2026 Audi A6 Bolt Pattern & Tire Size
The 2026 Audi A6 OEM tire size, bolt pattern, and wheel specifications are listed below. All data is based on industry-standard OEM reference specifications.
The 2026 Audi A6 has a 5x112 bolt pattern, an OEM tire size of 225/55R18, and a 66.5mm center bore.
Other years of the Audi A6
2026 Audi A6 Engine & Trim Levels
Detailed tire and wheel breakdown for the 2026 Audi A6
Tire geometry â 225/55R18
The 225/55R18 fitted to the 2026 Audi A6 has a section width of 225mm and an aspect ratio of 55%, mounted on a 18-inch rim. That gives a sidewall height of 123.8mm (4.87") and an overall outside diameter of 704.7mm (27.74"). At highway speed this tire completes roughly 452 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2026 Audi A6 while keeping the speedometer accurate, target a 235/47R19 (plus-one). For a softer ride or winter setup, a 215/63R17 (minus-one) keeps the overall diameter within Âą3% of stock, which is the industry tolerance for ABS and stability control to stay calibrated.
Wheel fitment specs
The 2026 Audi A6 uses a 5x112 bolt pattern with a 66.5mm hub bore. Safe rim width range for the OEM tire is 7.5J â 8.5J, and offsets in the ET34 â ET44 window will clear suspension and fender without rubbing on most setups.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2026 Audi A6 is printed on the driver-side door jamb sticker â always defer to that value, not to the maximum pressure printed on the tire sidewall. Check pressure monthly and before long trips; under-inflation by 20% can reduce tread life by 25%.
OEM Wheel & Tire Specs
| Engine & Trim | Tire Size | Rim Size | Offset (ET) | |
|---|---|---|---|---|
| 40 TDI / 45 TFSI | 18x8.0J | ET39 | ||
| 50 TDI / 55 TFSI V6 Quattro | 19x8.5J | ET40 |
Frequently Asked Questions
What tire size does the 2026 Audi A6 40 TDI / 45 TFSI use?
The 2026 Audi A6 40 TDI / 45 TFSI uses 225/55R18 tires as standard equipment.
What tire size does the 2026 Audi A6 50 TDI / 55 TFSI V6 Quattro use?
The 2026 Audi A6 50 TDI / 55 TFSI V6 Quattro uses 245/45R19 tires as standard equipment.
What is the bolt pattern of the 2026 Audi A6?
The 2026 Audi A6 has a 5x112 bolt pattern with a center bore of 66.5mm.
What is the wheel offset of the 2026 Audi A6?
The 2026 Audi A6 has a wheel offset of ET39.
Other Vehicles with 5x112 Bolt Pattern
The following vehicles share the same 5x112 bolt pattern as the 2026 Audi A6, making wheel interchangeability possible (verify offset and center bore before swapping).