The 2019 Audi A3 sits at the compact luxury end of the Audi lineup, blending crisp sedan and cabriolet styling with the kind of road manners buyers expect from a modern German sport sedan. On this car, tire choice is closely tied to trim level and wheel package rather than a single universal fitment. The 2019 Audi A3 uses radial tires in three primary sizes: 225/45R17, 225/40R18, and 235/35R19. Available choices include blackwall performance-focused options along with select raised white letter and redline offerings in 225/45R17. The key is confirming the exact sub-model and wheel diameter before comparing appearance, rim-width compatibility, and intended street use.
Which Tire Size Is Right for The 2019 Audi A3
Three tire sizes apply to the 2019 Audi A3, and they vary by sub-model and wheel package. The first step is confirming the exact trim and whether the car is on 17-inch, 18-inch, or 19-inch wheels, since rim diameter changes across these fitments. Once that is settled, the decision becomes comparing radial tire options within the correct size, including sidewall style, brand, tire series, and wheel-width compatibility.
Fit(s): Premium Cabriolet, Premium Plus Cabriolet, Premium Plus Sedan, Premium Sedan, Prestige Cabriolet, Prestige Sedan, and Titanium
Construction: Radial|Rim: 18 in
225/40R18 is a metric radial size with a 225-millimeter section width, a 40-series aspect ratio, and an 18-inch rim diameter. On the 2019 Audi A3, it is one of the most widely used primary fitments and keeps the buyer in a modern radial construction. This size is available from BFGoodrich and Nitto in blackwall form across series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. It is the size to evaluate when the car is equipped with 18-inch wheels and the goal is to stay with a contemporary performance-oriented presentation.
225/45R17 is a metric radial size that uses a 225-millimeter section width, a 45-series profile, and a 17-inch rim. For the 2019 Audi A3, this size applies to certain Premium sedan and cabriolet configurations, so it should not be assumed across every trim. Product choice is broader here, with BFGoodrich, Nitto, and Pro-Trac offerings, plus blackwall, raised white letter, and redline sidewall treatments. This size is worth focusing on when the car carries 17-inch wheels and the buyer wants the widest mix of brand, series, and appearance options.
Fit(s): Premium Plus Cabriolet, Premium Plus Sedan, Prestige Cabriolet, and Prestige Sedan
Construction: Radial|Rim: 19 in
235/35R19 is a metric radial size with a 235-millimeter section width, a 35-series aspect ratio, and a 19-inch rim diameter. On the 2019 Audi A3, it serves specific higher-wheel-package sedan and cabriolet trims rather than the full model range. Available choices center on blackwall radial products from Nitto and BFGoodrich, including NT555 G2 and g-Force Phenom T/A. This size becomes the right one to compare only after confirming a 19-inch wheel setup, since the lower-profile fitment leaves less room for mistakes in wheel and clearance matching.
Sub-model fitment matters on the 2019 Audi A3 because tire size changes with trim and wheel package. Some versions share 18-inch fitment, while others pair that common size with either a 17-inch or 19-inch alternative, so identifying the exact sub-model is the starting point.
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2019 Audi A3 Premium Cabriolet
The 2019 Audi A3 Premium Cabriolet uses radial fitments that can fall on either a 17-inch or 18-inch wheel package. That makes wheel confirmation especially important before choosing between available product lines, sidewall styles, and other size-specific tire options.
The 2019 Audi A3 Premium Plus Cabriolet uses radial tires with fitment tied to either an 18-inch or 19-inch wheel setup. Tire selection here starts with confirming the installed wheel diameter, then comparing the available blackwall performance-oriented options in the proper size.
The 2019 Audi A3 Premium Plus Sedan uses radial tire fitments associated with either 18-inch or 19-inch wheels. Once the wheel package is verified, the main decision becomes choosing among the available product series and checking wheel-width compatibility for the exact size.
