OEM wheel and tire fitment specs for the 2015 Audi S5, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.
Recorded OEM specifications for the 2015 Audi S5, donor years with overlapping ranges, and a calculator to compare a selected wheel. Range overlap is not a guaranteed fit.
Center-bore records disagree: year-level hub 66.6 mm vs trim range 66.5–66.5 mm. Interchange below does not treat this as an unqualified match.
Thread-only product links are shopping examples, not verified fits. Seat style is not confirmed here. As an Amazon Associate we earn from qualifying purchases.
Donor vehicles with overlapping OEM specs
These are vehicle-year records whose recorded OEM ranges overlap this 2015 Audi S5. Overlap is not a guarantee that a specific wheel will install. Selected-wheel comparison is in the calculator below.
Evaluated 188 donor years. Listed 24 eligible overlaps (not all evaluated years are compatible). Showing all listed.
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
Center-bore records disagree (target year-level hub 66.6 mm vs trim range 66.5–66.5 mm; donor year-level hub 66.6 mm vs trim range 66.5–66.5 mm). Unqualified overlap is not claimed until the conflict is resolved. Approximate position vs the mid OEM package: outer change -1.17 mm, inner change -5.18 mm. This uses aggregated width/offset ranges, not a specific wheel.
Dataset suggestionWheel spacer ≈ 11.18 mm – not a verified installation requirement.
A spacer of about 11.18 mm is a dataset suggestion only; clearance is not verified. Estimated outer position is about 11.18 mm farther inward than the mid OEM package.
Check wheel configurationCenter-bore records disagree
Bolt pattern5x112 · Same recorded PCD
Center bore66.5 mm · same recorded hub figure
Wheel geometryOutside recorded OEM envelope
Dataset suggestionWheel spacer ≈ 7.18 mm – not a verified installation requirement.
A spacer of about 7.18 mm is a dataset suggestion only; clearance is not verified. Estimated outer position is about 7.18 mm farther inward than the mid OEM package.
Audi S5 Years With Compatible Wheels
Only years with evidence-based interchange relationships are listed. Adjacent years are not assumed compatible.
Compare a donor vehicle or custom wheel against this 2015 Audi S5. Use Compare in calculator on a donor row above to fill the donor side of this same calculator.
Compare
Compare wheel compatibility between two vehicles
Wheels from (donor vehicle)
Selected Car:
Custom wheel size (optional)
Tip: change values here to simulate custom wheels and immediately see the impact in the comparison below.
Custom tire size (optional)
Installed on (your vehicle)
Selected Car:
2015 Audi S5
Compare Rims
Specification
Wheels from
Installed on
Result (Click it)
Bolt Pattern
The total number of bolt holes and the diameter of the circle they form.
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5x112
Center Bore
The hole in the center of the wheel that fits over the vehicle’s hub.
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66.5 mm
Thread Size
The size and spacing of the threads on the bolts or nuts that hold the wheel in place.
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M14 x 1.5
Rim Diameter
The wheel diameter in inches that determines which tire sizes will fit.
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18"
Rim Width
The distance between the inner edges of the wheel is measured in inches.
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8.5"
Wheel Offset
How far the wheel sits inward or outward relative to the hub mounting surface.
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29 mm
Backspacing
Shows how much space the wheel takes up toward the inside of the vehicle.
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Wheel Fasteners
The type of hardware used to secure the wheel to the vehicle.
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Compare Tires
Specification
Wheels from
Installed on
Result (Click it)
Section Width
The width of the tire from sidewall to sidewall, measured in millimeters.
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Aspect Ratio
The height of the tire’s sidewall expressed as a percentage of its width.
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Diameter
The wheel diameter for which the tire is designed to fit.
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Tire Pressure
The recommended air pressure for safe and efficient driving.
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Overall Diameter
The total height of the tire and wheel combined affects clearance and speedometer accuracy.
