Audi RS6 build — observed custom fitment, not a universal fit guarantee.

Wheel: ADV.1 08TS

Front: 21×10.5
Rear: —

Compared with OEM

Compared with the 20×9 ET21 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 21×10.5 / Rear unknown

Documented on a 2003 Audi RS6 build — observed custom fitment, not a universal fit guarantee.

Wheel: ADV.1 08 Track Spec

Front: 21×10.5
Rear: —

Compared with OEM

Compared with the 20×9 ET21 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 21×10 / 21×10.5

Documented on a 2003 Audi RS6 build — observed custom fitment, not a universal fit guarantee.

Wheel: ADV.1

Front: 21×10
Rear: 21×10.5

Compared with OEM

Compared with the 20×9 ET21 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 22×10.5 / Rear unknown

Documented on a 2003 Audi RS6 build — observed custom fitment, not a universal fit guarantee.

Wheel: Niche Apex - M126

Front: 22×10.5
Rear: —

Compared with OEM

Compared with the 20×9 ET21 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +2" vs OEM

View full build on Modified1

Staggered · 22×10.5 / Rear unknown

Documented on a 2003 Audi RS6 build — observed custom fitment, not a universal fit guarantee.

Wheel: Vossen CV3

Front: 22×10.5
Rear: —

Compared with OEM

Compared with the 20×9 ET21 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +2" vs OEM

View full build on Modified1

Staggered · 20×? / Rear unknown

Documented on a 2003 Audi RS6 build — observed custom fitment, not a universal fit guarantee.

Wheel: MTM Bitmoto

Front: 20×? · 285/35R20
Rear: —

Compared with OEM

Compared with the 20×9 ET21 OEM configuration. Calculated geometry only — not fit confirmation.

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 2003 Audi RS6

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.