The 2019 Audi A3 Premium Sedan uses radial fitments that can be paired with either 17-inch or 18-inch wheels. Buyers should confirm which wheel diameter is actually on the car before comparing tire series, sidewall treatments, and other size-specific choices.
The 2019 Audi A3 Prestige Cabriolet uses radial tire fitments tied to 18-inch or 19-inch wheels. That makes proper wheel identification the first step, followed by a comparison of the blackwall tire choices available in the correct low-profile size.
The 2019 Audi A3 Prestige Sedan uses radial tires with either an 18-inch or 19-inch fitment depending on the wheel setup. Choosing the right tire means confirming that wheel diameter first and then reviewing the product series available in the appropriate size.
The 2019 Audi A3 Titanium is the most straightforward trim in this group, using a single primary radial tire size on an 18-inch wheel. That simplifies the fitment decision and shifts attention toward comparing brand, tire series, and rim-width suitability within that one 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 A3 Tires for Sale
Available 2019 Audi A3 tire choices span 17-inch, 18-inch, and 19-inch radial fitments from BFGoodrich, Nitto, and Pro-Trac. Buyers can compare blackwall options across several performance-oriented series, with raised white letter and redline styles appearing in select 225/45R17 offerings.
These 2019 Audi A3 tire FAQs focus on the questions that matter most once the exact trim is known: correct size, wheel diameter, available radial choices, sidewall styles, and the fitment checks to make before regular road use.
Tire Size & Fitment
What tire size fits a 2019 Audi A3?
The 2019 Audi A3 uses three primary radial tire sizes: 225/45R17, 225/40R18, and 235/35R19. The correct one depends on the exact sub-model and wheel package, since this car was not limited to a single tire size across every sedan, cabriolet, and Titanium configuration.
The most important next step is verifying the wheel diameter actually installed on the car. A3 trims can share one size and differ on the second, so checking the trim level and the wheels on the vehicle will narrow the choice quickly and prevent comparing 17-inch, 18-inch, and 19-inch tires as though they are interchangeable.
What size rim does a 2019 Audi A3 use?
A 2019 Audi A3 can use 17-inch, 18-inch, or 19-inch rims depending on the sub-model and tire size. The matching tire fitments are 225/45R17 for 17-inch rims, 225/40R18 for 18-inch rims, and 235/35R19 for 19-inch rims.
Rim diameter is the first number to confirm because it determines which tire size family even belongs in the conversation. After that, check the wheel width against the specifications of the tire you are considering, especially on lower-profile 18-inch and 19-inch fitments where the margin for mismatch is smaller.
Do all 2019 Audi A3 sub-models use the same tire size?
No. The 2019 Audi A3 range uses more than one tire size, and fitment varies by sub-model. Some Premium configurations use 225/45R17 or 225/40R18, several Premium Plus and Prestige versions use 225/40R18 or 235/35R19, and the Titanium uses 225/40R18.
That variation means the exact trim name matters before comparing products. A buyer who starts with the sub-model and wheel diameter will get to the right size much faster than someone shopping by model name alone, especially because several A3 trims share one fitment while differing on the alternate wheel package.
Choosing the Right Tire
What should I consider when choosing a tire for a 2019 Audi A3?
Start with the correct primary size for the exact 2019 Audi A3 sub-model and wheel diameter, since the car uses 225/45R17, 225/40R18, or 235/35R19 depending on configuration. From there, the main choices are brand, tire series, sidewall style where available, and wheel-width compatibility for the specific tire.
It also helps to match the tire to how the car is used. A daily-driven sedan, a seasonal cabriolet, and a modified A3 may all lead the buyer to different priorities even within the same size, so compare the construction details, load figures when shown, and the wheel setup already on the vehicle.
What sidewall styles are available for 2019 Audi A3 tires?
Blackwall is the most common sidewall style across 2019 Audi A3 tire options, especially in 225/40R18 and 235/35R19. In 225/45R17, there are also Pro-Trac Street Pro III choices with raised white letter and redline sidewall treatments alongside blackwall offerings from BFGoodrich and Nitto.
