The 2024 Audi S8 sits at the sharp end of the modern luxury sport sedan world, blending executive-car presence with the kind of speed and chassis control expected from Audi’s S models. It is a large, sophisticated car, but tire choice remains a very specific fitment question because this model uses two different radial sizes depending on configuration. The standard setup uses 265/40R20, while the Black Optic/Executive Package uses 265/35R21. That means the real decision starts with confirming which wheel package is on the car, then comparing tires in the correct size for road manners, appearance, and day-to-day use without upsetting the intended fitment.
Which Tire Size Is Right for The 2024 Audi S8
Two tire sizes apply to the 2024 Audi S8, and the right one depends on the vehicle’s exact configuration. The Base model uses a 20-inch radial tire, while the S8 with Black Optic/Executive Package uses a 21-inch radial tire. Before choosing a tire, confirm the sub-model and wheel diameter on the car, since the two sizes are close in overall diameter but are built for different rim sizes.
The 265/40R20 size uses a modern metric format: 265 is the nominal section width in millimeters, 40 is the aspect ratio, R identifies radial construction, and 20 is the rim diameter in inches. On the 2024 Audi S8, this size serves the Base configuration and reflects a contemporary high-performance luxury sedan fitment. Its practical role is to maintain the intended relationship between tire height, width, and 20-inch wheel diameter. Choosing this size starts with confirming that the car is on the 20-inch wheel setup rather than the optional 21-inch package.
The 265/35R21 size follows the same modern metric format, with a 265-millimeter nominal width, a 35-series profile, radial construction, and a 21-inch rim diameter. For the 2024 Audi S8, this size is tied to the Black Optic/Executive Package and is not interchangeable with the 20-inch fitment simply because the section width is the same. Its lower-profile sidewall works with a larger wheel diameter while keeping the overall tire height very close to the other setup. Tire selection here begins with verifying that the vehicle actually carries the 21-inch wheel package.
Sub-model fitment matters on the 2024 Audi S8 because tire size changes with the wheel package. The key step is identifying whether the car is a Base model or an S8 with Black Optic/Executive Package before selecting a tire.
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2024 Audi S8 Base
The 2024 Audi S8 Base uses a 265/40R20 radial tire on a 20-inch wheel setup. Tire selection for this version centers on staying with that size and confirming the car has not been changed to a different wheel diameter after delivery.
The 2024 Audi S8 w/Black Optic/Executive Pkg. uses a 265/35R21 radial tire on a 21-inch wheel setup. That makes wheel confirmation especially important, since a tire chosen for the Base model’s 20-inch package will not suit this configuration.
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.
Frequently Asked Questions
These FAQs focus on the exact tire sizes used on the 2024 Audi S8, how fitment changes by sub-model, and what to verify before replacing tires on either the 20-inch or 21-inch wheel package.
Tire Size & Fitment
What tire size fits a 2024 Audi S8?
The 2024 Audi S8 uses two tire sizes depending on configuration. The Base model uses 265/40R20, while the 2024 Audi S8 w/Black Optic/Executive Pkg. uses 265/35R21. Both are radial tires, but they are built for different wheel diameters and are tied to different sub-model setups.
The most important step is confirming which wheel package is actually on the car before ordering replacements. A quick check of the sidewall size marking and wheel diameter prevents confusion, especially on cars that may have had wheels changed after delivery. Matching the correct size to the correct wheel package helps preserve intended clearance and overall fitment.
What size rim does a 2024 Audi S8 use?
A 2024 Audi S8 uses either a 20-inch or 21-inch rim, depending on sub-model. The Base version pairs with a 20-inch wheel and 265/40R20 tires, while the Black Optic/Executive Package version pairs with a 21-inch wheel and 265/35R21 tires.
Rim diameter needs to match the tire exactly, so a 20-inch tire cannot be mounted on a 21-inch wheel, and the reverse is also true. Before replacing tires, check the actual wheel on the car rather than assuming every S8 uses the same setup. That is especially important on vehicles with seasonal wheel sets or aftermarket changes.
Do all 2024 Audi S8 sub-models use the same tire size?
No. The 2024 Audi S8 does not use one universal tire size across all covered sub-models. The Base model uses 265/40R20, while the 2024 Audi S8 w/Black Optic/Executive Pkg. uses 265/35R21, so fitment changes with the vehicle’s wheel and package configuration.
That difference means tire selection starts with identifying the exact sub-model or physically confirming the wheel diameter and current tire markings. The two setups are close in overall tire height, but they are meant for different rim sizes and should not be treated as the same fitment. Using the right size helps avoid mounting issues and unwanted clearance problems.
Choosing the Right Tire
What should I consider when choosing a tire for a 2024 Audi S8?
Start with the exact tire size already matched to the car’s configuration: 265/40R20 for the Base model or 265/35R21 for the Black Optic/Executive Package version. On a modern performance luxury sedan like the 2024 Audi S8, the main selection factors are correct size, correct rim diameter, and maintaining the intended fitment for the specific wheel package.
