OEM wheel and tire fitment specs for the 2009 Audi A4, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.
Recorded OEM specifications for the 2009 Audi A4, donor years with overlapping ranges, and a calculator to compare a selected wheel. Range overlap is not a guaranteed fit.
Multiple OEM configurations exist for this vehicle. Fitment can vary by trim, brakes, and factory wheel package – confirm your exact setup before buying.
Center-bore records disagree: year-level hub 66.6 mm vs trim range 57.1–66.5 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 2009 Audi A4. Overlap is not a guarantee that a specific wheel will install. Selected-wheel comparison is in the calculator below.
Evaluated 323 donor years. Listed 24 eligible overlaps (not all evaluated years are compatible). Showing all listed.
Hub-centric rings of about 66.5 → 57.1 mm mm may be relevant if the wheel bore is larger than the hub; they cannot enlarge a smaller bore. Approximate position vs the mid OEM package: outer change -2.18 mm, inner change -4.18 mm. This uses aggregated width/offset ranges, not a specific wheel.
Hub-centric rings of about 66.5 → 57.1 mm mm may be relevant if the wheel bore is larger than the hub; clearance is not verified. Donor width/offset sits outside the known OEM envelope for this vehicle. Precomputed data suggested a spacer; geometry was re-checked against OEM envelope.
Hub-centric rings of about 66.5 → 57.1 mm mm may be relevant if the wheel bore is larger than the hub; clearance is not verified. Donor width/offset sits outside the known OEM envelope for this vehicle. Precomputed data suggested a spacer; geometry was re-checked against OEM envelope.
Audi A4 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 2009 Audi A4. 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:
2009 Audi A4
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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57.1 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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17"
Rim Width
The distance between the inner edges of the wheel is measured in inches.
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7.5"
Wheel Offset
How far the wheel sits inward or outward relative to the hub mounting surface.
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45 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 2009 Audi A4
Example products matched to recorded thread, hub, or spacer dimensions. They are not verified fits. Confirm seat style, thickness, and clearance before ordering.
As an Amazon Associate we earn from qualifying purchases. Product availability and pricing may change.
Goal
Confirm safe wheel and tire fitment for a 2009 Audi A4, and provide a clear process
to select, test, and validate replacement wheels while avoiding common fitment issues.
Known OEM fitment for this vehicle
Bolt pattern (studs x PCD)
5x112
Center bore (mm)
66.6
Thread size
M14 x 1.5
Rim diameter (in)
17
Rim width (in)
7.5
Wheel offset (ET, mm)
45
Backspacing (in)
5.52
Tire size (section/aspect/rim)
225 / 50R17
Assumption: these values reflect the known OEM specification provided.
Some values may vary by trim or optional packages. Use the on-page calculator
and OEM sources to confirm any missing or variant specs before ordering.
Prerequisites
Access to the on-page wheel/tire calculator on this page for quick comparisons.
Basic tools: jack, jack stands, torque wrench, calipers, straightedge.
Wheel installation supplies: correct lug nuts for M14 x 1.5, hub-centric rings if needed.
Wheel spec sheet for candidate wheels (diameter, width, offset, center bore, lug-seat type).
OEM references: owner's manual, dealer parts, or factory wheel label to confirm torque and seat type.
Do you need a different look, wider track, or different tire profile?
Each goal creates trade-offs between clearance, handling, and speedometer error.
2. Use the on-page calculator to compare sizes
Start with OEM numbers listed above. Enter them as "Installed on your vehicle".
Enter candidate wheel sizes as "Wheels from (donor vehicle)" or use custom wheel size.
Adjust rim diameter, width, and offset. Adjust tire section and aspect ratio.
The calculator updates overall diameter, track change, and offsets automatically.
3. Check critical fitment constraints
Center bore: wheel must center on 66.6 mm or use hub-centric rings.
Bolt pattern: wheels must be 5x112 to match studs.
Thread size and lug seat: use M14 x 1.5 lugs with the correct seat geometry.
Offset and backspacing: confirm inner clearance to brake calipers and suspension.
Tire diameter: keep overall diameter within about 2-3% of OEM to limit speedo error.
4. Do a physical dry-fit if possible
Mount one wheel and hand-thread all lugs. Torque to a snug value, lower vehicle, and
torque to final spec from the owner's manual or dealer. Verify clearance at full lock,
ride height, and full suspension compression.
5. Mount and balance professionally
Once fit is visually and mechanically acceptable, have tires mounted and dynamically balanced.
Use proper torque and a calibrated torque wrench for final tightening.
Validation
Validation confirms the wheel clears brakes, suspension, and body across conditions.
Checks to perform
Visual clearance: measure minimum gap between inner wheel face and brake caliper or hub.
Turn-to-lock: check for rubbing at full left and right steering lock.
Suspension travel: compress the suspension or test on slow bumps to check for rubbing.
Road test: listen for rubbing and check for vibration at several speeds.
Speedometer check: compare indicated speed to GPS or previous readings if tire diameter changed.
Use the on-page calculator to quantify diameter and track changes before the road test.
If any measurement is unknown or varies by trim, confirm that value with OEM wheel documentation.
Troubleshooting
Rubbing at inner fender or suspension
Cause: offset too low or wheel too wide for this offset. Solution: increase offset, decrease width,
or fit a narrower tire. Consider small wheel spacers only after checking hub load and stud length.
Rubbing at outer lip or fender
Cause: offset too high or tire too wide. Solution: reduce offset or tire width.
Fender rolling or professional trimming is a last-resort option and creates trade-offs.
Vibration or wobble
Cause: imbalance, bent wheel, or hub-centric mismatch. Solution: re-balance, inspect wheel, and use
proper hub-centric rings for the 66.6 mm bore if the wheel is larger than the hub bore.
Lug or thread problems
If lugs cross-thread or do not seat, confirm seat type and thread pitch M14 x 1.5.
Replace damaged studs or nuts and clean threads. Do not force mismatched hardware.
Unknown or missing specifications
If a value is unknown or varies by trim, use the on-page calculator to test variants.
Also consult OEM sources, dealer parts fiche, or the vehicle’s placard to validate the exact spec.
Wrap up
You can achieve safe, correct fitment by following a structured validation process.
Start with the OEM specs listed here, use the on-page calculator to explore trade-offs,
and confirm unknown values with OEM documentation. Stay conservative on offset and diameter
changes to reduce risk. When in doubt, have a qualified installer mount and validate the wheels.
If you want help running a specific wheel and tire comparison in the calculator,
provide the candidate rim diameter, width, offset, and tire size. I will guide you through validation.
Signed, an experienced technician and wheel fitment specialist.
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.
