2021 Audi A6 Wheel Interchange

2021 Audi A6 Wheel Fitment Guide | wheelinterchange.com

Known OEM Fitment For 2021 Audi A6

The following values are confirmed for at least one 2021 Audi A6 configuration. Wheel and tire sizes can vary by trim and package. If a value is unknown for your specific vehicle, verify it on your driver door jamb tire sticker, in the owner manual, and by using the on-page calculator to compare against your exact setup.

Note: The wheel size shown above (17x7.5 ET36) and the tire size shown above (245/45R19) do not describe a single matching set. They reflect values recorded for different OEM configurations. Your specific A6 may differ. Always confirm your exact factory size from the tire sticker and use the calculator to compare any new wheel or tire to your own OEM reference.

How To Use The Wheel Interchange Calculator

The calculator lets you compare a donor wheel and tire to your 2021 Audi A6. It also lets you try custom wheel and tire sizes and see how overall diameter and clearances change.

• Set Installed on to 2021 Audi A6, then select or enter your actual OEM tire size from your door sticker. This is your baseline.
• Choose Wheels from for the donor vehicle, or enter the donor wheel specs manually if you know them.
• Use Custom wheel size to test rim diameter, width, and offset changes. As you change width and offset, the tool shows inner clearance and outer poke changes relative to your baseline.
• Use Custom tire size to try different section widths and aspect ratios. When you change rim diameter, the tool updates tire diameter in the comparison so you can see speedometer impact.
• Review results for:
  • Overall tire diameter difference vs OEM. Aim to keep within a small percentage of your actual OEM size to protect ABS, traction control, and speedometer accuracy.
  • Inner clearance to strut and brake components.
  • Outer poke relative to the fender.
• If you plan spacers, add their thickness to the offset change in the calculator and confirm you will have sufficient hubcentric engagement and longer wheel bolts as needed.

Fitment Checklist Before You Buy

• Bolt pattern must be 5x112.
• Center bore must seat on a 66.5 mm hub. If the wheel bore is larger, use hub-centric rings sized to your wheel bore to 66.5 mm.
• Thread is M14 x 1.5. Verify you need wheel bolts, not nuts, and confirm the correct seat type for your wheels (ball vs conical) and proper bolt length, especially if using spacers.
• Wheel width and offset must clear brakes and suspension on the inside and the fender on the outside. Use the calculator to compare to your exact OEM setup and test-fit when possible.
• Tire overall diameter should stay close to your OEM door-sticker size to maintain speedometer and safety system accuracy.
• Brake caliper clearance: confirm spoke and barrel clearance on the actual car before driving.
• Load and speed rating: tires must meet or exceed the OEM ratings listed on your tire sticker.
• TPMS: your A6 may be direct-sensor or indirect. Plan accordingly for sensors or system reset.
• Aftermarket wheel torque spec and hardware must follow Audi and wheel manufacturer guidance. Do not guess torque values.

Plus Sizing And Common Upgrades

Many owners explore larger diameters and wider tires. What fits depends on your exact trim, brakes, suspension, and alignment. Use your door-sticker size as the baseline in the calculator and evaluate diameter change, inner clearance, and poke before buying.

If your door sticker shows 245/45R19, its approximate diameter is about 27.7 in. Examples below are for illustration only to show how to keep diameter similar. They are not guaranteed to fit your A6 without verification.

• Same rim diameter example: 255/40R19 is slightly smaller in diameter. Check fender clearance and load rating.
• Plus-one tire example: 245/40R20 keeps diameter close. Wheel width and offset must be verified for brake and fender clearance.
• Square vs staggered: A square setup simplifies rotation. Staggered can affect handling balance and tire rotation options.

Always verify with the calculator against your actual OEM size and confirm brake clearance and fender room with a physical test-fit.

Installation Tips

• Park on level ground, engage parking brake, and use wheel chocks.
• Use proper jacking points and support the car with jack stands. Do not rely on a jack alone.
• Clean hub faces and wheel mounting pads. Remove rust and debris to prevent vibration.
• If using hub-centric rings, install them fully seated on the wheel before mounting.
• Hand start all wheel bolts to avoid cross-threading. Tighten in a star pattern.
• Use a calibrated torque wrench and the torque specification from your Audi owner manual. Do not use impact guns to final-torque.
• Re-torque after 50 to 100 miles of driving.
• Initialize or relearn TPMS per your vehicle settings or with appropriate tools if sensors were changed.
• If you changed wheel width or offset significantly, have alignment checked to protect tires and handling.

Tools And Helpful Supplies

• 1/2 inch drive torque wrench: Search on Amazon
• Wheel hanger guide pin M14 x 1.5 for Audi wheel bolts: Search on Amazon
• Hub-centric rings 66.5 mm to your wheel bore: Search on Amazon
• M14 x 1.5 wheel bolts, verify seat type and length: Search on Amazon

FAQs

• Will 5x112 wheels from another Audi fit my 2021 A6?

  Only if they also have a center bore that fits a 66.5 mm hub or use correct hub-centric rings, an offset and width that clear your brakes and fenders, and compatible hardware. Always compare in the calculator and test-fit.

• Do I need hub-centric rings with aftermarket wheels?

  If the wheel center bore is larger than 66.5 mm, yes. Use rings sized from your wheel bore down to 66.5 mm so the wheel is hub-centered and runs true.

• What hardware does the A6 use?

  The thread is M14 x 1.5. Many Audi models use wheel bolts rather than studs and nuts, but check your car. Confirm the correct seat type and bolt length for your wheels, especially if spacers are installed.

• What offset range can I run?

  There is no single number because it depends on wheel width, brake package, and suspension. Use your OEM setup as the baseline in the calculator. Ensure inner clearance is safe and outer poke remains within the fender. Test-fit whenever possible.

• Can I install 19 inch or 20 inch wheels?

  Some trims may support larger diameters, but this varies. Keep overall tire diameter close to your OEM door-sticker size, verify brake and fender clearance with the calculator, and confirm load and speed ratings before purchase.

• Will I need new TPMS sensors?

  It depends on whether your specific A6 uses direct sensors in the wheels or an indirect system. Check your instrument cluster or owner manual. If direct, you will need compatible sensors and may need programming. If indirect, you will usually reset the system in the vehicle settings after installation.

• What torque should I use on the wheel bolts?

  Refer to your owner manual or Audi service information for the exact torque. Do not guess. Use a torque wrench and tighten in a star pattern, then re-torque after 50 to 100 miles.

• Do spacers require different bolts?

  Yes. If you add spacers, you typically need longer, correct-seat M14 x 1.5 bolts to maintain proper thread engagement. Spacers must be high quality and hub-centric. Re-check hub engagement and clearances in the calculator.