Audi S6 Tires

Audi S6 uses nine listed tire sizes across the years covered here: 215/50R15 and 225/50R16 for 1995, 255/40R17 for 2002-2003, 255/40R18 and 265/35R19 for 2007-2011, 255/40R19 and 255/35R20 for 2013-2017, 255/35R20 alone for 2018, and 255/40R20 plus 255/35R21 for 2020, with 255/35R21 continuing for 2021-2025. Each size matches the wheel diameter shown at the end of the size code, ranging from 15 inches to 21 inches.

The practical step is to identify the exact year and then verify the wheel diameter on the car itself, because several Audi S6 years have two listed fitments. A 19-inch tire will not substitute for a 20-inch wheel, even when the section width looks similar, so the final confirmation should always be the actual wheel currently fitted to the car.

On an Audi S6, 255/35R20 is a modern metric radial size. The 255 is the nominal section width in millimeters, the 35 is the aspect ratio, meaning the sidewall height is 35 percent of the section width, the R identifies radial construction, and the 20 is the required wheel diameter in inches. That size appears on Audi S6 models from 2013 through 2018, although 2013-2017 also show a 19-inch alternative.

That code matters because it describes both the tire's proportions and the wheel it must mount on. If your Audi S6 has 20-inch wheels, 255/35R20 preserves the lower-profile stance associated with that package; if the car has 19-inch wheels, the correct fitment is a different size even when the tread width remains close.

A 2007 Audi S6 has two tire sizes listed because that model year appears with two different wheel diameters: 255/40R18 for 18-inch wheels and 265/35R19 for 19-inch wheels. The split is a wheel-package difference rather than a change in construction type, since both listed sizes are radial tires.

The right way to choose between them is to inspect the wheel on the car and confirm its diameter before moving on to brand or tread choice. Matching the tire to the actual wheel is the essential first step, because the two sizes are not interchangeable despite both belonging to the same model year.

Audi S6 rim diameter varies widely across the years shown here. The range begins with 15-inch and 16-inch wheels in 1995, moves to 17-inch in 2002-2003, 18-inch and 19-inch in 2007-2011, 19-inch and 20-inch in 2013-2017, 20-inch alone in 2018, and 20-inch plus 21-inch in 2020 before settling on 21-inch from 2021 through 2025.

Because the Audi S6 spans several generations, wheel diameter is the quickest way to separate one fitment family from another. If the car is new to you or has had wheels changed in the past, confirm the actual wheel size before choosing a tire, especially on years where two diameters were offered side by side.

A 2014 Audi S6 has two listed fitments: 255/40R19 and 255/35R20. Both are radial sizes, and each matches a different wheel diameter, so the correct choice depends on whether the car carries 19-inch or 20-inch wheels. The section width is the same in both cases, but the aspect ratio and wheel diameter differ.

Start by reading the wheel diameter on the car or by checking the existing tire sidewall, then match that diameter exactly. Once the size is confirmed, you can compare available tire series and sidewall styles within that size rather than trying to choose between sizes that belong to different wheel packages.

Audi S6 tires are available here in more than one sidewall style. Blackwall appears throughout the range, while RWL and Redline options are offered in 255/35R20 and 255/40R19 through the Pro-Trac Street Pro III line.

For most Audi S6 owners seeking an original-looking modern performance presentation, Blackwall is the most straightforward visual choice. RWL or Redline sidewalls create a more custom appearance, so they are worth considering only if that visual change suits the specific build and era of your Audi S6.

The Audi S6 tire offerings listed here come from BFGoodrich, Michelin, Nitto, Pro-Trac, and Vredestein. Brand coverage varies by size, with some fitments having only one listed product and others offering several alternatives across multiple series.

That means the correct selection process starts with size, then narrows to brand and series within that fitment. If your Audi S6 uses a less common size in this range, you may have fewer brand choices than an owner running one of the more widely covered 19-inch or 20-inch applications.

Audi S6 tires here appear in several series, including Sprint Plus, g-Force Sport Comp 2, g-Force Comp 2 AS, Nitto NT555 G2, g-Force Phenom T/A, Michelin Pilot Sport, and Street Pro III. All are radial tires, but they represent different product families within the available size range rather than one single pattern repeated across every fitment.

The useful comparison is not only brand to brand, but also series to series within the exact size your Audi S6 requires. After you confirm wheel diameter and size, you can choose among the available series according to the look you want, the sidewall style offered, and how closely you want to match the character of your particular S6 generation.

An Audi S6 that spends long periods parked should be stored on clean, properly inflated tires and kept out of direct sunlight, ozone sources, and large temperature swings. A dry, enclosed space is preferable, and moving the car occasionally helps avoid prolonged flat-spotting on performance-oriented low-profile tires.

If the Audi S6 will sit for an extended period, keep the suspension unloaded as little as practical and avoid leaving the tires against damp concrete or contaminated surfaces. Collector-style care matters even on newer performance cars, because rubber ages from time, environment, and inactivity as much as from mileage.

Tires on an Audi S6 should be inspected regularly, not just when tread appears low. Check inflation, sidewall condition, tread wear pattern, and any signs of impact damage or aging at least every few months and before any longer drive, especially because many S6s are used seasonally or as low-mileage enthusiast cars.

Frequent inspections help catch problems that a high-performance sedan can amplify, such as inner-edge wear, uneven shoulder wear, or damage from potholes. If your Audi S6 has been parked for a while, make inspection part of the recommissioning routine rather than assuming the tires are ready simply because the car has seen limited use.

An Audi S6 tire should be replaced when age cracking, hardening, impact damage, belt-related irregularities, or persistent vibration appear, even if the tread still looks usable. Tread depth alone is not the full measure of serviceability on a collector-driven or low-mileage performance car, because rubber compound and internal condition matter just as much.

A practical rule is to treat calendar age and visible condition as seriously as miles. If an Audi S6 has spent years in storage, has unknown tire age, or shows signs of drying and stiffness, replacement is the prudent path before returning the car to regular road use.

These Audi S6 tires are modern radial products sized for public-road use when they are correctly matched to the car's wheel diameter and maintained in sound condition. The listed range covers 15-inch through 21-inch applications, so safety begins with using the exact size intended for the wheel on the car, not the size from a different year or package.

Roadworthiness also depends on the broader condition of the vehicle, including alignment, suspension, and wheel integrity. On a performance sedan like the Audi S6, mismatched sizing or neglected maintenance can affect stability and braking quickly, so tire choice should always be part of a full road-readiness check.

Before driving an Audi S6, inspect tire pressure, visible sidewall condition, tread wear, and any signs of puncture, impact damage, or abnormal wear. It is also wise to verify that all four tires match the wheel diameter and that the fitted size corresponds to one of the accepted Audi S6 sizes for that year and wheel package.

That quick inspection matters because the Audi S6 combines performance capability with relatively low-profile tires in many years. If the car has recently been acquired, has aftermarket wheels, or has been in storage, take extra time to confirm the existing setup rather than assuming the current tires are correct.

The appropriate speed for an Audi S6 on its tires is never higher than the condition of the tire, the state of the car, and the intended road use safely allow. Many of the listed Audi S6 fitments are modern ZR-designated radial sizes, but real-world caution still matters because age, storage history, inflation, and condition can reduce confidence long before the sidewall markings do.

For an enthusiast-driven Audi S6, the sensible approach is to build speed gradually only after the tires have been inspected, warmed in normal service, and shown no vibration or irregular behavior. Any older or long-stored set deserves especially conservative use until the full condition of the tires and chassis has been verified.