What Is the Bolt Pattern on an Audi TT?

The bolt pattern on most modern Audi TT models is 5×112, meaning five wheel bolts spaced on a 112 mm circle. However, the pattern can differ on early first‑generation cars, so owners should always verify by model year and generation before buying wheels.

Understanding the Audi TT Bolt Pattern

The question “What is the bolt pattern on a TT?” usually refers to the Audi TT sports coupe and roadster. The bolt pattern (also called PCD – Pitch Circle Diameter) determines which wheels physically fit the car’s hubs. For the majority of second- and third-generation Audi TT models, as well as late first-generation cars, the pattern is 5×112. Earlier first‑generation TTs in some markets used a different pattern (5×100), which can cause confusion when shopping for aftermarket or used wheels.

Bolt Patterns by Audi TT Generation

To answer accurately, it is important to break down the bolt pattern by generation and approximate model years, because Audi has changed the specification over time.

First Generation (Typ 8N, ~1998–2006)

The first-generation Audi TT, introduced in Europe in 1998 and in North America for the 2000 model year, went through a key change in its wheel bolt pattern partway through its life cycle.

The following list summarizes the typical bolt patterns used on the first-generation TT by model years and markets. Exact changeover dates can vary slightly by region and production batch, so this should be treated as a strong guideline and not an absolute rule.

• Early 8N TT (approximately 1998–2002 in many markets): 5×100 bolt pattern on most models.
• Later 8N TT (approximately 2003–2006): transition to 5×112 bolt pattern on many versions, particularly in later years and on certain performance variants.
• Center bore: typically 57.1 mm.
• Wheel bolts: 5 bolts, usually M14×1.5 with a ball seat (verify for specific trim and aftermarket wheels).

Because this generation spans the shift from 5×100 to 5×112, owners of early TTs need to be especially careful; a quick visual count of five lugs is not enough—you must confirm the PCD either from documentation or by measurement.

Second Generation (Typ 8J, ~2006–2014)

The second-generation TT brought a more standardized wheel fitment, and for this range the bolt pattern is much more consistent globally.

The following list outlines the main wheel fitment details for the 8J TT, including performance variants like the TTS and TT RS, which generally share the base bolt pattern.

• All 8J TT / TTS / TT RS (coupe and roadster): 5×112 bolt pattern.
• Center bore: 57.1 mm on most factory hubs.
• Thread specification: M14×1.5 wheel bolts (ball seat OEM, though aftermarket wheels may use conical seats).
• Typical offsets (ET): commonly in the ET45–ET52 range from the factory, varying by wheel width and trim.

For nearly all second-generation TT models, referencing 5×112 is accurate, making wheel selection relatively straightforward compared with the earlier generation.

Third Generation (Typ 8S, ~2014–present)

The current third-generation Audi TT, including high-performance variants, maintains the now-standard Volkswagen Group compact performance car pattern.

The list below details the core wheel bolt specifications for the 8S TT range.

• All 8S TT / TTS / TT RS: 5×112 bolt pattern.
• Center bore: 57.1 mm on most models.
• Wheel bolts: 5× M14×1.5, generally ball seat for OEM wheels.
• Offsets (ET): generally ET40–ET52 range, depending on wheel width, engine, and brake package.

Thanks to this consistency, owners of third-generation TT models can usually cross-shop wheels designed for other recent VW/Audi vehicles that share the 5×112/57.1 mm hub standard, provided offset and brake clearance are checked.

How to Confirm Your Specific TT’s Bolt Pattern

Although the broader answer is “5×112 for most modern TTs,” verifying your individual car is essential—especially if you own an early first‑generation 8N model or a car that may have had hub or brake conversions.

The following methods give reliable ways to confirm the bolt pattern on a particular Audi TT before ordering wheels.

