2019 Audi A4 Wheel Interchange

OEM wheel and tire fitment specs for the 2019 Audi A4, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.

Understanding Wheel Fitment for Your 2019 Audi A4

There's a common misconception that all wheels can be easily swapped between vehicles. You might think that if a wheel looks similar, it will fit. However, that’s not always the case, especially with a precise machine like the 2019 Audi A4.

Why Does It Seem True?

It’s easy to assume that visual similarities mean compatibility. Many DIY enthusiasts find themselves believing that if they can physically mount a wheel, it will function properly. After all, wheels come in various sizes and styles, and there are plenty of options available.

What Is True

The reality is that several specific measurements determine whether a wheel fits your Audi A4 correctly. For the 2019 model, here are the key OEM specifications:

  • Bolt pattern: 5x112
  • Center bore: 66.6 mm
  • Thread size: M14 x 1.5
  • Rim diameter: 18 inches
  • Rim width: 8.0 inches
  • Wheel offset: 40 mm
  • Backspacing: 5.57 inches
  • Tire section width: 225 mm
  • Tire aspect ratio: 50%
  • Tire rim diameter: 17 inches

These specifications are crucial for ensuring safety and performance. If you're unsure of any values, a reliable way to confirm fitment is by using an on-page calculator along with OEM sources.

Implications of Incorrect Fitment

Using incompatible wheels can lead to several issues. You could experience poor handling, increased tire wear, or even damage to your vehicle. In extreme cases, having the wrong fitment can present safety risks while driving. So, it’s essential to match the specifications closely.

Quick Tests for Compatibility

To ensure the wheels you're considering will fit your Audi A4, here are a few quick tests you can perform:

  • Check bolt pattern: Ensure it matches 5x112.
  • Measure the center bore: It should be 66.6 mm.
  • Verify thread size: Look for M14 x 1.5.
  • Confirm rim diameter and width: Should be 18 inches and 8.0 inches, respectively.
  • Calculate offset: Ideally, it should be around 40 mm.

If you’re making adjustments to your wheel size, the calculator on wheelinterchange.com can be a valuable tool for checking fitment with custom sizes.

Helpful Tools and Parts

Before you start your project, make sure you have the right tools. Here are some helpful links you might find useful:

With this knowledge, you should feel more confident about selecting the right wheels for your 2019 Audi A4. Remember, taking the time to ensure proper fitment will pay off in both safety and performance.

Find Wheels That Fit This 2019 Audi A4

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Specification
Wheels from
Installed on
Result (Click it)
Bolt Pattern
Bolt Pattern
The total number of bolt holes and the diameter of the circle they form.
-
5x112
Center Bore
Center Bore
The hole in the center of the wheel that fits over the vehicle’s hub.
-
66.6 mm
Thread Size
Thread Size
The size and spacing of the threads on the bolts or nuts that hold the wheel in place.
-
M14 x 1.5
Rim Diameter
Rim Diameter
The wheel diameter in inches that determines which tire sizes will fit.
-
18"
Rim Width
Rim Width
The distance between the inner edges of the wheel is measured in inches.
-
8.0"
Wheel Offset
Wheel Offset
How far the wheel sits inward or outward relative to the hub mounting surface.
-
40 mm
Backspacing
Backspacing
Shows how much space the wheel takes up toward the inside of the vehicle.
-
-
Wheel Fasteners
Wheel Fasteners
The type of hardware used to secure the wheel to the vehicle.
-
-

Nick Marchenko

Automotive Expert