Audi S5 Sportback (All-New) Tires

Audi S5 Sportback (All-New) uses two tire sizes in 2025: 245/40R19 and 245/35R20. The 245/40R19 size fits 19-inch rims, while the 245/35R20 size fits 20-inch rims. Both are radial metric sizes, and both are listed for the same model year rather than for separate production eras.

The practical difference is wheel package, not a broad year change. Start by reading the tire sidewall already on the car or measuring the wheel diameter directly, then match that number first before comparing tire series or brand. A 19-inch fitment and a 20-inch fitment are not interchangeable just because they belong to the same Audi S5 Sportback (All-New) year.

On Audi S5 Sportback (All-New), 245/40R19 means the tire is 245 millimeters wide, has a 40-series aspect ratio, uses radial construction, and mounts on a 19-inch wheel. That size appears in 2025. The listed products for this fitment include radial tires from BFGoodrich, with specified rim-width compatibility of 8.0 to 9.5 inches where stated.

That decoding matters because every part of the code affects fit and stance. If your Audi S5 Sportback (All-New) is equipped with 19-inch wheels, this size preserves the intended relationship between tread width, sidewall height, and wheel diameter. It should be matched as a complete package, not partially substituted by changing only one number.

A 2025 Audi S5 Sportback (All-New) has 2 tire sizes listed because the model appears with two different wheel diameters: 19 inches and 20 inches. The sizes are 245/40R19 for the 19-inch fitment and 245/35R20 for the 20-inch fitment. This is a rim-diameter split, not a bias-ply versus radial split or a vintage-style sizing transition.

That means the deciding factor is the actual wheel on the car. If the car has already had wheel changes, replacement by year alone can be misleading, so verify the wheel diameter and the current sidewall marking before choosing. Once the diameter is confirmed, the correct size becomes straightforward.

Audi S5 Sportback (All-New) uses two rim diameters in 2025: 19 inches and 20 inches. The 245/40R19 size mounts on a 19-inch rim, and the 245/35R20 size mounts on a 20-inch rim. Those diameters are built directly into the metric tire size code.

Rim diameter is the quickest way to avoid a mismatch on this model. Before comparing load rating, sidewall profile, or tire series, confirm whether the car is on 19s or 20s and then stay within the matching size family. That single check narrows the fitment correctly faster than relying on the model year by itself.

A 2025 Audi S5 Sportback (All-New) can use either 245/40R19 or 245/35R20, so the correct size depends on the wheel diameter fitted to the car. The 19-inch wheel takes 245/40R19, and the 20-inch wheel takes 245/35R20. Both sizes are modern radial fitments offered for the same model year.

Begin with the tire sidewall currently on the car, then verify that the wheel diameter matches the code. If the car has been changed from its original wheel package, the actual wheel matters more than assumptions tied to trim or appearance. After that, compare tire series and brand choices within the confirmed size.

Audi S5 Sportback (All-New) tire options in the listed sizes are offered with Blackwall sidewalls. That applies across both 245/40R19 and 245/35R20 products. No alternate whitewall or specialty sidewall treatment appears in the available options for this model group.

Blackwall is consistent with the modern high-performance character of Audi S5 Sportback (All-New). For most owners, the real choice is not sidewall styling but tread category and series within the correct size. Once size and wheel diameter are confirmed, sidewall appearance is already effectively decided by the available offerings.

Audi S5 Sportback (All-New) tire options are available here from BFGoodrich and Nitto. BFGoodrich appears in both the 19-inch and 20-inch fitments, while Nitto appears in the 245/35R20 size. All listed products for this model group are radial tires in modern performance-oriented series.

Brand selection should come after you establish the correct wheel diameter and size. Once that is settled, compare the tire series offered within that exact fitment rather than trying to force a preferred brand into the wrong diameter. The 20-inch fitment currently gives the broader brand spread between the two sizes.

Audi S5 Sportback (All-New) tire options include g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, and Nitto NT555 G2. These are all radial tire series, but they represent different product families rather than one identical design repeated across sizes. Some series appear in both 19-inch and 20-inch fitments, while Nitto NT555 G2 appears in the 245/35R20 size.

