2017 Audi A7 Wheel Fitment Guide

Think of this page as a practical, safety-first fitment checklist for your 2017 Audi A7. I’ll start by clearing up a few common myths, then show you quick ways to verify a wheel or tire swap before you buy or bolt up.

Quick recap: known OEM fitment for 2017 Audi A7

These values reflect a common factory package on the 2017 A7. Some trims or option packages can differ. If your car’s sticker or manual shows something else, follow those values and use the calculator on this page to compare changes.

Misconception 1

Any 5x112 Audi wheel will fit your 2017 A7.

Why it seems true

Lots of Audi and VW models share the 5x112 pattern, so it feels interchangeable. Sellers often list “5x112 fits Audi” and that sounds convincing.

What is true

Bolt pattern is only one filter. You also need the right center bore, offset, brake clearance, load rating, and correct lug hardware style. For your A7, the hub is 66.6 mm. A wheel with a larger bore can work with hub-centric rings to 66.6 mm. A wheel with a smaller bore will not seat on the hub. Offset and width change clearance at the fender and the suspension. The thread size is M14 x 1.5 and the seat type depends on the wheel design, so match the seat type to the wheel manufacturer’s spec.

Implications

If the offset or width pushes the wheel too far out, the tire can rub fenders under load. If it sits too far in, it can rub the strut or control arm. A poor hub fit can cause vibration at highway speed. Wrong hardware seat type can loosen under load.

Quick tests

• Center bore check: confirm the wheel bore is 66.6 mm or larger with hub-centric rings to 66.6 mm.
• Hardware check: verify M14 x 1.5 threads and the correct seat style for the wheel.
• Clearance preview: use the on-page calculator to compare your stock 19x8.5 ET32 to the candidate wheel. Look at inner clearance and outer poke changes.

Misconception 2

Offset is confusing, and higher ET means the wheel sticks out more.

Why it seems true

ET is measured in millimeters and it is not intuitive. Listings throw around ET numbers without context.

What is true

Here is a simple mental model. Positive ET moves the wheel inward toward the suspension. Lower ET moves it outward toward the fender. Your baseline is ET32 on an 8.5 inch rim. Changing width also shifts both inner and outer edges, so think offset and width together.

Implications

A small ET drop can fill the fender nicely if there is clearance. Too much drop can poke and rub. A large ET increase can hit the strut or liner. Backspacing of 5.51 inches is another way to visualize how far inward the wheel sits.

Quick tests

• Rule of thumb: 5 mm of offset change moves the wheel face about 5 mm.
• Use the calculator: plug in your candidate width and offset. Check inner clearance change and outer poke change in millimeters.
• Cardboard gauge: tape a strip at the fender lip and measure gap to the current tire. Compare to the calculator’s predicted poke change.

Misconception 3

Rim diameter is what sets tire diameter.

Why it seems true

We talk about 19s or 20s a lot, so it feels like the whole tire grows with the rim size.

What is true

Tire diameter depends on section width and aspect ratio, not only rim diameter. Your OEM setup is 255/40R19. The 40 is the sidewall height percentage of 255 mm. If you move to a different rim diameter, an adjusted aspect ratio can keep overall tire diameter near stock.

Implications

Keeping overall diameter near stock helps speedometer accuracy, ABS, and ride quality. Large deviations can affect gearing feel and fender clearance.

Quick tests

• Calculator trick: change rim diameter and then adjust tire aspect ratio until overall diameter stays close to stock.
• Compare rolling diameter: the tool shows the percent difference and predicted speedometer error.

Using the Wheel Interchange Calculator on wheelinterchange.com

This page’s calculator lets you compare Wheels from a donor vehicle versus Installed on your vehicle. You can also enter a Custom wheel size and a Custom tire size. When you change rim diameter, the tool updates tire diameter in the comparison so you see speedometer impact.

• Start with stock: enter 19 x 8.5 ET32 and 255/40R19 for the A7 side.
• Enter the candidate wheel and tire on the donor side, or use Custom wheel size and Custom tire size.
• Review inner clearance and outer poke changes in millimeters. Look at overall tire diameter difference and speedometer change.
• If any trim-specific value on your car differs from the table, use your door jamb placard or owner’s manual data as the baseline and rerun the comparison.

Fitment safety notes

• Center bore: wheel must seat on a 66.6 mm hub. Larger bores are fine with quality hub-centric rings to 66.6 mm.
• Threads and seat: use M14 x 1.5 hardware with the correct seat type required by the wheel. Do not mix seat types.
• Torque: tighten to the OEM torque spec from your manual or service data. Re-check torque after a short drive.
• Load rating: confirm the wheel’s load rating meets or exceeds the A7’s axle load requirements.
• Brake clearance: verify inner barrel and spoke clearance over calipers. Some designs with the same size can still interfere.

Hands-on checks before you commit

• Test mount: place the candidate wheel without a tire on the front hub. Spin by hand to check caliper and knuckle clearance.
• Lock-to-lock: with the car on the ground, turn the steering from lock to lock. Listen and feel for any liner contact.
• Compression check: load the trunk with a few heavy items and drive over a gentle bump. Listen for rear fender contact.
• Vibration check: if you feel a shake after installation, confirm hub-centric rings and re-seat the wheel cleanly on the hub.

What varies by trim or package

Factory wheel designs and tire sizes can vary by trim or appearance package. If your door placard or owner manual lists different sizes than the table above, treat those as your baseline. Use the calculator to compare from your actual OEM size and offset. If you are unsure about your exact offset, many OEM wheels have ET stamped on the back of the spoke.

Useful tools for a clean install

• 1/2 inch drive torque wrench for accurate tightening.
• Wheel hanger guide pin M14 x 1.5 to support the wheel during install if your car uses lug bolts.
• 66.6 hub-centric rings when using wheels with larger center bores.
• Digital caliper to measure bores and clearances precisely.

Final take

The quick mental model is simple. Start from your known baseline of 19 x 8.5 ET32 with 255/40R19, 5x112, and a 66.6 mm hub. Use the calculator to see how a new width and offset change inner and outer clearances, then pick a tire that keeps overall diameter close. Confirm center bore fit, hardware type, and brake clearance, and you will land on a setup that feels factory-solid without surprises.