The typical factory tire size for a 2017 Audi A4 with the common 18-inch wheels is 245/40R18. Tire sizes can vary by trim and market, so your exact size may differ depending on the wheel package your car came with.
Common tire sizes by wheel size
The following sizes map to the most frequently seen factory configurations for the 2017 A4, segmented by the wheel size installed on the vehicle. If your car has a different wheel option or market specification, the size may vary.
- 17-inch wheels: 225/50R17
- 18-inch wheels: 245/40R18
- 19-inch wheels: 255/35R19
These options cover the typical factory configurations for the 2017 A4 across common trims. If your vehicle has aftermarket wheels or a non-US market spec, the tire size may be different.
How to verify your exact tire size
To ensure you install the correct tires and maintain performance and safety, confirm the exact size installed on your car using these steps.
- Inspect the tire sidewall for the size printed on it (for example, P245/40R18).
- Check the driver’s door jamb placard or the fuel filler cap area for a tire size label that lists the recommended sizes.
- Consult the owner's manual or the vehicle’s sticker in the glove box for factory specifications.
- If you have aftermarket wheels, verify the wheel size and tire size recommended by the wheel manufacturer and Audi for clearance and load ratings.
- When in doubt, contact an Audi dealer or a tire professional with your VIN to confirm the exact factory spec for your car.
Knowing the exact size ensures proper fit, load rating, and speed rating, and helps you choose matching tires for balanced handling and wear.
Summary
The 2017 Audi A4 offered multiple tire sizes depending on wheel size and trim, with 18-inch wheels commonly using 245/40R18, 17-inch wheels often using 225/50R17, and 19-inch wheels using 255/35R19. Always verify the specific size on your own vehicle using the door placard, sidewall marking, or official documentation to ensure accuracy, especially if yours has aftermarket wheels or is a non-US market model.