2004 Audi A4 Wheel Fitment and Interchange Guide | wheelinterchange.com

tl;dr

Your 2004 Audi A4 uses a 5x112 bolt pattern, 57.1 mm center bore, and M14 x 1.5 wheel bolts. Known OEM examples on this page show a 17x7.5 ET45 wheel with 5.52 in backspacing, and a 205/55R16 tire size. Trims and packages varied, so confirm your exact placard size, then use the on-page calculator to compare any donor wheel and tire.

Recommendation

Start from your door jamb tire placard or OEM documentation. Use that as the baseline in the calculator. Compare any donor wheel by entering its size and offset, then check the clearance changes. Keep the offset and overall tire diameter close to your baseline. If an aftermarket wheel has a larger center bore than 57.1 mm, use hub-centric rings. Always use M14 x 1.5 hardware that matches your wheel design and correct length. Test fit on the car, front and rear, before mounting tires or committing to a set.

Impact

• Offset and width affect inner clearance to strut and outer poke to the fender. The calculator will show both changes in millimeters.
• Diameter changes alter ride height and speedometer. The calculator updates tire diameter as you change rim size and aspect ratio.
• Backspacing of 5.52 in on the example wheel is consistent with ET45 on 7.5 in width. Moving far from this changes bearing load and steering feel.
• Larger brakes or calipers may need more spoke clearance. Check visually and rotate the wheel through a full turn during test fit.

Risks

• Rubbing on struts or liners if inner clearance is reduced too much.
• Fender contact on compression if outer poke increases too much.
• Vibration if the wheel is not hub-centric to 57.1 mm or if rings are missing.
• Hardware issues if bolt length or seat style does not match the wheel. Verify with the seller or manufacturer.
• Speedometer and ABS behavior can be affected if tire diameter deviates significantly or differs front to rear.

Next actions

• Confirm baseline: read the driver door placard and your owner manual. If your car shows 16 inch or 17 inch, use that exact size in the calculator as “Installed on”. The examples above reflect trims that varied.
• Open the calculator:
  • Set “Installed on (your vehicle)” to your placard wheel and tire.
  • Set “Wheels from (donor vehicle)” to the donor’s sizes or enter a custom wheel size and custom tire size.
  • Review inner clearance change and outer poke change. Aim to keep both changes small.
• Check the hub: verify 57.1 mm center bore. If your wheel bore is larger, plan hub-centric rings sized 57.1 to your wheel’s bore.
• Plan hardware: M14 x 1.5 bolts, correct seat type and length for your wheel. Do not reuse hardware that does not match.
• Test fit: bolt a front and rear with no tire rub, spin by hand, turn lock to lock, compress suspension if possible.
• Install: torque in a star pattern using your vehicle’s specified torque from OEM sources. Recheck torque after driving.

Helpful tools

• 1/2 inch drive torque wrench
• M14 x 1.5 wheel bolts verify seat type and length with your wheel
• 57.1 hub-centric rings size the other side to your wheel bore
• Digital caliper for quick measurements

Gotchas

• The mixed data on this page reflects real trim differences in 2004. Always defer to your placard and OEM sources.
• Do not assume donor tire load ratings match. Verify load index meets or exceeds your placard.
• If running staggered widths, keep overall diameters matched side to side and front to rear unless your OEM spec says otherwise.