The 2019 Audi A6 Quattro sits in the modern luxury sport-sedan category, blending all-weather confidence with the sharp road manners expected from Audi’s quattro lineup. In this generation, the A6 leaned heavily into refined long-distance comfort while still carrying a distinctly athletic character. Tire fitment for the 2019 Audi A6 Quattro centers on three radial sizes: 245/45R19, 255/40R20, and 255/35R21, with fitment varying by trim and wheel package. That makes wheel diameter the first thing to confirm, followed by the exact sub-model. From there, the decision shifts toward the right combination of road-focused performance, blackwall appearance, and rim compatibility for the way the car is driven.
Which Tire Size Is Right for The 2019 Audi A6 Quattro
The 2019 Audi A6 Quattro uses three primary tire sizes, all in radial construction, and they do not all share the same rim diameter. Fitment varies by sub-model and wheel package, so the first step is confirming whether the car is on 19-inch, 20-inch, or 21-inch wheels. Once that is settled, the real comparison is between the available product choices within the correct size and the wheel specifications that support them.
255/35R21 is a modern metric radial where 255 gives the section width in millimeters, 35 is the aspect ratio, R indicates radial construction, and 21 denotes the rim diameter in inches. On the 2019 Audi A6 Quattro, this size belongs to a 21-inch wheel fitment and should be treated as a distinct setup rather than a variation of the 19-inch or 20-inch options. The key consideration here is confirming that the car actually carries the 21-inch wheel package before comparing tire choices. Buyers looking at this size should focus on exact wheel diameter, overall fitment, and clearance rather than assuming all A6 Quattro trims use it.
Sub-model fitment matters on the 2019 Audi A6 Quattro because tire size is tied to trim and wheel package rather than one universal setup across the range. Premium and Premium Plus share the same two primary sizes, while Prestige adds a 21-inch fitment that needs to be confirmed before selecting tires.
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2019 Audi A6 Quattro Premium
The 2019 Audi A6 Quattro Premium uses radial tire fitments in 245/45R19 or 255/40R20, depending on the wheel setup on the car. Tire selection starts with confirming whether the Premium is on 19-inch or 20-inch wheels, then comparing the available blackwall product options within that exact size.
The 2019 Audi A6 Quattro Premium Plus shares the same radial fitment pattern as the Premium, using either 245/45R19 or 255/40R20. That makes wheel diameter the key check before choosing a tire, especially if the car has been changed from its original wheel package or fitted with aftermarket wheels.
The 2019 Audi A6 Quattro Prestige can use 245/45R19, 255/40R20, or 255/35R21, making it the broadest fitment range in the lineup. Tire choice on a Prestige depends on confirming the actual wheel diameter on the car first, then narrowing the selection to the correct radial size for that setup.
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 2019 Audi A6 Quattro Tires for Sale
Available 2019 Audi A6 Quattro tire choices center on 245/45R19 and 255/40R20 radial fitments, with blackwall options from BFGoodrich and Nitto. The main points of comparison are tire series, rim-width compatibility, load specification where shown, and how each product suits the car’s wheel setup.
These 2019 Audi A6 Quattro tire FAQs focus on the sizes tied to each trim, the correct wheel diameter to confirm first, and how to compare available radial tire options before putting the car back on the road.
Tire Size & Fitment
What tire size fits a 2019 Audi A6 Quattro?
The 2019 Audi A6 Quattro uses three primary tire sizes: 245/45R19, 255/40R20, and 255/35R21. All three are radial sizes, and the correct one depends on the trim and wheel package installed on the car rather than one single fitment across every A6 Quattro.
The most important step is confirming the actual wheel diameter on the vehicle before choosing a tire. Premium and Premium Plus models use 19-inch or 20-inch fitments, while Prestige can also use a 21-inch setup. If the car has aftermarket wheels or a changed wheel package, verify the current wheel size before comparing tire options.
What size rim does a 2019 Audi A6 Quattro use?
A 2019 Audi A6 Quattro can use 19-inch, 20-inch, or 21-inch rims, depending on the exact tire size and sub-model configuration. The 245/45R19 size uses a 19-inch rim, 255/40R20 uses a 20-inch rim, and 255/35R21 uses a 21-inch rim.
Rim diameter should be checked before anything else because these tire sizes are not interchangeable across different wheel diameters. A quick look at the sidewall will usually confirm the installed size, but the wheel itself should also be measured or verified if there is any doubt. That matters even more on cars that may have had wheel upgrades after delivery.
Do all 2019 Audi A6 Quattro sub-models use the same tire size?
No. The 2019 Audi A6 Quattro Premium and Premium Plus use 245/45R19 or 255/40R20, while the Prestige uses those same sizes and can also use 255/35R21. The trim level and wheel package both affect which tire size applies.
That means tire selection starts with identifying the exact sub-model and then confirming the wheels currently on the car. A Prestige owner should not assume the car has 21-inch wheels, and a Premium or Premium Plus owner should not assume every larger Audi wheel option applies. Matching the tire to the actual wheel setup is the safe way to narrow the choices.
