The 2020 Audi A6 Quattro sits in Audi’s modern luxury sport-sedan tradition, blending all-weather confidence with the sharper road manners buyers expect from a contemporary Quattro car. On this generation, wheel and tire choice plays a visible role in both stance and ride character because fitment spans 19-, 20-, and 21-inch combinations depending on trim. The primary fitments are all radial metric sizes: 245/45R19, 255/40R20, and 255/35R21. Available tire choices center on blackwall performance-oriented radials from BFGoodrich and Nitto. For an A6 owner, the key is confirming the exact sub-model and wheel diameter first, then choosing the tire that matches the car’s current setup and intended road use.
Which Tire Size Is Right for The 2020 Audi A6 Quattro
Three tire sizes apply to the 2020 Audi A6 Quattro, and the right one depends on the exact sub-model and wheel package. Most covered trims use either 245/45R19 or 255/40R20, while Prestige 3.0 models can also use 255/35R21. Because these sizes span three different rim diameters, the first step is confirming whether the car is on 19-, 20-, or 21-inch wheels before comparing tire options.
Fit(s): Premium 2.0, Premium 3.0, Premium Plus 2.0, Premium Plus 3.0, Prestige 2.0, and Prestige 3.0
Construction: Radial|Rim: 19 in
245/45R19 is a metric radial size where 245 identifies the nominal section width in millimeters, 45 is the aspect ratio, R denotes radial construction, and 19 is the rim diameter in inches. On the 2020 Audi A6 Quattro, this size is one of the core fitments and suits owners staying with a 19-inch wheel setup. Available choices include blackwall performance radials from BFGoodrich and Nitto, with series such as g-Force Comp 2 AS, g-Force Phenom T/A, and NT555 G2. This size is a practical choice when maintaining the car’s existing 19-inch wheel package is the priority.
Fit(s): Premium 2.0, Premium 3.0, Premium Plus 2.0, Premium Plus 3.0, Prestige 2.0, and Prestige 3.0
Construction: Radial|Rim: 20 in
255/40R20 is a metric radial size that uses a 255-millimeter nominal section width, a 40-series profile, radial construction, and a 20-inch rim. For the 2020 Audi A6 Quattro, it is a primary fitment shared across several sub-models that use the larger factory-style wheel package. Product selection in this size includes a blackwall BFGoodrich g-Force Phenom T/A, giving the size a distinctly performance-oriented character. This is the size to evaluate when the car already wears 20-inch wheels and the goal is to keep the same wheel diameter and general fitment profile.
255/35R21 is a metric radial size with a 255-millimeter nominal section width, a lower 35-series profile, radial construction, and a 21-inch rim diameter. On the 2020 Audi A6 Quattro, this size is tied to the Prestige 3.0 fitment range rather than the whole model line. The lower-profile format points the buyer toward wheel-confirmation and clearance awareness first, especially on cars that may have seen wheel or suspension changes. This size deserves a careful look when the car is equipped with 21-inch wheels and retaining that larger-diameter appearance matters.
Sub-model fitment is not completely uniform across the 2020 Audi A6 Quattro range. Most trims share the same two primary sizes, but Prestige 3.0 adds a 21-inch fitment, so confirming the exact sub-model and wheel package matters before selecting a tire.
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2020 Audi A6 Quattro Premium 2.0
The 2020 Audi A6 Quattro Premium 2.0 uses the 245/45R19 and 255/40R20 radial fitments. Tire selection starts with confirming whether the car is on 19-inch or 20-inch wheels, then comparing the available blackwall performance-oriented options in the correct size.
The 2020 Audi A6 Quattro Premium 3.0 shares the same 245/45R19 and 255/40R20 radial tire fitments. That makes wheel diameter the key checkpoint, especially if the car has been changed from its original wheel package at any point.
The 2020 Audi A6 Quattro Premium Plus 2.0 also uses 245/45R19 and 255/40R20 radial sizes. For this sub-model, the buying decision is less about alternate primary sizes and more about matching the tire to the car’s actual wheel setup and intended driving use.
