2009 Audi S8 Wheel Interchange

OEM wheel and tire fitment specs for the 2009 Audi S8, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.

2009 Audi S8 Fitment Specs

Baseline mounting dimensions used for interchange decisions.

Bolt Pattern5x112
Center Bore57.1 mm
Lug ThreadM14 x 1.5
OEM Wheel Sizes20" – 21"
OEM Widths9" – 10"
OEM Offset Range38 mm – 45 mm

Wheels That Interchange With a 2009 Audi S8

Results are evaluated from bolt pattern, center bore direction, OEM width/offset envelope, and lug hardware – not bolt pattern alone.

Direct Fit

2008 Audi S8

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Mounting dimensions align with known OEM fitment for this vehicle.

2007 Audi S8

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Mounting dimensions align with known OEM fitment for this vehicle.

2003 Audi S8

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Geometry within known OEM envelope (approx. outer change -2.85 mm, inner change -9.85 mm vs mid OEM).

2002 Audi S8

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Geometry within known OEM envelope (approx. outer change -2.85 mm, inner change -9.85 mm vs mid OEM).

2001 Audi S8

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Geometry within known OEM envelope (approx. outer change -2.85 mm, inner change -9.85 mm vs mid OEM).

2004 Audi A6

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Geometry within known OEM envelope (approx. outer change -2.85 mm, inner change -9.85 mm vs mid OEM).

2005 Audi A6

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Geometry within known OEM envelope (approx. outer change -2.85 mm, inner change -9.85 mm vs mid OEM).

2006 Audi A6

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Geometry within known OEM envelope (approx. outer change -2.85 mm, inner change -9.85 mm vs mid OEM).

2007 Audi A6

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Geometry within known OEM envelope (approx. outer change -2.85 mm, inner change -9.85 mm vs mid OEM).

2008 Audi A6

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Geometry within known OEM envelope (approx. outer change -2.85 mm, inner change -9.85 mm vs mid OEM).

2009 Audi A6

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Geometry within known OEM envelope (approx. outer change -2.85 mm, inner change -9.85 mm vs mid OEM).

2010 Audi A6

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Geometry within known OEM envelope (approx. outer change -2.85 mm, inner change -9.85 mm vs mid OEM).

1999 Audi A8

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Geometry within known OEM envelope (approx. outer change -5.85 mm, inner change -6.85 mm vs mid OEM).

2000 Audi A8

Direct Fit
  • Bolt pattern5x112 · Match
  • Center bore57.1 mm · Match
  • Wheel geometryCompatible with OEM envelope

Geometry within known OEM envelope (approx. outer change -5.85 mm, inner change -6.85 mm vs mid OEM).

Fits With Hub Rings

2013 Audi S8

Fits With Hub Rings
  • Bolt pattern5x112 · Match
  • Center bore66.5 → 57.1 mm

Required part66.5 → 57.1 mm hub-centric rings

Required: 66.5 → 57.1 mm hub-centric rings. Donor width/offset sits outside the known OEM envelope for this vehicle.

See matching hub rings →

2014 Audi S8

Fits With Hub Rings
  • Bolt pattern5x112 · Match
  • Center bore66.5 → 57.1 mm

Required part66.5 → 57.1 mm hub-centric rings

Required: 66.5 → 57.1 mm hub-centric rings. Donor width/offset sits outside the known OEM envelope for this vehicle.

See matching hub rings →

2015 Audi S8

Fits With Hub Rings
  • Bolt pattern5x112 · Match
  • Center bore66.5 → 57.1 mm

Required part66.5 → 57.1 mm hub-centric rings

Required: 66.5 → 57.1 mm hub-centric rings. Donor width/offset sits outside the known OEM envelope for this vehicle.

See matching hub rings →

2016 Audi S8

Fits With Hub Rings
  • Bolt pattern5x112 · Match
  • Center bore66.5 → 57.1 mm

Required part66.5 → 57.1 mm hub-centric rings

Required: 66.5 → 57.1 mm hub-centric rings. Donor width/offset sits outside the known OEM envelope for this vehicle.

See matching hub rings →

2017 Audi S8

Fits With Hub Rings
  • Bolt pattern5x112 · Match
  • Center bore66.5 → 57.1 mm

Required part66.5 → 57.1 mm hub-centric rings

Required: 66.5 → 57.1 mm hub-centric rings. Donor width/offset sits outside the known OEM envelope for this vehicle.