That means your decision can be narrowed in stages. First confirm whether the car uses the 19-inch or 20-inch fitment, then compare the available series within that size for the kind of use you have in mind, whether that is more seasonal flexibility or a more overt performance focus. Size comes first; series choice comes second.

A Audi S5 Sportback (All-New) should be stored on a clean, dry surface away from direct sunlight, ozone sources, and major temperature swings. Modern radial performance tires age more slowly when they are kept out of heat and prolonged UV exposure. Maintaining proper inflation during storage also helps protect the tire shape and reduces flat-spotting.

If the car will sit for long periods, move it occasionally or support it in a way that reduces continuous load on one contact patch. Performance-oriented low-profile tires can show temporary flat spotting after sitting, especially in cooler conditions. Good storage habits preserve ride quality as much as tread life on a lightly used Audi S5 Sportback (All-New).

Tires on a Audi S5 Sportback (All-New) should be inspected regularly even if the car is driven infrequently. Check inflation pressure, sidewall condition, tread wear pattern, and any cuts, bulges, or impact damage before longer drives and at routine intervals throughout the season. Low-profile radial tires can hide damage from potholes or curb contact until a close visual inspection is made.

A practical routine is to inspect the tires whenever the car is washed, fueled, or prepared for a trip. Uneven wear can also point to alignment or suspension issues rather than a tire problem alone. Catching those signs early helps protect both the tires and the sharper handling expected from Audi S5 Sportback (All-New).

Tires on a Audi S5 Sportback (All-New) should be replaced when age, cracking, impact damage, or hardening becomes a concern, even if the tread still looks usable. Performance tires can lose grip and ride quality as the rubber ages long before they appear worn out by tread depth alone. Any vibration, sidewall injury, or repeated air loss deserves prompt evaluation.

Collector-minded owners sometimes focus on mileage, but calendar age matters just as much on a low-use modern performance car. If the tires have spent years on the car, a preventive replacement schedule is often wiser than waiting for visible failure. That approach preserves the braking and handling balance Audi S5 Sportback (All-New) depends on.

The listed Audi S5 Sportback (All-New) tires are modern radial road tires in current production-oriented performance series, so they are intended for normal public-road use when correctly sized, properly inflated, and mounted on the right wheel diameter. The key fitment issue on this model is choosing between the 19-inch and 20-inch size families correctly. A mismatch in rim diameter makes the tire unusable regardless of brand.

Safe road use also depends on vehicle condition beyond the tire itself. Check alignment, suspension condition, brake performance, and tire age before assuming the car is ready for sustained driving. On a modern high-performance hatchback-sedan like Audi S5 Sportback (All-New), tire condition and chassis condition work together much more closely than on a casual commuter.

Before driving a Audi S5 Sportback (All-New), check inflation pressure, visible tire damage, tread condition, and whether all four tires match the wheel diameter fitted to the car. Confirm that a 19-inch wheel carries 245/40R19 or a 20-inch wheel carries 245/35R20. Also look for uneven wear that may signal alignment or suspension issues.

A quick walkaround can prevent most avoidable tire problems. Pay attention to curb rash, pothole strikes, and any recent wheel changes, since low-profile fitments are less forgiving of impacts. If anything feels off during the first miles, especially vibration or pulling, stop and inspect before continuing.

Appropriate speed for a Audi S5 Sportback (All-New) should always remain within legal limits and within the capability of the exact tire fitted to the car. The listed products include W- and Y-rated examples in the available sizes, which indicates modern performance capability when the tires are correctly installed and in sound condition. Even so, tire age, pressure, and road conditions can reduce real-world safety margins quickly.

For practical driving, treat the tire's service condition as more important than the theoretical speed symbol alone. An older tire, an underinflated tire, or a tire damaged by impact should never be asked to deliver the performance suggested by its sidewall code. Responsible use means matching speed to conditions, maintenance, and the actual state of the Audi S5 Sportback (All-New).