Shop Exact-Fit 2021 Audi A6 Tires & Wheel Packages Guide
Browse compatible tires for the 2021 Audi A6 matched to 18-21" wheel diameters and 8-8.5" widths.
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2021 Audi A6 Wheel Fitment Specs: 18"–21" Rim Sizes, 8"–8.5" Widths & 5x112 PCD
Every aftermarket wheel shown above is pre-filtered for the 2021 Audi A6 (C9). By matching your 2021 Audi A6 lug pattern (5x112), compatible rim diameters (18, 19, 20, and 21 inch), and 8", 8.5" widths against inventory from 1AV, ADVANTI RACING, Black Rhino Hard Alloys, Black Rhino, KMC, Weld, you can choose custom rims with confidence or build a complete 2021 Audi A6 wheel and tire package.
| Specification | Verified Fitment Details |
|---|---|
| Vehicle & Year | 2021 Audi A6 (C9) |
| Trims Covered | 3.0 TFSi quattro MHEV |
| Bolt Pattern (PCD) | 5x112 |
| Supported Diameters | 18", 19", 20", 21" |
| Supported Widths | 8", 8.5" |
| Center Bore | 66.5 mm |
| Offset (ET) Range | ET39–ET43 |
| Verified Tire Sizes | 225/55ZR18 102Y XL, 245/45ZR19 102Y XL, 255/40ZR20 101Y XL, HL 255/35ZR21 101Y, 225/55R18 102H XL, 245/45ZR19 102W XL |
| Compatible Brands | 1AV, ADVANTI RACING, Black Rhino Hard Alloys, Black Rhino, KMC, Weld |
2021 Audi A6 Rim Sizes & Wheel Construction Guide
Popular wheel fitments include 18 inch wheels for 2021 Audi A6, 19 inch wheels for 2021 Audi A6, 20 inch wheels for 2021 Audi A6, 21 inch wheels for 2021 Audi A6 matched to 8"–8.5" widths and 5x112 bolt patterns. You can safely run cast alloy, flow-formed, or forged custom wheels from brands such as 1AV, ADVANTI RACING, Black Rhino Hard Alloys, Black Rhino, KMC, Weld whenever bolt pattern, center bore, offset, and load rating align. When stepping up in diameter on AWD drivetrains, keep overall tire rolling diameter matched front-to-rear.
2021 Audi A6 Wheel & Fitment FAQs
What is the exact wheel bolt pattern, hub bore, and lug specification for the 2021 Audi A6?
The 2021 Audi A6 is engineered with a 5x112 bolt pattern and a 66.5 mm center bore and accommodates wheel diameters of 18"–21" with rim widths of 8"–8.5". Installing hub-centric wheels guarantees zero highway vibrations.
Do different 2021 Audi A6 trims share the same wheel size and brake clearance?
Across 2021 Audi A6 trims (3.0 TFSi quattro MHEV), compatible wheels span 18"–21" in diameter and 8"–8.5" wide with offsets around ET39–ET43 (5x112 bolt pattern). Higher trims equipped with upgraded sport brakes require larger wheel diameters to clear the calipers.
What precautions are needed when changing wheel sizes on an AWD 2021 Audi A6?
On the AWD 2021 Audi A6, all four tires must maintain matching overall rolling diameters within 1% across 18"–21" wheel sizes (5x112 PCD) to prevent strain on the center differential.
What factory and plus-sized tire sizes fit the 2021 Audi A6?
Recorded compatible tire sizes for the 2021 Audi A6 include 225/55ZR18 102Y XL, 245/45ZR19 102Y XL, 255/40ZR20 101Y XL, HL 255/35ZR21 101Y, 225/55R18 102H XL on 18"–21" wheels. When building a package, our fitment engine confirms exact tire aspect ratios for your selected rim width.