The 2018 Audi A7 Quattro blends fastback styling, luxury-sedan comfort, and all-weather grand-touring character in a way that makes wheel and tire fitment especially important. Its sleek profile and Quattro drivetrain reward a tire setup that preserves the car’s balance, stance, and road manners. This model uses radial tires in two primary sizes, 255/40R19 and 265/35R20, so the first step is confirming which wheel diameter is on the car. From there, the real choice becomes brand, sidewall presentation, and tire series, including blackwall, redline, and raised white letter options. That matters whether the goal is a clean stock-style look or a more personalized street appearance.
Which Tire Size Is Right for The 2018 Audi A7 Quattro
The 2018 Audi A7 Quattro uses two primary tire sizes, and both are radial fitments tied to different wheel diameters. Because both Premium Plus and Prestige can use either size, the most important step is confirming whether the car has 19-inch or 20-inch wheels before choosing a tire. Once wheel diameter is verified, the decision shifts to tire series, sidewall style, and the kind of road character or appearance you want to maintain.
255/40R19 is a metric radial size in which 255 identifies the nominal section width in millimeters, 40 is the aspect ratio, R indicates radial construction, and 19 is the rim diameter in inches. On the 2018 Audi A7 Quattro, this size supports the car’s modern performance-luxury fitment on a 19-inch wheel. Available choices include BFGoodrich and Pro-Trac products, with blackwall, redline, and raised white letter sidewall treatments across series such as g-Force and Street Pro III. This size is the right one to evaluate when the car retains its 19-inch wheel setup and you want to compare both appearance and product character within that fitment.
265/35R20 is a metric radial size where 265 is the nominal section width in millimeters, 35 is the aspect ratio, R denotes radial construction, and 20 identifies the wheel diameter in inches. For the 2018 Audi A7 Quattro, this size belongs with a 20-inch wheel and represents the larger-diameter fitment used on covered configurations. Tire choices include BFGoodrich, Nitto, and Pro-Trac, with blackwall, redline, and raised white letter presentations available in selected series. This is the size to focus on when the car is already equipped with 20-inch wheels and you want to confirm a compatible replacement before comparing brand or sidewall style.
Tire fitment on the 2018 Audi A7 Quattro is straightforward in one sense and important to verify in another: both covered sub-models can use the same two tire sizes. The key is not trim level alone, but confirming whether the car is on 19-inch or 20-inch wheels before selecting a replacement tire.
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2018 Audi A7 Quattro Premium Plus
The 2018 Audi A7 Quattro Premium Plus can use either of the model’s two radial tire sizes, depending on the wheel setup on the car. That makes wheel-diameter confirmation the first step, followed by comparing tire series and sidewall treatments that suit either a restrained OE-style appearance or a more customized look.
The 2018 Audi A7 Quattro Prestige also uses the same two radial fitment paths found elsewhere in the model range. Tire selection starts with verifying whether the car has 19-inch or 20-inch wheels, then narrowing choices by brand, series, and sidewall style within the correct size.
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 2018 Audi A7 Quattro Tires for Sale
Available 2018 Audi A7 Quattro tires span both 255/40R19 and 265/35R20 sizes, with choices from BFGoodrich, Pro-Trac, and Nitto. The product grid is useful for comparing tire series, blackwall versus redline or raised white letter sidewalls, and rim-width details where they apply.
These FAQs focus on the exact tire sizes used on the 2018 Audi A7 Quattro, how the 19-inch and 20-inch fitments differ, and what to consider when comparing brands, sidewall styles, wheel setup, and road-use condition.
Tire Size & Fitment
What tire size fits a 2018 Audi A7 Quattro?
The 2018 Audi A7 Quattro uses two tire sizes: 255/40R19 and 265/35R20. Both are radial fitments, and both Premium Plus and Prestige models can use either size depending on the wheel package installed on the car.
That means the correct choice starts with the wheel diameter actually on the vehicle, not just the trim badge. A7s that have been changed from their original wheel setup should be checked carefully, since a 19-inch tire and a 20-inch tire are not interchangeable simply because they belong to the same model line.
What size rim does a 2018 Audi A7 Quattro use?
A 2018 Audi A7 Quattro uses either a 19-inch or 20-inch rim, depending on which tire size is on the car. The 255/40R19 tire belongs on a 19-inch wheel, while the 265/35R20 tire belongs on a 20-inch wheel.
Checking wheel diameter is the first fitment step before comparing any tire options. It is also smart to confirm wheel width on the car, especially if aftermarket wheels have been installed, because some available tires include rim-width guidance that can help narrow the right replacement within the correct size.
Do all 2018 Audi A7 Quattro sub-models use the same tire size?