The 2020 Audi A6 Quattro Premium Plus 3.0 carries the same two primary fitments: 245/45R19 and 255/40R20. Owners should verify the mounted wheel diameter first, then compare product details such as tire series, rim-width compatibility, and load specification where relevant.
The 2020 Audi A6 Quattro Prestige 2.0 stays with the 245/45R19 and 255/40R20 radial tire sizes. Selection is straightforward once the wheel diameter is confirmed, with the main choice centered on the available performance-style blackwall radials in the correct size.
The 2020 Audi A6 Quattro Prestige 3.0 has the broadest fitment range, using 245/45R19, 255/40R20, and 255/35R21 depending on wheel package. On this sub-model, confirming the actual wheel diameter is essential before comparing tires, because all three sizes use different rim diameters.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 2020 Audi A6 Quattro Tires for Sale
Available 2020 Audi A6 Quattro tire options focus on blackwall radial performance tires in 245/45R19 and 255/40R20. Brands include BFGoodrich and Nitto, with series such as g-Force Comp 2 AS, g-Force Phenom T/A, and NT555 G2 that give buyers a few distinct product paths to compare.
Common 2020 Audi A6 Quattro tire questions usually come down to size by sub-model, wheel diameter, available radial choices, and what to check before putting a modern luxury sport sedan back on the road.
Tire Size & Fitment
What tire size fits a 2020 Audi A6 Quattro?
The 2020 Audi A6 Quattro uses three primary radial tire sizes: 245/45R19, 255/40R20, and 255/35R21. Most covered sub-models use either 245/45R19 or 255/40R20, while the Prestige 3.0 fitment range also includes 255/35R21.
The practical decision starts with identifying the exact sub-model and confirming the wheel diameter already on the car. These sizes are not interchangeable primary fitments, because each one is built around a different rim diameter and should be matched to the actual wheel and clearance setup on the vehicle.
What size rim does a 2020 Audi A6 Quattro use?
A 2020 Audi A6 Quattro can use 19-inch, 20-inch, or 21-inch rims, depending on the tire size and sub-model configuration. The matching fitments are 245/45R19 on 19-inch rims, 255/40R20 on 20-inch rims, and 255/35R21 on 21-inch rims.
Rim diameter should be verified before anything else because it determines which of the primary tire sizes belongs on the car. If the A6 has aftermarket wheels, a seasonal wheel set, or a replacement wheel from a previous owner, checking the stamped wheel size is smarter than relying on trim name alone.
Do all 2020 Audi A6 Quattro sub-models use the same tire size?
No. The covered 2020 Audi A6 Quattro sub-models overlap heavily, but they do not all use the exact same tire-size range. Premium, Premium Plus, and Prestige 2.0 trims use 245/45R19 and 255/40R20, while Prestige 3.0 also adds 255/35R21.
That makes the sub-model important, but wheel diameter still matters just as much. Even within trims that share two possible sizes, the correct tire depends on whether the car is actually wearing 19-inch or 20-inch wheels, so a quick wheel check helps prevent ordering the right size for the wrong setup.
Choosing the Right Tire
What should I consider when choosing a tire for a 2020 Audi A6 Quattro?
Start with the correct primary size for the car’s wheel package: 245/45R19, 255/40R20, or 255/35R21. From there, the main comparison points are tire construction, series, rim-width compatibility where stated, load specification where stated, and how the tire’s performance focus matches the way the A6 is driven.
A 19-inch setup gives the broadest visible product choice here, while 20-inch fitment is more limited and 21-inch fitment needs especially careful setup confirmation. Matching the tire to the actual wheel diameter and the car’s present configuration matters more than choosing by trim name or appearance alone.
What sidewall styles are available for 2020 Audi A6 Quattro tires?