After that, compare tires with attention to how the car is used, whether that means regular highway driving, all-season service, or a more performance-focused setup. It is also smart to confirm all four wheels match, especially if the car has had prior tire replacements. A consistent size strategy helps keep the S8 balanced in handling, ride quality, and appearance.
How do I choose between the available tires for a 2024 Audi S8?
Choosing between tires for a 2024 Audi S8 begins with the correct fitment, not brand preference alone. The tire must match either the 265/40R20 or 265/35R21 setup already on the car. Once the size is confirmed, compare options by intended driving use, tread style, seasonal needs, and whether the goal is a more comfort-oriented or more responsive road feel.
It also helps to think about how the car is used most often. A daily-driven S8 may call for a different balance than one used mainly for fair-weather travel. Looking at the current tire wear pattern can be useful too, since unusual wear may point to alignment or suspension issues that should be addressed before the next set goes on.
What rim-fitment details matter when choosing 2024 Audi S8 tires?
For the 2024 Audi S8, the first rim-fitment detail is diameter: the Base model uses a 20-inch setup, while the Black Optic/Executive Package uses a 21-inch setup. Tire size and wheel diameter must match exactly. That makes 265/40R20 and 265/35R21 separate fitments rather than alternate versions of the same mounted tire.
Wheel width and any changes in wheel design also matter, especially if the car has aftermarket wheels or a second wheel set for another season. Checking the tire sidewall against the actual wheel on the car is the safest starting point. It is also wise to confirm that suspension height, brake clearance, and fender clearance remain unchanged before replacing tires.
Restoration & Appearance
Does correct tire fitment matter for a 2024 Audi S8 restoration or preservation-minded build?
Yes. Even on a modern performance sedan like the 2024 Audi S8, correct tire fitment matters when the goal is to preserve the car’s intended stance, wheel-to-tire proportion, and overall presentation. The two S8 configurations here use different sizes, so keeping the proper 20-inch or 21-inch setup is part of keeping the car visually and mechanically consistent.
A preservation-minded approach starts with confirming the exact sub-model and wheel package, then replacing tires with the same size already associated with that configuration. That avoids changing the car’s look through an incorrect sidewall height or rim pairing. Owners seeking exact delivery-era appearance should also compare against the vehicle’s original wheel and tire labels before making changes.
How does tire sizing affect the appearance of a 2024 Audi S8?
Tire sizing has a clear visual effect on the 2024 Audi S8 because the two fitments pair the same nominal width with different sidewall profiles and wheel diameters. A 265/40R20 gives the car a slightly fuller sidewall presence, while a 265/35R21 creates a lower-profile look around a larger-diameter wheel.
That is why choosing by appearance alone can cause problems if the wheel package is not confirmed first. The S8’s proportions depend on the tire and wheel working together as a matched set. If the car has been altered from its original package, compare the actual mounted size, wheel diameter, and visible clearance before replacing tires to avoid an unintended visual mismatch.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2024 Audi S8?
Yes. Modifications can affect tire fitment on a 2024 Audi S8 even when the nominal tire size remains close to stock. Changes such as aftermarket wheels, altered offsets, suspension lowering, brake upgrades, or body modifications can influence how a 265/40R20 or 265/35R21 tire sits inside the wheel opening and how much clearance remains during steering and suspension movement.
That makes it important to inspect the actual setup on the car before replacing tires. A previous owner may have changed wheel diameter or width without changing the model designation. Checking wheel markings, current sidewall size, and visible clearance at full steering lock helps reduce surprises and keeps the next tire choice aligned with the car’s present configuration.
What should I inspect before driving a 2024 Audi S8 on new tires?
Before driving a 2024 Audi S8 on new tires, inspect the mounted size, air pressure, wheel condition, and visible clearance around the suspension and fenders. It is also wise to confirm the tires match across the axle and that there are no signs of rubbing, bead seating issues, or uneven placement on the rim after installation.
A short, careful road test can reveal vibration, pull, or clearance problems before the car returns to normal use. On a heavy, high-performance sedan, alignment and suspension condition matter just as much as the tire itself, so any unusual wear on the old tires should be addressed. Catching those issues early helps the new tires wear more evenly and behave more predictably.
How often should tires on a 2024 Audi S8 be inspected?
Tires on a 2024 Audi S8 should be inspected regularly, not just when tread looks low. A frequent visual check for pressure loss, sidewall damage, punctures, shoulder wear, and uneven tread wear is especially important on vehicles using lower-profile performance-oriented sizes like 265/40R20 and 265/35R21.
Routine inspection becomes even more important if the car is driven at highway speed, parked for long periods, or used on rough pavement. Looking over the tires before longer trips helps catch cuts, bulges, and abnormal wear before they become larger problems. It also gives the owner a chance to confirm that all four tires still match the intended wheel package.
