Most 2010 A4s use either 18-inch or 17-inch wheels. The most common factory sizes are 245/40R18 for 18-inch wheels and 225/50R17 for 17-inch wheels.
The question asks about the tire size for the 2010 Audi A4. This article outlines the typical stock sizes by wheel diameter, explains how to verify your exact size on a specific car, and offers guidance for replacements and winter tires.
Common stock tire sizes by wheel diameter
The following sizes were commonly equipped on US-market 2010 A4 models, categorized by wheel diameter. Always verify with the door jamb placard or owner’s manual, as variations exist by trim and market.
- 16-inch wheels: typically 205/55R16
- 17-inch wheels: typically 225/50R17, with 235/45R17 on some sport or higher-trim packages
- 18-inch wheels: typically 245/40R18
These sizes cover the majority of 2010 A4 configurations, but exact specifications can vary by trim level and regional market. Always confirm the exact size for your vehicle.
How to verify your exact tire size
To ensure you are using the correct size for replacement, check these sources on your vehicle:
- Sidewall markings on your current tires (for example, 245/40R18).
- The driver’s door jamb placard, which lists the recommended tire sizes for front and rear wheels.
- Your owner’s manual or the factory window sticker if the car is still in stock form.
Using this information helps you select tires that match load ratings, speed ratings, and overall vehicle dynamics.
Notes on replacements and considerations
When replacing tires, you may encounter options like run-flat tires or different aspect ratios. Mixing sizes between front and rear is generally not recommended unless specified by Audi or a tire professional. If you are changing wheel sizes (for example, moving from 17" to 18"), you’ll need corresponding tire sizes that preserve the overall rolling diameter to maintain speedometer accuracy and ABS/ESP performance.
In colder climates, many drivers opt for winter tires sized to the same specifications as their summer tires or to a recommended winter-tiber kit provided by Audi.
Summary
The 2010 Audi A4’s tire sizes depend on wheel choice and trim, with common factory configurations including 16-inch 205/55R16, 17-inch 225/50R17 or 235/45R17, and 18-inch 245/40R18. Always verify the exact size on the vehicle’s placard or tire sidewall before purchasing replacements.