2020 Audi S4 Wheel Interchange

2020 Audi S4 Wheel Interchange, Fitment, and Upgrade Guide

Known OEM Fitment For 2020 Audi S4

The values below reflect a confirmed OEM configuration for the 2020 Audi S4. Some trims or option packages may differ. If your vehicle came with a different wheel size from the factory, confirm those specifics on your tire placard, owner’s manual, or by decoding your OEM wheel part number before purchasing.

Notes:

• Other factory packages may use different wheel sizes or offsets. Do not assume all 2020 S4s match these numbers.
• Match the bolt-seat style of your lug bolts to the wheel manufacturer’s requirement. If unsure, verify with the wheel maker or a dealer.

How To Use The Wheel Interchange Calculator

The Wheel Interchange Calculator on wheelinterchange.com lets you compare a donor wheel or custom setup against your 2020 Audi S4 to visualize clearance and size changes.

• Step 1 - Set your vehicle: Select Installed on as 2020 Audi S4 and confirm the OEM size shown matches your door placard or the table above.
• Step 2 - Choose a donor: Pick Wheels from a donor vehicle or enter a Custom wheel size with rim diameter, width, and offset. You can also set a Custom tire size by section width and aspect ratio.
• Step 3 - Review clearance: The tool shows inner clearance to suspension and outer poke toward the fender based on offset and width changes. Pay attention to brake caliper clearance if moving to smaller diameter rims or different spoke designs.
• Step 4 - Check tire diameter: Changing rim diameter updates the tire’s overall diameter in the comparison. Keep total diameter close to stock to help maintain speedometer accuracy and proper ABS/ESC operation.
• Step 5 - Iterate: Adjust width, offset, and tire profile until the results show acceptable inner clearance, no excessive poke, and an overall diameter near stock.

Always confirm final choices with OEM sources and, when possible, a physical test fit before driving.

Fitment Checklist Before You Buy

• Bolt pattern: 5x112 must match exactly.
• Center bore: 66.5 mm hub bore is required for hub-centric fit. If an aftermarket wheel has a larger bore, use quality hub-centric rings sized to 66.5 mm.
• Thread size: M14 x 1.5. Verify proper bolt length and seat type for the wheel. Do not mix seat styles.
• Offset and width: Use the calculator to confirm inner clearance to suspension and outer position relative to the fender. Excessive poke may cause rubbing.
• Brake clearance: Verify spoke and barrel clearance over S4 brake calipers, especially with smaller diameter or concave designs.
• Overall tire diameter: Keep near stock to reduce speedometer and odometer error. Use the calculator’s diameter comparison.
• Load and speed rating: Tires and wheels must meet or exceed the S4’s OEM ratings. Check sidewall and wheel manufacturer documentation.
• TPMS: The 2020 S4 may use different TPMS strategies depending on market. Check your owner’s manual and plan to transfer sensors or perform relearn as required.
• Spacers and hardware: If using spacers, confirm hub-centric design and proper extended hardware. Recalculate effective offset in the calculator.
• OEM verification: Cross-check with the door placard, owner’s manual, and OEM part numbers for your exact trim.

Plus Sizing And Common Upgrades

Owners often consider plus sizing for appearance and handling. The S4 platform commonly moves from the factory 18 inch wheel to a larger diameter. Specific tire sizes and offsets vary by wheel design and suspension setup, so do not assume one-size-fits-all.

• Plus-one: 19 inch upgrades are popular. Use the calculator to keep overall tire diameter close to stock and to verify inner and outer clearances.
• Plus-two: 20 inch options are more appearance-focused. Confirm fender clearance under compression and steering lock, and ensure the tire load index remains sufficient.
• Wider wheels or tires: Wider setups can improve grip but require careful attention to offset and fender clearance. Test fit when possible.
• Winter downsizing: If considering a winter setup, confirm brake caliper clearance before moving to smaller diameters.

Because offset and tire choices vary by brand and model, validate your selection in the calculator and against OEM sources for your exact trim and brake package.

Installation Tips

• Work on a cool vehicle parked on level ground. Chock wheels and use proper jack stands rated for the vehicle weight.
• Clean the hub face and wheel mounting pad to remove rust and debris. A clean metal-to-metal contact reduces vibration.
• If the aftermarket wheel has a larger center bore, install correct hub-centric rings for a snug fit on the 66.5 mm hub.
• Match lug bolt seat type to the wheel. Do not lubricate lug bolt threads unless an OEM procedure specifies it, as it changes torque values.
• Hand start all bolts, snug in a star pattern, then torque in a star pattern to the OEM spec from your owner’s manual after setting the vehicle on the ground.
• Re-torque after 50 to 100 miles of driving.
• Verify tire pressure to the door placard and perform any TPMS relearn procedure specified by Audi.

Tools And Helpful Supplies

• 1/2 inch drive torque wrench
• Wheel hanger guide pin M14 x 1.5
• 66.5 mm hub-centric rings
• Tire pressure gauge

FAQs

• What is the bolt pattern on the 2020 Audi S4?

  5x112.

• What center bore does the 2020 S4 use?

  66.5 mm. Use hub-centric rings if your aftermarket wheels have a larger bore.

• What is the OEM thread size?

  M14 x 1.5. Verify bolt length and seat style with your wheel supplier.

• What offset is stock on my S4?

  The listed OEM example is ET40 with an 18x8 wheel. Other trims or packages may differ. Check your door placard, owner’s manual, or OEM wheel part number and confirm in the calculator.

• Will 19 inch wheels fit my 2020 S4?

  Many owners upgrade to 19 inch wheels, but final fit depends on wheel width, offset, spoke design, and tire size. Use the calculator to keep overall diameter close to stock and ensure inner and outer clearance, then verify brake caliper clearance and fender room.

• Do I need spacers?

  Not if the wheel’s offset and design clear brakes and suspension. If spacers are used, choose hub-centric spacers and confirm longer hardware and effective offset in the calculator.

• What tire diameter difference is acceptable?

  Keep overall diameter close to stock to minimize speedometer error and maintain proper ABS and stability control operation. Use the calculator to compare total diameters before you buy.

• How do I handle TPMS when changing wheels?

  TPMS strategy may vary by market. Check your owner’s manual. Some setups require transferring sensors or performing a relearn after setting the correct tire pressures.

• Can I use wheels from another Audi or VW with 5x112?

  Possibly, but you must match bolt pattern, center bore or hub rings, seat type, brake clearance, load rating, and a suitable offset. Always verify with the calculator and a test fit.

Use the on-page calculator at wheelinterchange.com along with your owner’s manual and OEM documentation to confirm the exact specs for your 2020 Audi S4 before purchasing or installing wheels and tires.