2020 Audi A5 Wheel Interchange

OEM wheel/tire sizes and fitment specs for the 2020 Audi A5.

2020 Audi A5 Wheel Fitment Guide | wheelinterchange.com

tl;dr

Start with the known factory baseline below. Match 5x112, 66.5 mm center bore, and M14 x 1.5 threads. Use the on-page calculator to compare donor wheels to your 2020 Audi A5. Keep overall tire diameter close to stock. Confirm caliper and fender clearance before driving. If the center bore is larger, use hub-centric rings. Re-torque to the Audi spec from your manual after a short shakedown.

Recommendation

I approach A5 fitment as a sequence. Establish the baseline. Compare options in the calculator. Verify clearance on the car. Then install with proper hardware.

Known OEM baseline for 2020 Audi A5

Factory specs can vary by trim and package. Use this as a starting point and confirm against your door jamb label and the owner’s manual.

Bolt pattern5x112
Center bore66.5 mm
Thread sizeM14 x 1.5
OEM rim diameter17 in
OEM rim width7.5 in
OEM wheel offset (ET)29 mm
Backspacing4.89 in
OEM tire size225/50R17

How to use the calculator here

  • Set Installed on to 2020 Audi A5.
  • Set Wheels from to your donor vehicle or aftermarket option.
  • Use Custom wheel size and Custom tire size to test diameter, width, and offset changes.
  • Watch the inner and outer clearance changes. The tool updates tire diameter when rim diameter changes.
  • Keep the overall tire diameter near stock to preserve speedometer and systems behavior.

Hardware and hub fit

  • Center bore must be 66.5 mm or larger. Larger bores need correct hub-centric rings.
  • Thread size is M14 x 1.5. Match fastener thread and seat type to the wheel design.
  • Bolt pattern must be 5x112. Adapters change geometry and add risk. Avoid unless you have measured thoroughly.

Impact

Wheel width and offset change clearance and handling feel.

  • More positive offset moves the wheel inward. Inner clearance to strut and liners reduces.
  • Less positive offset pushes outward. Fender and bumper lip clearance reduces.
  • Wider wheels stretch inward and outward. Check both sides in the calculator, then on the car.
  • Tire diameter changes speedometer reading and effective gearing. The calculator displays the difference.

Centering on the hub reduces vibration. Correct fastener seat prevents loosening and damage. Proper torque protects the hub and brake rotor.

Risks

  • Brake caliper clearance. Some packages need more barrel clearance. Test fit and rotate by hand.
  • Fender contact over bumps. Outer poke plus tall tires can rub liners and lips.
  • Incorrect center bore. Running off-center causes vibration and bearing wear.
  • Wrong fastener seat type. Cone vs ball seats must match the wheel design.
  • TPMS differences. The system type can vary by market and trim. Check your manual.
  • Speedometer error. Large diameter changes can affect ABS and stability logic.

Next actions

Checklist

  • Confirm your baseline against the door label and owner’s manual.
  • In the calculator, set Installed on to 2020 Audi A5.
  • Enter the donor wheel and tire, or use Custom sizes.
  • Review inner and outer clearance. Aim for visible space to calipers, struts, and fenders.
  • Check tire diameter difference shown by the tool. Keep it close to stock.
  • Verify bolt pattern 5x112, center bore 66.5 mm, and M14 x 1.5 threads.
  • Select matching fastener seat type for your wheels.
  • If center bore is larger, order the correct hub-centric rings.
  • Test fit every wheel. Spin by hand and turn lock to lock.
  • Torque to the Audi spec from your manual. Re-torque after a short drive.

Helpful tools

Gotchas: brake balance weights can hit tight barrels. Valve stem and TPMS placement may foul large calipers. Wheel caps can interfere with hub noses. Check all of it during test fit.

If any spec is unknown or varies on your trim, use the calculator here and confirm against the owner’s manual and OEM parts catalog. That keeps the fitment safe and predictable.

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