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Wheel Fitment Parts for the 2015 Audi S5
Example products matched to recorded thread, hub, or spacer dimensions. They are not verified fits. Confirm seat style, thickness, and clearance before ordering.
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2015 Audi S5 wheel fitment guide
tl;dr
Use the on-page calculator to compare any wheel to your S5. Match 5x112, 66.6 mm hub, and M14x1.5 threads. Stay close to the recorded OEM offset for a clean, rub-free fit. Verify torque, seat type, and bolt length from OEM sources before driving.
Recommendation
I recommend starting from the OEM records on this page, then testing your target setup in the calculator. Keep overall tire diameter near stock and offset changes small. Test-fit one corner before mounting tires. Re-torque after a short shakedown.
Category
Recorded spec
Notes
Bolt pattern
5x112
Must match exactly
Center bore
66.6 mm
Use hub-centric rings if wheel bore is larger
Thread size
M14 x 1.5
Confirm bolt length and seat style for your wheels
Recorded wheel
20 x 9.0, ET29, 5.64 in backspacing
On file for this model year
Recorded tire
245/40R18
Also present in records for this year
Note: Factory equipment can vary by trim and package. The entries above are what we have on file for 2015. Do not assume all S5s match both lines at once. Use the door-jamb placard and owner’s manual to confirm your baseline, then model changes with the calculator.
Impact
Offset: Moving far from ET29 on a 20x9 can change fender and suspension clearance. Small changes often work, but verify.
Width: Wider wheels push inner or outer lips depending on offset. Check both sides in the calculator.
Tire diameter: Large diameter changes affect speedometer and gearing feel. Keep differences modest for street use.
Steering and ride: Lower profile tires sharpen response but add impact harshness. Balance looks with daily comfort.
Brakes: The S5 has sizable calipers. Spoke shape matters for clearance even when diameter looks fine.
Risks
Rubbing: Outer fender rub on compression or inner liner rub on lock. Check with suspension loaded.
Fastener mismatch: Wrong seat type or bolt length can loosen or damage hubs. Always match wheel maker guidance.
Hub vibration: Non-hubcentric fits cause shakes at speed. Use quality 66.6 mm rings if the wheel bore is larger.
Spacer misuse: Spacers change effective offset and require longer M14x1.5 hardware. Use hubcentric spacers only and re-check torque.
TPMS: System type can vary by market. Verify whether your car needs sensors in-wheel or uses indirect monitoring.
Next actions
Use the on-page calculator:
Set “Installed on” to 2015 Audi S5.
If copying a known setup, set “Wheels from” to that donor or enter a “Custom wheel size.”
Adjust rim diameter, width, and ET. Then adjust “Custom tire size.” The tool will update tire diameter in the comparison.
Watch inner and outer clearance, overall diameter difference, and poke vs. strut gap.
Checklist before buying:
Confirm your car’s OEM wheel and tire sizes on the door placard.
Match 5x112 bolt pattern and 66.6 mm center bore fit.
Verify bolt seat type and required bolt length with the wheel manufacturer.
Confirm torque spec in the Audi owner’s manual or service info.
If using spacers, specify hubcentric spacers and correct extended M14x1.5 bolts.
Plan a test fit on one corner. Spin by hand. Turn lock to lock. Compress the suspension if possible.
After installation, torque in a star pattern. Re-torque after 50–100 miles.
Schedule an alignment if you change width or offset meaningfully.
Do not mix tire diameters front to rear unless your driveline allows it.
Do not assume torque values. Audi publishes them by model and year.
Do not rely on just diameter. Spoke profile and barrel shape can still hit calipers.
How to confirm unknowns
If a value is missing or varies by trim, verify with the door-jamb placard, the owner’s manual, or OEM parts data using your VIN. Then mirror that baseline in the calculator and iterate from there.
Methodology and sources
Wheel interchange depends on more than bolt pattern. Where data is available, this site compares recorded OEM values:
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
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.
