2008 Audi S8 tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x112 on every 2008 trim.

Tires for the 2008 Audi S8

Sizes most trims come with first. Open your trim below for its exact size.

265/35R20 Best-rated standard on 1 trim

Check price on Amazon · 265/35R20
275/35R20 Best-rated optional on 1 trim

Check price on Amazon · 275/35R20
275/30R21 Best-rated optional on 1 trim

Check price on Amazon · 275/30R21

Also listed: 285/30R21

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Trims sold in 2008: 1
Generation: D3
Other years: 2002
2003
2006
2007
2008
2009
2010
2011
All years (1996–2027)

1 trim sold in 2008

Open a trim for its tire and rim sizes, bolt pattern and tire pressure.

Audi S8 D3

2006–2011 1 trim

S8 5.2FSI 444 hp · 5.2L BSM V10 265/35R20 99Y 4 fitments

Generation: D3 · 2006–2011
Power: 444 hp
Engine: 5.2L BSM V10, Petrol
Center bore: 57.1 mm
Bolt pattern: 5x112
Thread: M14 x 1.5

Check price on Amazon · 265/35R20 Wheels 20x9 ET45 · 5x112 · 57.1 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
265/35R20 99Y	Rim 20x9 ET45 ~~5x112~~	39 psi
275/35R20 99Y	Rim 20x9 ET45 ~~5x112~~	39 psi
275/30R21 99Y	Rim 21x9.5 ET42 ~~5x112~~	41 psi
285/30R21 98Z	Rim 21x10 ET38 ~~5x112~~	41 psi

How to read 99Y: 99 is the load index (up to 1,709 lb / 775 kg per tire) and Y the speed rating (up to 186 mph / 300 km/h). ET45 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

What these columns mean

Rim size: Rim diameter × width in inches, and the factory offset (ET) in millimetres, e.g. 18x7.5 ET25.
Bolt pattern (PCD): Number of studs and the diameter of the circle they sit on. It must match exactly.
Center bore: Diameter of the hub hole. Larger aftermarket bores need hub-centric rings.
Pressure: Recommended cold inflation pressure for that axle, in psi.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.