The 2019 Audi A5 Sportback blends coupe-like styling with four-door practicality, making it one of the more versatile modern Audis for drivers who want everyday usability without giving up a distinctly sporty look. Its tire fitment reflects that balance, with radial sizes ranging from 245/40R18 to 255/35R19 depending on trim and wheel setup. That means the main decision is not just replacing a worn tire, but confirming which rim diameter your Sportback actually uses and then choosing among available performance-oriented radial options. Sidewall treatment, tire series, and intended use all matter once the correct size is confirmed.
Which Tire Size Is Right for The 2019 Audi A5 Sportback
The 2019 Audi A5 Sportback uses two primary tire sizes, and the right one depends first on trim level and wheel diameter. Premium models use an 18-inch setup, while Premium Plus and Prestige can use either 18-inch or 19-inch tires, so confirming the exact wheel on the car is the first step before comparing brands, sidewall styles, or tire series.
245/40R18 is a metric radial size in which 245 is the nominal section width in millimeters, 40 is the aspect ratio, R identifies radial construction, and 18 is the rim diameter in inches. On the 2019 Audi A5 Sportback, this size supports the car's modern performance-oriented fitment on an 18-inch wheel. Available choices include blackwall, redline, and raised white letter sidewall treatments, with tire series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, Street Pro III, and Drag Radial. This size is the one to evaluate when the car is equipped with the standard 18-inch wheel package.
255/35R19 is a metric radial size where 255 represents nominal section width in millimeters, 35 is the aspect ratio, R marks radial construction, and 19 indicates a 19-inch rim. For the 2019 Audi A5 Sportback, this size belongs to the larger-wheel fitment used on certain Premium Plus and Prestige configurations. Product choices in this size focus on blackwall performance radials, including several BFGoodrich g-Force series options. This is the size to consider only after confirming that the car is running the 19-inch wheel setup rather than the 18-inch alternative.
Sub-model fitment on the 2019 Audi A5 Sportback is not completely uniform, because tire size changes with trim and wheel package. Checking whether the car is a Premium, Premium Plus, or Prestige model helps narrow the correct size before comparing individual tire options.
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2019 Audi A5 Sportback Premium
The 2019 Audi A5 Sportback Premium uses the 245/40R18 radial tire size. For this trim, tire selection centers on choosing the right 18-inch radial by intended use, sidewall appearance, and product series rather than sorting through multiple primary fitments.
The 2019 Audi A5 Sportback Premium Plus can use either the 245/40R18 or 255/35R19 radial size depending on the wheel setup on the car. That makes wheel confirmation especially important before selecting a tire, since 18-inch and 19-inch fitments are not interchangeable.
The 2019 Audi A5 Sportback Prestige also appears with either 245/40R18 or 255/35R19 radial tires. Tire selection starts with verifying the installed rim diameter, then choosing among the available performance-oriented radial products in the matching 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 2019 Audi A5 Sportback Tires for Sale
Available 2019 Audi A5 Sportback tire choices center on radial performance tires in 245/40R18 and 255/35R19. Buyers can compare BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster offerings across several tire series, with blackwall options joined by redline and raised white letter choices in 245/40R18.
Common questions for the 2019 Audi A5 Sportback usually come down to correct tire size by trim, 18-inch versus 19-inch wheel fitment, product style differences, and what to inspect before putting the car back into regular road use.
Tire Size & Fitment
What tire size fits a 2019 Audi A5 Sportback?
The 2019 Audi A5 Sportback uses two primary tire sizes: 245/40R18 and 255/35R19. The 245/40R18 size applies to the Premium trim, while Premium Plus and Prestige models can use either 245/40R18 or 255/35R19 depending on the wheel setup installed on the car.
The practical difference is that tire selection starts with the wheel diameter already on your A5 Sportback. An 18-inch wheel takes the 245/40R18 size, while a 19-inch wheel takes 255/35R19, so checking the tire sidewall and wheel itself is more important than choosing by trim name alone.
What size rim does a 2019 Audi A5 Sportback use?
A 2019 Audi A5 Sportback uses either an 18-inch or 19-inch rim, depending on the tire size fitted to the car. The 245/40R18 tire is used on an 18-inch rim, and the 255/35R19 tire is used on a 19-inch rim.
Rim diameter has to match the tire exactly, so this is the first thing to verify before replacing tires. It is also worth checking actual wheel width, especially if the car has aftermarket wheels, because tire options within the same diameter can still have different approved rim-width ranges.
Do all 2019 Audi A5 Sportback sub-models use the same tire size?
No, not all 2019 Audi A5 Sportback sub-models use the same tire size. The Premium trim uses 245/40R18, while the Premium Plus and Prestige trims can be equipped with either 245/40R18 or 255/35R19.
That means trim level helps narrow the fitment, but it does not always settle the question by itself. On Premium Plus and Prestige cars, the installed wheel package is the deciding factor, so confirming the tire size on the car is the safest way to avoid ordering an 18-inch tire for a 19-inch wheel or the reverse.
