What Is the Bolt Pattern on a 2008 Audi A4?

The bolt pattern on a 2008 Audi A4 is 5×112, meaning the wheel uses five lug bolts spaced on a 112 mm pitch circle diameter. This pattern applies to virtually all standard 2008 A4 models sold in North America and Europe, including most sedan, Avant (wagon), and Quattro variants.

Understanding the 5×112 Bolt Pattern on the 2008 Audi A4

For owners considering new wheels, winter rims, or aftermarket upgrades, knowing the exact bolt pattern is critical for safety, handling, and proper fitment. The 2008 Audi A4 (B7 generation, including late-production models overlapping with the B8 changeover) uses a 5×112 pattern that aligns with most modern Audi and many Volkswagen models, making cross-compatibility easier than with some older generations.

Key Wheel Fitment Specs for the 2008 Audi A4

While bolt pattern is the most commonly asked specification, safe wheel selection also depends on several related dimensions. Together, these measurements determine if a wheel will mount correctly, clear the brakes, and maintain acceptable driving characteristics.

Core Wheel Specifications

The following list outlines the main factory-style wheel specifications for most 2008 Audi A4 models, which help you choose compatible OEM or aftermarket wheels.

• Bolt pattern: 5×112 (5 lug bolts on a 112 mm circle)
• Center bore (hub bore): 57.1 mm
• Typical OEM wheel sizes: 16″, 17″, or 18″ diameter (depending on trim and package)
• Common OEM widths: 7.0J to 8.0J
• Typical OEM offset (ET): roughly ET35–ET45 (varies by wheel design and size)
• Lug type: Lug bolts (not studs and nuts), usually M14 x 1.5

Taken together, these figures give a more complete picture of what will fit the 2008 A4 safely and without modification, though exact limits can vary depending on suspension setup and brake size.

How the 5×112 Pattern Compares to Other Audi Models

Because Audi has progressively standardized its wheel patterns, the 5×112 layout on the 2008 A4 often matches other models from similar years, improving parts availability and rim-sharing options.

The following list highlights how the A4’s bolt pattern lines up with similar vehicles in the Audi family.

• Most mid-2000s to late-2010s Audi A4, A5, A6, A3 (certain years), and Q-series models also use 5×112.
• Many Volkswagen models (like the Passat and some Golf/GTI generations) share the 5×112 pattern, though center bore and offset can differ.
• Earlier Audi models and some performance variants may use different offsets or wheel widths but typically retain the 5×112 layout in this era.
• The shared pattern broadens the pool of compatible OEM and aftermarket wheels, but hub bore and offset must still be checked.

This broader compatibility makes it easier to source wheels, but it does not remove the need to confirm complete fitment specifications before purchase or installation.

Why Bolt Pattern Matters for Safety and Performance

The bolt pattern is more than just a number on a spec sheet; it directly affects how securely the wheel mounts to the hub and how the car behaves on the road. Incorrect fitment can lead to vibration, premature wear, or even dangerous failures.

Risks of Using the Wrong Bolt Pattern or Poor Fitment

When the pattern or related dimensions don’t match, the wheel may not seat correctly against the hub, compromising safety and driving stability. Understanding the potential consequences helps highlight why confirming specifications is essential.

• Improper seating: Mis-matched bolt patterns or incorrect hub bore can prevent the wheel from sitting flush, leading to wobble or vibration.
• Uneven load on bolts: Ovaling the holes or forcing a misfit pattern can stress lug bolts, risking loosening or breakage.
• Interference issues: Incorrect offset or width may cause the wheel or tire to rub on suspension components or fenders.
• Handling changes: Significant deviations in offset or width can alter steering feel, tracking, and suspension geometry.
• Inspection and insurance concerns: Obvious non-standard, unsafe fitment can cause issues at inspections or after accidents.

These risks underscore why confirming the 5×112 pattern and related specs is vital before fitting any non-original wheels to a 2008 Audi A4.