Choosing the Right Tire
What should I consider when choosing a 245/45R19 tire for a 2019 Audi A6 Quattro?
For a 2019 Audi A6 Quattro running 245/45R19 tires, the main factors are correct size, radial construction, rim-width compatibility, and the character of the available tire series. In this size, choices include blackwall tires from BFGoodrich and Nitto, with options such as g-Force Comp 2 AS, g-Force Phenom T/A, and NT555 G2.
The best comparison is not just brand name but how each tire matches the car’s wheel width and intended use. A car driven regularly may call for one type of road behavior, while a vehicle used more selectively may put more weight on series preference and overall feel. Confirm the wheel width and any load specification shown before making the final choice.
What sidewall styles are available for 2019 Audi A6 Quattro tires?
The available products for the 2019 Audi A6 Quattro in the supported sizes shown here use a blackwall sidewall style. That gives the car a clean contemporary appearance that suits a modern luxury sport sedan without introducing whitewall or raised-letter visual treatments.
Sidewall style matters mostly as an appearance decision once the correct size and wheel diameter are confirmed. On a car like the A6 Quattro, blackwall keeps the look understated and consistent across the available product choices. After narrowing the sidewall appearance, compare tire series, rim-width requirements, and any load figures attached to the exact product you are considering.
What brands offer tires for the 2019 Audi A6 Quattro?
BFGoodrich and Nitto offer tire options for the 2019 Audi A6 Quattro within the sizes available here. BFGoodrich appears in both 245/45R19 and 255/40R20, while Nitto appears in 245/45R19, giving buyers a few different radial product lines to compare.
Brand choice should be treated as one part of the decision rather than the whole decision. It is more useful to compare the exact tire series, sidewall style, wheel-width fitment, and any visible load specification within the size that matches the car. Once the right size is confirmed, those details do more to separate one option from another than the name alone.
Restoration & Appearance
Which tire should I choose for a period-style 2019 Audi A6 Quattro?
A period-style approach on a 2019 Audi A6 Quattro usually means staying with the tire size and wheel diameter that match the car’s original trim-level presentation, whether that is 245/45R19, 255/40R20, or 255/35R21. Because this is a modern Audi sedan, the appearance goal is generally preserving the intended wheel-and-tire proportion rather than recreating a vintage sidewall treatment.
That makes the first decision one of size and stance, not nostalgia-driven styling cues. Once the correct wheel diameter is confirmed, a blackwall radial keeps the look in line with the car’s era. Owners seeking the most authentic presentation should compare the current wheel setup with vehicle-specific reference material, especially if the car may have been upgraded or altered.
Does correct tire fitment matter for a 2019 Audi A6 Quattro restoration?
Yes. Correct tire fitment matters on a 2019 Audi A6 Quattro because the visual balance of the car depends on matching the right tire size to the right wheel diameter. Using 19-inch, 20-inch, or 21-inch fitments changes the look of the car, and each size belongs to a specific wheel setup.
Fitment also affects how complete and coherent the finished car appears, especially on a modern luxury sedan where wheel-and-tire proportion is a major part of the design. A restoration-minded owner should verify the trim level, wheel size, and current setup before purchasing tires. That is particularly important when a car has passed through multiple owners or received aftermarket wheels at some point.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 Audi A6 Quattro?
Yes. Modifications can affect tire fitment on a 2019 Audi A6 Quattro, especially if the car has aftermarket wheels, changed wheel widths, different offsets, suspension lowering, or body alterations. Even when the tire size matches one of the accepted A6 Quattro sizes, the surrounding hardware can change how much room the tire has.
That is why modified cars should be checked for steering clearance, inner-fender clearance, and suspension travel before new tires go into service. The original fitment range includes 19-inch, 20-inch, and 21-inch wheel diameters, so changes in wheel package deserve careful verification. A tire professional can help confirm whether the current setup supports the selected size safely.
What should I inspect before driving a 2019 Audi A6 Quattro on new tires?
Before driving a 2019 Audi A6 Quattro on new tires, inspect the wheel diameter, wheel width, and the tire size installed to make sure all four match the intended setup. It is also smart to check inflation pressure, look for any visible wheel damage, and confirm that the tires clear suspension and body components at full steering lock.
A careful road-use check should also include lug torque, valve condition, and a quick review of tread and sidewall condition after the first short drive. On a car that has sat for a while, inspect the rest of the suspension and alignment-related wear points as well. New tires perform best when the underlying wheel and chassis condition are sound.
How should tires on a 2019 Audi A6 Quattro be inspected and maintained?
Tires on a 2019 Audi A6 Quattro should be inspected regularly for pressure loss, uneven tread wear, cuts, bulges, and sidewall damage. Because the car uses low-profile radial sizes depending on wheel package, maintaining the correct pressure and watching for impact damage from potholes or curb contact is especially worthwhile.
Routine maintenance also means checking condition before longer trips and after periods of storage or limited use. A car driven infrequently can still develop tire issues through age, flat spotting, or unnoticed air loss. Keeping the tires clean, properly inflated, and visually inspected helps preserve ride quality and makes it easier to catch fitment or wear problems before they become larger issues.
