2017 Audi A4 Wheel Interchange

2017 Audi A4 Wheel Fitment Guide | wheelinterchange.com

Known OEM Fitment For 2017 Audi A4

The values below are confirmed for at least one factory configuration of the 2017 Audi A4. Other trims or brake packages may differ. If any item on your car does not match, use the on-page calculator and confirm with your owner’s manual, the tire placard on the driver door jamb, or your Audi dealer before you buy.

Note: The wheel line shows an 18x8 ET40 wheel. The tire line shows a 225/50R17 tire. Audi offered multiple factory wheel and tire packages in 2017, so you may see 17 inch or 18 inch equipment from the factory. Match your current setup to the correct baseline in the calculator, then compare changes.

How To Use The Wheel Interchange Calculator

The calculator compares Wheels from a donor vehicle versus Installed on your 2017 Audi A4. It also lets you test a Custom wheel size and Custom tire size. Follow these steps:

• Set Installed on to 2017 Audi A4.
• If you know your current factory setup, choose a donor that matches it. If not, enter a Custom wheel of 18x8 ET40 or a Custom tire of 225/50R17 to mirror the known OEM references above. Pick the one that matches your trim.
• Adjust Custom wheel size. Change rim diameter, rim width, and offset to what you plan to install.
• Adjust Custom tire size. Change section width and aspect ratio. The calculator updates overall tire diameter automatically when you change rim diameter.
• Review the comparison. Watch inner clearance to the strut and spring perch, outer poke relative to the fender, brake caliper clearance, and ride height change from tire diameter.
• Aim to keep overall tire diameter within a small difference. Many installers target within 3 percent to help speedometer and ABS systems stay happy. Always verify real-world clearance on the car before driving.

Fitment Checklist Before You Buy

• Bolt pattern. Your Audi uses 5x112. Wheels must match 5x112 exactly.
• Center bore. Hub is 66.6 mm. A wheel with 66.6 mm will be hub-centric. A larger bore can work with proper hub-centric rings. A smaller bore will not fit.
• Thread size and hardware. Threads are M14 x 1.5. Audi uses lug bolts. Bolt length and seat style must match the wheel design. Verify seat type with the wheel manufacturer.
• Offset and width. Known reference is 18x8 ET40. If you choose a different width or offset, use the calculator to compare inner clearance to suspension and outer poke to the fender. Measure your car if you are near the limits or running aggressive tires.
• Brake caliper clearance. Spoke design matters. Test-fit a bare wheel over the front brakes before mounting tires.
• Tire diameter. Start from your actual OEM size shown on the door placard. Keep overall diameter close to stock to protect speedometer accuracy and avoid rubbing. Use the calculator to see diameter change.
• Load index and speed rating. New tires must meet or exceed the OEM ratings on your door placard.
• TPMS. The A4 may use different TPMS strategies by market and trim. Check your owner’s manual for sensor requirements and reset procedure.
• Suspension height. Lowering springs or adaptive dampers change clearance. Recheck fitment if the car is modified.
• OEM confirmation. Cross-check with the owner’s manual, door placard, and an Audi parts counter if any value is unclear.

Plus Sizing And Common Upgrades

Plus sizing increases wheel diameter while reducing tire sidewall to keep overall diameter similar. This can sharpen steering response but may reduce ride comfort and increase pothole risk.

• Identify your baseline. If your door placard shows 225/50R17, use that as the starting size in the calculator. If you already have 18x8 ET40 from the factory, start there.
• Use the calculator to try a plus-one or plus-two diameter. Adjust tire width and aspect ratio until overall diameter is close to stock.
• Check inner and outer clearance after every change. Wider tires often need different offsets to clear struts and fenders.
• Consider unsprung weight. Heavier wheel and tire combos can affect ride and braking.
• If you plan to rotate front to rear, keep the same sizes on all four corners.

Installation Tips

• Support the car safely on jack stands. Never rely on a jack alone.
• Clean the hub face and center pilot with a wire brush so the wheel sits flush. Remove any corrosion or old anti-seize.
• If the wheel center bore is larger than 66.6 mm, install the correct hub-centric rings to ensure true centering.
• Hand start all lug bolts to avoid cross-threading. Use a wheel hanger guide pin to support the wheel.
• Snug bolts in a star pattern, then torque to the factory specification listed in your owner’s manual using a calibrated torque wrench. Do not rely on an impact gun for final torque.
• After mounting, spin the wheel by hand to verify caliper and suspension clearance.
• Re-torque after 50 to 100 miles of driving.

Tools And Helpful Supplies

• 1/2 inch drive torque wrench
• M14x1.5 wheel hanger guide pin
• 66.6 mm hub-centric rings for aftermarket wheels with larger bores
• Tire pressure gauge

FAQs

• What is the bolt pattern on the 2017 Audi A4?

  5x112.

• What center bore does my A4 use?

  66.6 mm. Wheels with a larger bore can use hub-centric rings. Smaller bores will not fit.

• What lug hardware does it use?

  M14 x 1.5 lug bolts. Bolt length and seat style must match the wheel. Check your wheel manufacturer for the correct seat type.

• My car shows 225/50R17 on the door sticker. Can I run 18 inch wheels?

  Audi offered multiple OEM packages. The known reference includes an 18x8 ET40 wheel. Use the calculator to compare your 17 inch baseline to an 18 inch setup and verify clearance, diameter, and load ratings before buying.

• What offset should I choose?

  The known 8.0 inch wheel uses ET40. The best offset for your setup depends on wheel width, tire width, and brake package. Use the calculator to check inner and outer clearances and try to stay near the OEM reference unless you have measured room.

• Do I need hub-centric rings?

  Use rings only if the wheel’s center bore is larger than 66.6 mm. Choose rings that adapt from the wheel bore to 66.6 mm. If the wheel already has 66.6 mm, rings are not needed.

• How close should the new tire diameter be to stock?

  Keep overall diameter close to stock to protect speedometer accuracy and avoid rubbing. Many installers aim within about 3 percent, but always verify on-car clearance. Use the calculator to see the difference.