How to Confirm the Bolt Pattern on Your Specific Car

Although the 5×112 specification is widely consistent for 2008 Audi A4 models, owners sometimes encounter mixed information, especially on cars near a model-year change or with aftermarket components. Verifying your exact setup can avoid costly mistakes.

Practical Ways to Double-Check Fitment

Drivers can rely on more than just online data: a combination of physical checks and official documentation will provide the most reliable confirmation of bolt pattern and related dimensions.

• Owner’s manual: Check the wheels and tires section for factory specifications, including bolt pattern and recommended sizes.
• Inside the fuel filler door or driver’s door jamb: Some markets include tire and wheel size information on the sticker, useful for confirming original fitment.
• Existing wheel markings: Many OEM wheels have size and offset (e.g., 7.5Jx17 ET45) stamped on the inside of the rim.
• Measure the pattern: A wheel or tire shop can quickly verify that your car uses a 5×112 layout and check hub bore and offset while the wheel is off.
• Check VIN-based data: Dealers or specialist parts databases can decode your VIN to identify original wheel specifications.

Combining these methods provides strong confirmation that your car matches the standard 5×112 pattern and identifies any changes from previous owners.

Summary

The 2008 Audi A4 uses a 5×112 bolt pattern, with a 57.1 mm center bore and typically ET35–ET45 offsets on factory wheels, making it broadly compatible with many Audi and Volkswagen rims from the same era. While this shared standard simplifies sourcing new or used wheels, owners should always verify the full set of fitment details—bolt pattern, center bore, wheel width, diameter, and offset—before buying or installing new wheels to ensure proper fit, safety, and preserved handling characteristics.

What is the 4×100 bolt pattern?

A 4×100 bolt pattern means a wheel has four lug holes arranged in a circle with a diameter of 100 millimeters. This pattern is very common on many compact and subcompact cars from various manufacturers, such as Honda, Toyota, and Mazda. The measurement refers to the number of lug holes (4) and the diameter (100mm) of the imaginary circle connecting the center of those holes. 
What 4×100 means

• 4: There are four bolt holes (lug holes) on the wheel.
• 100: The distance between the center of the bolt holes forms a circle with a 100-millimeter diameter. This is also referred to as the Pitch Circle Diameter (PCD). 

How to measure

• For a 4-lug pattern, you can measure the distance from the center of one hole directly across to the center of the opposite hole. 
• The 4×100 pattern is approximately equal to 4×3.94 inches. 

Common vehicles with this pattern

• This pattern is found on a wide range of vehicles, particularly compact cars. 
• Examples include many models from Honda, Toyota, Mazda, Hyundai, Kia, and Nissan. 
• It is also common on some European cars from brands like Opel, Citroën, and Peugeot. 

What bolt pattern is the Audi A4 2008?

Every generation of Audi A4 Quattro comes with a 5×112 bolt pattern. While that’s not the most popular bolt pattern on American-made rides, it’s a favorite among German luxury automotive manufacturers. That means you can find this bolt pattern on many five-lug luxury vehicles, just like your A4 Quattro.

What bolt pattern is the Audi A4?

The Audi A4 has a 5×112 bolt pattern for all generations. This means there are five lug bolts arranged in a circle with a diameter of 112 millimeters. It also has a 66.5 mm center bore, which is the size of the center hole on the wheel that fits over the vehicle’s hub.
 
This video explains the bolt pattern and other wheel specifications for Audi A4 and other models: 1mthreepiece.usYouTube · Oct 23, 2024

• Bolt Pattern: 5×112 (five bolts in a 112mm circle) 
• Center Bore: 66.5 mm (this is the size of the center hole on the wheel that fits over the hub) 
• Lug Bolts: The A4 uses M14 lug bolts. 

This video explains how to identify the bolt pattern of a wheel: 49sDeutsche Auto PartsYouTube · Jan 30, 2020

What Audi has a 5×130 bolt pattern?

22″ W627 Style Wheels For Porsche Cayenne and Audi Q7 with 5×130 bolt pattern Up to 2015 on the Q7.