The 2020 Audi S3 sits in the modern sport-compact luxury category with turbocharged performance, quattro all-wheel drive, and a chassis that rewards precise steering and a properly matched tire. For many owners, it is a daily-driven performance sedan that still benefits from careful attention to wheel and tire setup. The 2020 Audi S3 uses radial tires in two fitments, 225/40R18 and 235/35R19, depending on wheel package. Available choices stay focused on blackwall performance-oriented radials from BFGoodrich and Nitto. The real decision is confirming whether your car is on 18-inch or 19-inch wheels, then choosing the tire series that best suits your driving priorities and overall presentation.
Which Tire Size Is Right for The 2020 Audi S3
The 2020 Audi S3 uses two primary tire sizes, and the first step is confirming whether your car is on 18-inch or 19-inch wheels. Both fitments are radial, and both appear across the covered S3 sub-models, so wheel diameter matters more than trim name here. Once that is confirmed, the choice becomes selecting the right performance tire series within the correct size.
225/40R18 is a modern metric radial size in which 225 identifies the section width in millimeters, 40 is the aspect ratio, R marks radial construction, and 18 is the wheel diameter in inches. On the 2020 Audi S3, this size supports the car's contemporary sport-sedan character with an 18-inch fitment. Available choices include BFGoodrich and Nitto options 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. This size is the right place to start if your S3 is equipped with 18-inch wheels and you want to compare tire character within that wheel package.
235/35R19 is also a modern metric radial size, with 235 indicating section width in millimeters, 35 identifying the aspect ratio, R for radial construction, and 19 for the wheel diameter. For the 2020 Audi S3, this fitment pairs with a 19-inch wheel setup and keeps the tire choice within the low-profile performance category. Available blackwall options include Nitto NT555 G2 and BFGoodrich g-Force Phenom T/A. This is the size to evaluate when your S3 is already on 19-inch wheels and you want to stay with the proper diameter while comparing available tire series.
Tire fitment is straightforward across the covered 2020 Audi S3 sub-models because both Premium and Premium Plus can use the same two tire sizes. The important step is confirming which wheel diameter is actually on the car before selecting a tire.
1
2020 Audi S3 Premium
The 2020 Audi S3 Premium can use either the 225/40R18 radial fitment or the 235/35R19 radial fitment. Tire selection starts with verifying whether the car is on 18-inch or 19-inch wheels, then comparing the available blackwall performance tire series in that exact size.
The 2020 Audi S3 Premium Plus also uses either 225/40R18 or 235/35R19 in radial construction. That makes wheel confirmation more important than trim badge alone, especially if the car has seen wheel changes or came with a different factory-style wheel package.
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 S3 Tires for Sale
Available 2020 Audi S3 tires center on the two correct radial sizes, with BFGoodrich and Nitto offerings in blackwall performance-oriented series. The product grid is where to compare wheel-size match, tire series, rim-width range where stated, and supporting load or weight details.
Owners of a 2020 Audi S3 usually need to confirm the correct wheel-based tire size first, then compare radial tire series, rim compatibility, and maintenance considerations for a modern performance sedan.
Tire Size & Fitment
What tire size fits a 2020 Audi S3?
The 2020 Audi S3 uses two primary tire sizes: 225/40R18 and 235/35R19. Both are radial fitments, and both appear on the covered S3 configurations, so the correct choice depends on the wheel package installed on the car rather than simply the trim name on the decklid.
The practical next step is to confirm whether the car is wearing 18-inch or 19-inch wheels before choosing a tire. If the S3 has aftermarket wheels, confirm the actual wheel diameter and width on the vehicle, then compare the tire size you plan to use against clearance, load needs, and the intended use of the car.
What size rim does a 2020 Audi S3 use?
A 2020 Audi S3 uses either an 18-inch rim with 225/40R18 tires or a 19-inch rim with 235/35R19 tires. Those two wheel diameters are both part of the S3 fitment picture, and each tire size is tied to its corresponding rim diameter.
Rim diameter is the first fitment detail to verify because an 18-inch tire cannot be mounted on a 19-inch wheel, and a 19-inch tire cannot be mounted on an 18-inch wheel. Looking only at trim is not enough if the car has been changed from its original setup, so checking the wheel itself avoids ordering the wrong size.
Do all 2020 Audi S3 sub-models use the same tire size?
The covered 2020 Audi S3 Premium and Premium Plus sub-models can both use the same two tire sizes: 225/40R18 and 235/35R19. That means trim level alone does not narrow the fitment to one size, because both wheel-based combinations are associated with both sub-models.
What matters most is the wheel diameter currently on the car. An owner shopping by trim should still inspect the wheels or current tire sidewalls to confirm whether the car needs the 18-inch or 19-inch fitment, especially if the S3 has changed hands or received replacement wheels during its life.
