2007 Audi S8 Wheel Offset

Quick specs

Wheel size: 9x20 · 9.5x21 · 10x21
Offset: ET45 · ET42 · ET38
Backspacing: 6.27 in · 6.40 in · 6.50 in
Bolt pattern: 5×112
Center bore: 57.1 mm
Thread: M14×1.5
Tire size: 265/35R20 · 275/35R20 · 275/30R21 · 285/30R21

OEM configurations

Configuration	Rim	Offset	Backspacing	Tire	Bolt pattern	Center bore	Thread
5.2FSI · 5.2L, BSM, V10, Petrol	9x20	ET45	6.27 in	265/35R20	5x112	57.1 mm	M14 x 1.5
5.2FSI · 5.2L, BSM, V10, Petrol	9x20	ET45	6.27 in	275/35R20	5x112	57.1 mm	M14 x 1.5
5.2FSI · 5.2L, BSM, V10, Petrol	9.5x21	ET42	6.40 in	275/30R21	5x112	57.1 mm	M14 x 1.5
5.2FSI · 5.2L, BSM, V10, Petrol	10x21	ET38	6.50 in	285/30R21	5x112	57.1 mm	M14 x 1.5

Wheels and hardware

Lug hardware

Wheel locks

Real-World 2007 Audi S8 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 — 1 documented build

1 documented build.

Staggered · 21×10.5 ET32 / Rear unknown

Documented on a 2007 Audi S8 build — observed custom fitment, not a universal fit guarantee.

Wheel: HRE 843R

Front: 21×10.5 ET32 · 285/30R21
Rear: —

Compared with OEM

Compared with the 21×9.5 ET42 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 22.7 mm farther toward fender (more outward poke)
Inner edge 2.7 mm closer to suspension (less inner clearance)
Width +1" 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 2007 Audi S8

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.