Premium Plus and Prestige versions of the 2018 Audi A7 Quattro share the same two tire-size possibilities: 255/40R19 and 265/35R20. In other words, sub-model alone does not narrow the fitment to one single size.
The practical difference comes from the wheel package actually fitted to the car. Looking at the tire sidewall or measuring the wheel diameter is the quickest way to confirm the proper replacement path, and that matters more than assuming one trim automatically uses a certain size.
Choosing the Right Tire
What should I consider when choosing a tire for a 2018 Audi A7 Quattro?
Start with the correct size and wheel diameter: 255/40R19 for a 19-inch rim or 265/35R20 for a 20-inch rim. From there, compare construction details within the available radial options, along with brand, tire series, sidewall style, and any stated rim-width information.
The right choice depends on how the car is used and how you want it to look. Some owners want a clean blackwall performance-touring presentation, while others prefer a more distinctive redline or raised white letter sidewall, so matching the tire to both the wheel setup and the car’s overall character is important.
What sidewall styles are available for 2018 Audi A7 Quattro tires?
Sidewall choices for the 2018 Audi A7 Quattro include blackwall, redline, and RWL, which is raised white letter. Those styles appear across the two applicable sizes, giving the car either a restrained modern look or a more custom visual treatment.
Sidewall style does not change the need to stay with the correct tire size and wheel diameter. It is best treated as an appearance decision after fitment is confirmed, especially on a car like the A7 where a low-profile tire has a strong effect on the overall stance and presentation.
What brands offer tires for the 2018 Audi A7 Quattro?
Tires for the 2018 Audi A7 Quattro are available from BFGoodrich, Pro-Trac, and Nitto across the covered sizes. The available lineup includes series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, Street Pro III, and NT555 G2.
Brand alone should not make the decision. It helps to compare which series are offered in your exact size, whether the tire comes in blackwall, redline, or raised white letter form, and whether the product’s wheel-width guidance matches the wheels currently on the car.
Restoration & Appearance
Which tire should I choose for a period-style 2018 Audi A7 Quattro?
A period-style approach for a 2018 Audi A7 Quattro usually starts with preserving the correct modern radial size and matching the wheel diameter already on the car. From there, the visual choice becomes more about sidewall treatment and tire series than about switching to an older construction type.
Blackwall options tend to keep the car’s contemporary luxury-performance character intact, while redline or raised white letter choices create a more customized presentation. The cleaner result usually comes from choosing the right size first, then selecting the sidewall style that best suits the stance and theme of the vehicle.
How does tire construction affect the appearance of a restored 2018 Audi A7 Quattro?
On the 2018 Audi A7 Quattro, construction is less about bias-ply versus radial and more about staying within the correct modern radial fitment. Since both primary sizes are radial, the appearance difference comes mostly from tire profile, sidewall treatment, and how the tire sits on the proper wheel diameter.
That makes visual consistency especially important if the car is being refreshed or preserved. A blackwall keeps the look understated and contemporary, while redline or raised white letter options push the car toward a more personalized style, so the final choice should support the overall presentation rather than fight it.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Audi A7 Quattro?
Yes. A 2018 Audi A7 Quattro with aftermarket wheels, altered offsets, suspension changes, or body modifications may need closer fitment review even when the tire size matches one of the original size paths. The car’s two approved sizes are tied directly to 19-inch and 20-inch wheel setups.
A modified A7 should be checked for wheel width, inner and outer clearance, and any interference during steering or suspension movement. That matters even more with low-profile tires, where small changes in wheel setup can affect how the tire sits relative to the fender and suspension components.
What should I inspect before driving a 2018 Audi A7 Quattro on new tires?
Before road use, confirm that all four tires are the correct size for the wheels on the car and inspect for proper mounting, inflation, and visible clearance around suspension and body components. It is also smart to look over the wheels themselves for damage or irregular wear patterns from the previous tires.
A short early inspection after installation can be worthwhile on a performance-oriented luxury car like the A7. Recheck pressure, look for rubbing marks, and pay attention to vibration or pull, especially if the car has changed wheel packages or has not been driven much before the new tires were installed.
How often should tires on a 2018 Audi A7 Quattro be inspected?
Tires on a 2018 Audi A7 Quattro should be inspected regularly, not just when tread looks low. Pressure, tread wear, cuts, bulges, and sidewall aging are all worth checking, particularly on a car that may alternate between daily use and long parked periods.
A quick visual inspection before longer trips is a sensible habit, and any change in handling, vibration, or air loss deserves prompt attention. Low-profile fitments also benefit from periodic wheel inspection, since impacts and curb contact can affect both the wheel and the tire even when damage is not obvious at first glance.