The available 2020 Audi A6 Quattro products here use a blackwall sidewall style. That gives the car a clean modern look that suits the A6’s contemporary sport-luxury character without introducing raised white lettering, whitewall, or other more traditional sidewall treatments.
Since sidewall appearance is straightforward, the more meaningful buying differences are the tire series, brand, and size-specific fitment details. Owners who want the tire to visually match the car’s present wheel and trim package should focus on choosing the right size first and then compare the product lines available within that size.
What brands offer tires for the 2020 Audi A6 Quattro?
BFGoodrich and Nitto both offer applicable tires for the 2020 Audi A6 Quattro sizes shown here. BFGoodrich appears in both 245/45R19 and 255/40R20, while Nitto appears in 245/45R19 with the NT555 G2.
Brand choice should still come after fitment choice. Once the correct wheel diameter and tire size are confirmed, comparing brand offerings by tire series, stated rim-width range, load specification, and intended road use gives a more useful result than picking a brand first and trying to make the size decision afterward.
Restoration & Appearance
Does correct tire fitment matter for a 2020 Audi A6 Quattro restoration or refurbishment?
Yes. Even on a modern vehicle like the 2020 Audi A6 Quattro, correct tire fitment matters because the car uses distinct 19-, 20-, and 21-inch wheel and tire combinations. Staying with the proper size preserves the intended relationship between wheel diameter, tire profile, and the car’s overall visual balance.
A refurbishment-minded owner should confirm the car’s actual wheel setup before choosing replacement tires, especially if the vehicle has changed hands or worn alternate wheel packages. The right size keeps the presentation consistent, while the wrong rim diameter or profile can make the car look out of proportion and complicate fitment.
How does tire selection affect the appearance of a 2020 Audi A6 Quattro?
Tire selection affects the 2020 Audi A6 Quattro mostly through wheel diameter, sidewall height, and overall visual stance. A 245/45R19 presents a taller sidewall than the 255/40R20 or 255/35R21, while all of the applicable products shown here use a blackwall sidewall treatment.
That means the appearance decision is tied more to the car’s existing wheel package than to decorative sidewall variation. Owners trying to preserve a clean, OEM-style modern look should verify the mounted wheel diameter and stay within the correct size family for that setup rather than mixing sizes for appearance alone.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2020 Audi A6 Quattro?
Yes. Modifications can affect tire fitment on a 2020 Audi A6 Quattro even when the tire size itself looks close to stock. Aftermarket wheels, altered wheel widths, offset changes, suspension lowering, or previous collision repairs can all change how much room the tire has at the fender, strut, and steering points.
That is especially important on a car with 19-, 20-, and 21-inch fitment possibilities. Before replacing tires, compare the actual wheel diameter and width on the car, then inspect for clearance at full steering lock and through suspension travel so the next tire matches the vehicle as it sits now.
What should I inspect before driving a 2020 Audi A6 Quattro on new tires?
Before road use, inspect the wheel size, tire pressure, valve stems, lug torque, and the tire sidewalls and tread surfaces for any shipping or mounting damage. It also helps to confirm that all four tires match the intended size for the car’s setup and that no clearance issue appears at the fenders or suspension.
A short, careful test drive is a smart follow-up on a 2020 Audi A6 Quattro because it can reveal vibration, rubbing, or pull that was not obvious on the lift. Rechecking pressure after the first drive and watching for uneven wear early can catch setup issues before they become expensive.
How often should tires on a 2020 Audi A6 Quattro be inspected?
Tires on a 2020 Audi A6 Quattro should be inspected regularly, not just at replacement time. A monthly check of pressure, tread condition, and sidewall condition is a sensible routine, and the tires should also be looked over before a longer trip or after any noticeable change in ride, noise, or steering feel.
Modern performance-oriented radial tires can hide early problems until wear patterns or air loss become obvious. Looking for cuts, bulges, punctures, and irregular shoulder wear helps catch alignment or suspension issues early, especially on larger-diameter wheel packages where road impacts and low-profile sidewalls deserve closer attention.