See matching hub rings →

2018 Audi S8

Fits With Hub Rings
  • Bolt pattern5x112 · Match
  • Center bore66.5 → 57.1 mm

Required part66.5 → 57.1 mm hub-centric rings

Required: 66.5 → 57.1 mm hub-centric rings. Donor width/offset sits outside the known OEM envelope for this vehicle.

See matching hub rings →

2020 Audi S8

Fits With Hub Rings
  • Bolt pattern5x112 · Match
  • Center bore66.5 → 57.1 mm
  • Wheel geometryCompatible with OEM envelope

Required part66.5 → 57.1 mm hub-centric rings

Required: 66.5 → 57.1 mm hub-centric rings. Geometry within known OEM envelope (approx. outer change -1.85 mm, inner change -10.85 mm vs mid OEM).

See matching hub rings →

2021 Audi S8

Fits With Hub Rings
  • Bolt pattern5x112 · Match
  • Center bore66.5 → 57.1 mm
  • Wheel geometryCompatible with OEM envelope

Required part66.5 → 57.1 mm hub-centric rings

Required: 66.5 → 57.1 mm hub-centric rings. Geometry within known OEM envelope (approx. outer change -1.85 mm, inner change -10.85 mm vs mid OEM).

See matching hub rings →

2022 Audi S8

Fits With Hub Rings
  • Bolt pattern5x112 · Match
  • Center bore66.5 → 57.1 mm
  • Wheel geometryCompatible with OEM envelope

Required part66.5 → 57.1 mm hub-centric rings

Required: 66.5 → 57.1 mm hub-centric rings. Geometry within known OEM envelope (approx. outer change -1.85 mm, inner change -10.85 mm vs mid OEM).

See matching hub rings →

Check Fitment

2023 Audi S8

Check Fitment
  • Bolt pattern5x112 · Match
  • Center bore66.5 → 57.1 mm
  • Wheel geometryNot fully verified

Required part66.5 → 57.1 mm hub-centric rings

Wheel width/offset data is incomplete. Hub ring 66.5 → 57.1 mm may apply if mounting dimensions are otherwise compatible.

See matching hub rings →

Showing 24 of 143 evaluated donors. Same-model years are prioritized.

Audi S8 Years With Compatible Wheels

Only years with evidence-based interchange relationships are listed. Adjacent years are not assumed compatible.

Will Wheels From Another Vehicle Fit?

Compare a donor vehicle or custom wheel against this 2009 Audi S8.

Compare

Compare wheel compatibility between two vehicles

Wheels from (donor vehicle)

Installed on (your vehicle)

Selected Car:

2009 Audi S8

Compare Rims

Specification
Wheels from
Installed on
Result (Click it)
Bolt Pattern
Bolt Pattern
The total number of bolt holes and the diameter of the circle they form.
-
5x112
Center Bore
Center Bore
The hole in the center of the wheel that fits over the vehicle’s hub.
-
57.1 mm
Thread Size
Thread Size
The size and spacing of the threads on the bolts or nuts that hold the wheel in place.
-
M14 x 1.5
Rim Diameter
Rim Diameter
The wheel diameter in inches that determines which tire sizes will fit.
-
20"
Rim Width
Rim Width
The distance between the inner edges of the wheel is measured in inches.
-
9.0"
Wheel Offset
Wheel Offset
How far the wheel sits inward or outward relative to the hub mounting surface.
-
45 mm
Backspacing
Backspacing
Shows how much space the wheel takes up toward the inside of the vehicle.
-
-
Wheel Fasteners
Wheel Fasteners
The type of hardware used to secure the wheel to the vehicle.
-
-

Wheel Fitment Parts for the 2009 Audi S8

Products below are matched to required fitment dimensions from our parts inventory. Confirm seat style, thickness, and clearance before ordering.

Lug Nuts / Wheel Bolts

M14 x 1.5

Wheel Adapters

5x112 · 57.1 mm hub

Directional bolt-pattern adapters. A spacer does not change PCD.

