2020 Audi A3 Wheel Interchange

OEM wheel/tire sizes and fitment specs for the 2020 Audi A3.

2020 Audi A3 wheel fitment tl;dr

Keep 5x112, 57.1 mm center bore, and M14x1.5 hardware. Use the on-page calculator before you buy. Confirm your trim’s OEM wheel and tire sizes from the door jamb and owner’s manual. Stay hub-centric and avoid large offset changes without measurements.

Known OEM fitment for 2020 Audi A3

These values are confirmed for at least one 2020 A3 trim. Other trims or packages may differ. Do not assume identical specs across all versions.

Bolt pattern5x112
Center bore57.1 mm
Thread sizeM14 x 1.5
Rim diameter16 in
Rim width6.5 in
Wheel offset (ET)43 mm
Backspacing4.94 in
Tire size example225/45R17

Note: The listed 16 inch wheel and 225/45R17 tire indicate multiple OEM setups exist by trim or package. Verify your exact OEM size from the tire placard and OEM sources, then use the calculator for like-for-like comparisons.

Recommendation

Start from your actual OEM baseline

Read the tire placard on the driver door jamb and the wheel stamps. Record wheel diameter, width, and ET, plus current tire size. Use these as your “Installed on (your vehicle)” baseline in the calculator.

Match the critical interfaces

  • Bolt pattern must be 5x112.
  • Center bore should seat on 57.1 mm. If the new wheel bore is larger, plan hub-centric rings to 57.1 mm.
  • Thread is M14x1.5. The A3 typically uses lug bolts, not studs. Confirm seat type on your current bolts before reusing.

Change size methodically

  • Adjust custom wheel width and offset in small steps in the calculator.
  • Watch inner clearance to the strut and liner. Do not reduce clearance to a rub risk.
  • Watch outer “poke” relative to the fender edge. Keep it inside the arch for street use.
  • If changing rim diameter, set the new tire size so overall diameter stays near OEM. The calculator updates tire diameter as you change rim diameter.

Confirm with measurements

  • Measure current clearances at full lock and over bumps if possible.
  • Check brake caliper spoke clearance with a template or a test fit.

Impact

  • Offset changes move the wheel inboard or outward, altering scrub and bearing load.
  • More width can improve grip but tightens inner and outer clearances.
  • Overall tire diameter shifts speedometer and gearing feel. Keep it close to stock for daily use.
  • Larger diameter wheels often add weight and reduce ride compliance.
  • Hub-centric fit reduces vibration at highway speed.

Risks and gotchas

  • Mismatched center bore causes vibration without proper rings.
  • Wrong seat type on lug bolts can loosen under load. Verify ball vs cone seat visually or by part number.
  • Insufficient thread engagement is unsafe. Ensure full, clean engagement of M14x1.5 bolts. Replace stretched or corroded hardware.
  • Caliper or barrel contact can occur on some spoke designs even if diameter “fits.” Always test fit.
  • Large offset swings can cause inner liner rub or poke past the fender.
  • TPMS and tire load ratings must match your market and trim requirements.
  • Torque spec varies by model and market. Use the owner’s manual or OEM documentation for the correct value.

Next actions

Checklist

  • Confirm your OEM baseline from the door placard and wheel stamps.
  • Open the calculator on wheelinterchange.com and set your current wheel and tire sizes under “Installed on (your vehicle).”
  • Enter your candidate wheel under “Wheels from (donor vehicle)” or use “Custom wheel size.”
  • Adjust rim diameter and width. Set a matching tire size so overall diameter remains near OEM.
  • Review inner clearance, poke, and tire diameter change. Revise offset as needed to keep safe clearances.
  • Plan hub-centric rings to 57.1 mm if the new wheel bore is larger.
  • Verify lug bolt seat type and length, and torque to OEM spec.
  • Test fit one corner, spin by hand, check lock-to-lock, then road test carefully.

Helpful tools

How to confirm specs without guessing

If any value is unclear or varies by trim, compare with the calculator and cross-check:

  • Owner’s manual and tire placard for OE wheel and tire sizes.
  • OEM parts catalog for the exact ET and width by option code.
  • Wheel backside stamps for size and ET, and center bore marking.

When in doubt, prioritize hub-centric fit, hardware compatibility, and measured clearances. That keeps your 2020 Audi A3 safe and vibration free.

Wheel interchange calculator

Select Cars for Wheel Swap

Compare wheel compatibility between two vehicles

Wheels from (donor vehicle)

Installed on (your vehicle)