Choosing the Right Tire
What should I consider when choosing a 225/40R18 tire for a 2020 Audi S3?
Start by confirming that your 2020 Audi S3 actually uses the 225/40R18 size on 18-inch wheels. Within that size, available choices include BFGoodrich and Nitto blackwall radials across several performance-oriented series, with stated rim-width ranges on many options and some products also showing load and weight details.
The useful comparison points are tire series, wheel-width compatibility, and how the car is driven. A daily-driven S3 may point you toward one type of performance street tire, while a more aggressive use pattern may lead you to another, but the size itself still needs to match the wheel and overall setup already on the car.
What brands offer tires for the 2020 Audi S3?
BFGoodrich and Nitto both offer tires for the 2020 Audi S3 in the applicable sizes. Across 225/40R18 and 235/35R19, the available selections stay within blackwall radial performance tires rather than branching into multiple sidewall treatments or vintage-style constructions.
Brand choice should be weighed alongside the exact size your S3 uses and the tire series available in that size. It is more useful to compare each brand's offerings within the proper wheel diameter than to choose by brand name alone, especially when one size may have a broader range of series than the other.
What tire series are available for the 2020 Audi S3?
The 2020 Audi S3 is served by several performance-oriented radial tire series, including BFGoodrich g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and Nitto NT555 G2. The 225/40R18 fitment has the broadest series coverage, while 235/35R19 is available in a smaller but still focused group.
Series selection matters because it is one of the clearest ways to separate the available tires once size and wheel diameter are confirmed. Comparing by series can help narrow the field by intended driving style, construction details, and wheel-width compatibility where that information is stated for the tire you are considering.
Restoration & Appearance
Which tire should I choose for a period-style 2020 Audi S3?
A period-style approach on a 2020 Audi S3 still points toward the correct modern radial size already tied to the car: 225/40R18 or 235/35R19, depending on wheel diameter. The available choices are blackwall performance radials, which suit the S3's contemporary sport-sedan character better than trying to force a vintage-looking presentation onto the car.
A strong period-style result usually comes from matching the tire to the correct wheel package and overall stance rather than chasing decorative sidewall treatments. Owners who want the car to present as it would have in its model-year era should verify wheel size first, then choose a tire series that complements the S3's modern factory-inspired look.
Does correct tire fitment matter for a 2020 Audi S3 restoration?
Correct tire fitment absolutely matters on a 2020 Audi S3, even in a newer restoration or preservation context. The right size preserves the intended relationship between wheel diameter, sidewall profile, and overall appearance, while also keeping the car within the fitment range associated with its original-style wheel packages.
Moving away from the proper 225/40R18 or 235/35R19 fitment can change how the car looks and may also complicate clearance or wheel-compatibility checks. A restoration-oriented owner should confirm the actual wheels on the car and use the correct size as the starting point before comparing brands, tire series, and any stated rim-width range.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2020 Audi S3?
Yes, modifications can affect tire fitment on a 2020 Audi S3. Wheel changes, altered offsets, suspension lowering, and other chassis modifications can all influence whether a tire clears the fenders and suspension properly, even when the tire size looks close to one of the standard S3 fitments.
That is why a modified S3 should be checked as an individual setup rather than assumed to match stock fitment. Confirm the actual wheel diameter and width, inspect inner and outer clearance at full steering lock, and make sure the tire chosen still suits the car's intended road use before putting substantial miles on it.
What should I inspect before driving a 2020 Audi S3 on new tires?
Before driving a 2020 Audi S3 on new tires, inspect the wheel size, mounting direction if applicable, tire pressure, and basic clearance around the suspension and fenders. It is also smart to verify that all four tires match the intended size setup and that there is no shipping damage, bead issue, or obvious sidewall defect.
A short initial road check helps confirm that the car tracks normally and that nothing rubs under steering or compression. After the first miles, recheck inflation pressure and look for any signs of uneven seating or contact marks, especially if the car has aftermarket wheels or any suspension changes from standard configuration.
What should I check before a longer drive in a 2020 Audi S3?
Before a longer drive in a 2020 Audi S3, check inflation pressure, tread condition, and the sidewalls for cuts, bulges, or cracking. Make sure the car is on the correct 18-inch or 19-inch tire size for its wheels, and confirm that there is no unusual wear pattern that could point to alignment or suspension issues.
A longer trip puts more heat and sustained load into the tire, so it is worth taking a few extra minutes to inspect the whole setup. Looking over the wheels for damage, checking for slow air loss, and confirming that the spare or roadside plan matches the S3's wheel package can prevent avoidable problems once the drive is underway.