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Why These Wheels Fit

Wheel interchange depends on more than bolt pattern. Where data is available, this site compares:

  • Bolt pattern / PCD
  • Center bore direction (donor wheel bore must not be smaller than the hub)
  • Wheel diameter, width, and offset against known OEM ranges
  • Lug thread / hardware differences (vehicle-side hardware)

A normal wheel spacer does not change bolt pattern. Hub rings cannot enlarge a wheel bore that is smaller than the hub. Brake clearance and tire package fitment still require vehicle-specific checks when not confirmed in the dataset.

tl;dr

  • OEM baseline for 2009 Audi S8: 20x9 ET45 with 265/35R20.
  • Bolt pattern 5x112. Center bore 57.1 mm. Thread M14 x 1.5.
  • Backspacing is 6.27 in. Use hub centering on 57.1 mm.
  • Use the on-page calculator to compare changes before you buy.
  • Confirm torque value and lug seat type in OEM sources.

Recommendation

Start from the factory spec and make small, measured changes. Use the wheelinterchange.com calculator to compare any donor wheel or custom size against your S8. Keep overall tire diameter close to the OEM tire to protect speedometer accuracy and driver aids. Maintain hub centering on 57.1 mm. Verify brake and fender clearance before mounting tires. If anything is unknown, confirm it with the calculator and your OEM documentation.

Impact

Offset and track width

Offset changes move the wheel in or out. More positive ET tucks the wheel inboard. Less positive ET pushes it outward. Inboard moves risk suspension and liner contact under compression. Outboard moves risk fender or arch contact on bumps and turns. The calculator shows these shifts in millimeters so you can visualize the change.

Width and clearance

Wider rims add tire section width and bulge depending on tire choice. Inner clearance to struts and control arms is the usual limit. Outer clearance to the fender lip is the next constraint. The calculator compares inner and outer positions versus OEM, which helps you gauge safe room.

Tire diameter and ride

Tire outside diameter affects speedometer, gearing feel, and ABS stability tuning. The calculator updates tire diameter when you change rim diameter, so you can keep total diameter close to stock. That preserves handling balance and avoids false ABS or stability events.

Hub, bolts, and vibration

Your hub bore is 57.1 mm. Aftermarket wheels with larger bores need 57.1 rings to stay hubcentric. Smaller bores do not fit. Thread size is M14 x 1.5. Lug seat type can vary by wheel, so match the seat to the wheel design. Mismatched seats can loosen and cause vibration.

Risks

  • Brake caliper spoke contact from low offset or wrong spoke profile.
  • Inner liner or knuckle rub under load with wider setups.
  • Outer fender contact on compression or full lock turns.
  • Vibration from running lugcentric without proper 57.1 rings.
  • Lug seat mismatch causing bolt loosening or damaged seats.
  • Incorrect bolt length bottoming in hubs or not engaging enough threads.
  • Speedometer error and stability control quirks from big tire diameter changes.
  • TPMS compatibility can vary by market and equipment. Confirm on your car.

Next actions

Checklist

  • Confirm the baseline below matches your trim and build.
  • Open the on-page calculator. Set Installed on to 2009 Audi S8.
  • Compare a donor wheel or enter Custom wheel size and Custom tire size.
  • Review inner clearance, outer poke, and tire diameter differences.
  • Check brake spoke clearance using a straight edge and ruler after a test fit.
  • Verify hub bore 57.1 mm. Plan hubcentric rings if the wheel bore is larger.
  • Match lug seat type to the wheel. Confirm M14 x 1.5 thread.
  • Torque to OEM spec in a star pattern. Recheck after 50–100 miles.

How to confirm unknowns

  • Torque spec and lug seat type: owner’s manual or OEM service info.
  • Brake clearance: use the calculator, then test fit with no tire, rotate, and inspect.
  • Fender clearance: load the suspension and steer to full lock both directions.
  • TPMS type: check your cluster, valve stems, or parts catalog for your VIN.

Known OEM fitment for 2009 Audi S8

SpecValue
Bolt pattern5x112
Center bore57.1 mm
Thread sizeM14 x 1.5
Rim size20 x 9.0 in
Wheel offsetET45
Backspacing6.27 in
Tire size265/35R20

Gotchas

  • Do not force smaller hub bores onto a 57.1 hub. They will not fit.
  • Do not rely on lug bolts to center the wheel. Use proper rings if needed.
  • Do not guess bolt length or seat type. Verify against your wheel design.
  • Spacers and extended hardware require precise measurements and quality parts. Measure first.

Helpful tools

If any value differs by trim or region, use the calculator and OEM sources to confirm before purchase. Small, verified changes reduce risk and keep the S8 driving as intended.

Nick Marchenko

Automotive Expert