Choosing the Right Tire
What should I consider when choosing a 245/40R18 tire for a 2019 Audi A5 Sportback?
A 245/40R18 tire for a 2019 Audi A5 Sportback should first be matched to the car's 18-inch wheel setup, then compared by construction details, intended use, sidewall style, and tire series. Available choices include blackwall, redline, and raised white letter options, along with street-performance and drag-oriented radials.
Selection becomes easier once the goal is clear. A driver focused on everyday road use may want a conventional performance radial, while an owner chasing a more distinctive look may focus on sidewall treatment. Rim-width compatibility, load figures where stated, and the car's actual wheel setup should all be checked before choosing.
What sidewall styles are available for 2019 Audi A5 Sportback tires?
Sidewall styles for the 2019 Audi A5 Sportback include blackwall, redline, and RWL, which is raised white letter. Those appearance choices are available within the 245/40R18 size, while the 255/35R19 options shown here are blackwall performance radials.
Sidewall style affects the car's visual character more than its basic fitment, but it still matters to many buyers. A blackwall keeps a modern understated look, while redline or raised white letters add a more custom or performance-oriented presentation, so it helps to choose the style that fits the way your Sportback is actually used and displayed.
What brands offer tires for the 2019 Audi A5 Sportback?
Tires for the 2019 Audi A5 Sportback are available from BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster across the applicable sizes. Brand availability varies by size, with the broadest mix appearing in 245/40R18 and a more focused BFGoodrich selection in 255/35R19.
Brand choice should be considered alongside the exact tire size, wheel diameter, and the type of tire you want on the car. Some options emphasize mainstream street performance, while others stand out because of sidewall styling or specialized use, so comparing series details is usually more useful than choosing by brand name alone.
Restoration & Appearance
Which tire should I choose for a period-style 2019 Audi A5 Sportback?
A period-style approach on a 2019 Audi A5 Sportback still starts with the correct modern radial size for the wheel on the car, either 245/40R18 or 255/35R19. Since this is a contemporary vehicle, appearance choices tend to revolve more around sidewall treatment and tire series than around vintage construction decisions.
For a cleaner factory-inspired presentation, many owners will lean toward a blackwall radial in the correct size. If the goal is a more personalized look, 245/40R18 also opens the door to redline or raised white letter styles, but the right visual choice should still respect wheel diameter, overall fitment, and how the car is actually presented.
How does tire construction affect the appearance of a restored 2019 Audi A5 Sportback?
On a 2019 Audi A5 Sportback, tire construction is straightforward because the primary fitments are radial. That means appearance differences come less from bias-ply-versus-radial decisions and more from profile, wheel diameter, sidewall styling, and the character of the tire series chosen.
An 18-inch fitment with a distinctive sidewall treatment can give the car a different visual impression than a blackwall 19-inch setup, even though both remain modern radial combinations. For restoration-minded owners, the main goal is usually preserving the proper contemporary look of the car rather than introducing an obviously mismatched tire style.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 Audi A5 Sportback?
Yes, modifications can affect tire fitment on a 2019 Audi A5 Sportback. Aftermarket wheels, changes in wheel width, altered offset, suspension lowering, or body modifications can all change how a 245/40R18 or 255/35R19 tire sits in the wheel opening and how much clearance remains during steering and suspension travel.
Even when the tire size itself is correct, a modified setup can create rubbing or compatibility issues that do not exist on a stock car. Checking wheel dimensions, inner and outer clearance, and the car's current ride height before mounting tires is especially important when the Sportback no longer wears its original wheel and suspension configuration.
What should I inspect before driving a 2019 Audi A5 Sportback on new tires?
Before driving a 2019 Audi A5 Sportback on new tires, inspect the wheels for damage, confirm the tire size matches the rim diameter, and make sure inflation is set appropriately for the tires being installed. It is also wise to check for any suspension or alignment issues that may have caused uneven wear on the previous set.
A short inspection drive can reveal vibration, pulling, or unexpected clearance problems before the car goes back into normal use. Lug torque, visible sidewall clearance, and even tread contact across the width of the tire are all worth checking, especially if the car recently changed wheel size or has been sitting for a prolonged period.
How often should tires on a 2019 Audi A5 Sportback be inspected?
Tires on a 2019 Audi A5 Sportback should be inspected regularly, not just when tread looks low. A quick visual check before longer drives and a more thorough inspection at routine service intervals helps catch uneven wear, cuts, bulges, embedded debris, or slow air loss before those issues become more serious.
Cars that are driven infrequently still need attention because age, storage conditions, and extended parking can affect tire condition even when mileage stays low. Looking at sidewalls, monitoring pressure, and checking for flat-spotting or weather-related cracking is especially worthwhile on a Sportback that spends part of the year stored or lightly used.