Sidewall style is mainly an appearance decision once the correct size is confirmed. Buyers looking for a cleaner late-model look will usually focus on blackwall choices, while someone wanting a more distinctive visual statement on a 17-inch setup may want to compare the RWL and redline versions more closely.
What brands offer tires for the 2019 Audi A3?
Tires for the 2019 Audi A3 are available from BFGoodrich, Nitto, and Pro-Trac. BFGoodrich appears across all three primary sizes, Nitto is available in each of the three sizes as well, and Pro-Trac appears in 225/45R17 with Street Pro III offerings.
Brand alone should not be the only filter. It makes more sense to narrow the search by correct size first, then compare the available series, sidewall presentation, wheel-width specifications, and any stated load information that may matter for how the car is driven and how the owner wants it to look.
Restoration & Appearance
Which tire should I choose for a period-style 2019 Audi A3?
A period-style approach on a 2019 Audi A3 still starts with the exact factory-era size used by the car's wheel package: 225/45R17, 225/40R18, or 235/35R19. Since this is a modern Audi with radial fitments, the appearance decision is less about vintage construction and more about selecting a tire series and sidewall treatment that suits the car's character.
For a restrained, contemporary look, blackwall choices are the natural starting point. If the car uses 225/45R17 and the owner wants a more individualized presentation, raised white letter or redline options are available, but anyone chasing exact showroom-era appearance should also compare against original vehicle literature and wheel-package details.
How does tire construction affect the appearance of a restored 2019 Audi A3?
On a 2019 Audi A3, tire construction does not create a bias-ply-versus-radial appearance choice because the primary fitments are radial throughout. Visual character comes more from sidewall treatment, tread style, and how the tire fills the wheel and fender opening within the correct 17-inch, 18-inch, or 19-inch fitment.
That means appearance-focused buyers should pay close attention to the specific size and sidewall style rather than looking for an older-style construction change. A blackwall tire will keep the presentation closest to what many owners expect on a late-model Audi, while RWL or redline options can shift the look in a more customized direction.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 Audi A3?
Yes. Wheel changes, suspension lowering, offset differences, and body modifications can all affect tire fitment on a 2019 Audi A3, even when the tire size itself is one of the standard A3 sizes. That matters most with the lower-profile 225/40R18 and 235/35R19 fitments, where small changes can have a larger effect on clearance.
A modified A3 should be checked for wheel diameter, wheel width, offset, steering clearance, and room at the fenders before a new set is chosen. A tire that matches the correct nominal size still needs to work with the actual wheel and suspension setup on the car rather than the trim description alone.
What should I inspect before driving a 2019 Audi A3 on new tires?
Before driving a 2019 Audi A3 on new tires, inspect wheel condition, confirm the wheel diameter matches the tire size, and check that all four tires are properly mounted and inflated. It is also smart to look over the suspension and steering for worn parts that could affect alignment or cause uneven tire behavior.
A short clearance check at full steering lock can catch rubbing issues early, especially on cars with 18-inch or 19-inch fitments. After the first few drives, recheck pressure and watch for vibration, pulling, or unusual wear patterns, since those signs can point to alignment issues or wheel-related fitment problems.
How often should tires on a 2019 Audi A3 be inspected?
Tires on a 2019 Audi A3 should be inspected regularly, not just when replacement time comes around. A quick visual check for uneven wear, cuts, bulges, punctures, and sidewall damage is worthwhile throughout the driving season, and pressure should be checked consistently because low-profile tires can be more sensitive to inflation loss.
Cars that sit for stretches, such as weekend cabriolets, still need routine inspection because age, storage conditions, and underinflation can affect tire condition even with low mileage. Looking at tread wear across the full contact patch can also help reveal alignment or suspension issues before they turn into a more expensive tire problem.