1. Check the owner’s manual: Many manuals list wheel and tire specifications, including PCD or a wheel part number you can cross-reference.
2. Inspect the OEM wheel: Factory wheels often have size and offset cast or stamped inside; part numbers can be looked up in Audi parts catalogs to confirm bolt pattern.
3. Use VIN-based lookup: An Audi dealer or a reputable online parts catalog can decode your VIN to show factory wheel specifications.
4. Measure the pattern directly: On a 5-lug hub, measure from the center of one bolt hole to the outer edge of the hole two positions away; compare the result to known PCDs (100 mm vs. 112 mm).
5. Consult a specialist shop: A wheel/tire shop familiar with Audi/VW platforms can quickly identify your bolt pattern and advise on proper fitment.

By following at least one of these methods—ideally two—you minimize the risk of ordering incompatible wheels or spacers, which can be costly and unsafe.

Why the Bolt Pattern Matters

Choosing wheels solely on design or diameter without considering the bolt pattern can lead to serious fitment and safety issues. The bolt pattern is one of several interlocking specifications that must be compatible with your Audi TT’s hubs.

The following points highlight the main reasons bolt pattern accuracy is so important when modifying or replacing wheels.

• Physical fitment: A wheel with the wrong PCD will either not go onto the hub or will sit misaligned, making proper tightening impossible.
• Safety and structural load: Incorrect bolt patterns or poorly designed adapters can put uneven stress on the fasteners and wheel, increasing the risk of failure.
• Vibration and ride quality: Even slight misalignment of the wheel on the hub can cause vibrations at speed, premature tire wear, and stress on suspension components.
• Brake and suspension clearance: Matching bolt pattern is only step one; the correct offset and diameter are also needed to clear calipers and avoid rubbing.
• Resale and serviceability: Sticking with the correct pattern (and ideally the standard center bore) makes future wheel changes and tire shop work more straightforward.

Treating the bolt pattern as a core safety specification—rather than just a sizing detail—helps ensure that any wheel upgrade improves the car rather than compromises it.

Using Adapters and Conversions

Some Audi TT owners, particularly those with early 5×100 cars or those seeking uncommon wheel designs, consider using adapters to change the effective bolt pattern. This can work but requires careful planning.

The list below outlines what owners should keep in mind before using adapters to change or space out the bolt pattern on a TT.

• Quality of adapters: Only use hub-centric, high-strength adapters from reputable manufacturers specifically rated for your vehicle’s weight and use.
• Added thickness: Adapters act like spacers, pushing the wheel outward; this effectively changes wheel offset and can cause rubbing if not calculated correctly.
• Stud/bolt conversion: Some adapters convert from wheel bolts to studs and nuts; torque specs and hardware quality become even more critical.
• Insurance and legality: In some regions, heavily modified wheel hardware can affect roadworthiness inspections or insurance coverage.
• Maintenance checks: Adapter setups should be re-torqued periodically and inspected for corrosion or loosening, especially on track-driven cars.

While adapters can open up more wheel choices, they add complexity and require exact calculations around offset, clearance, and hardware integrity to remain safe.

Key Takeaways for Audi TT Owners

For anyone looking to replace or upgrade wheels on an Audi TT, knowing the correct bolt pattern and related specifications is essential to getting a safe and proper fit.

The following summary points bring together the most practical information owners typically need.

• Most modern Audi TTs: Use a 5×112 bolt pattern (especially all 8J and 8S generations).
• Early first-generation TTs: Many were built with a 5×100 bolt pattern, so double-check before ordering wheels.
• Center bore: Typically 57.1 mm across TT generations, shared with many VW/Audi models.
• Wheel hardware: Usually M14×1.5 bolts with a ball seat for OEM wheels; confirm seat type when using aftermarket rims.
• Always verify: Use your VIN, manual, or direct measurement to confirm your specific car’s setup, especially if it has been modified.

Armed with this information, TT owners can choose wheels that not only fit correctly but also preserve handling, safety, and the car’s overall driving character.

Summary

Most Audi TT models—especially second- and third-generation cars—use a 5×112 bolt pattern, with a 57.1 mm center bore and M14×1.5 wheel bolts. Early first-generation 8N models, however, were often built with a 5×100 pattern, which makes verification by model year, VIN, or direct measurement crucial. Matching the correct bolt pattern and related specifications ensures safe, vibration-free wheel fitment and protects the handling dynamics that define the TT nameplate.