Audi S4 Tires

Audi S4 fitments in this range are 215/60R15 and 225/50R16 for 1992-1994, 225/45R17 for 2000-2002, 235/40R18 for 2004-2009, 245/40R18 for 2010-2016 and 2018-2022, 255/35R19 for 2010-2016 and 2020-2025, and 245/35R19 for 2018-2019. Each size’s last number is the wheel diameter in inches, so these applications span 15-inch, 16-inch, 17-inch, 18-inch, and 19-inch rims.

That means the correct tire for an Audi S4 depends first on year, then on the actual wheel package fitted to the car. If your Audi S4 falls in a year with two listed sizes, check the wheel diameter stamped on the wheel or measure the tire and wheel combination already on the car before deciding which fitment belongs there.

The 1992 Audi S4 has two listed sizes because both 215/60R15 and 225/50R16 appear for that year. That is a rim-diameter split, not a simple alternate sidewall style, since one size fits a 15-inch wheel and the other fits a 16-inch wheel. The same pattern continues through 1994.

A 1992 Audi S4 owner should identify the actual wheel diameter before looking at tread pattern, brand, or sidewall treatment. Once the wheel size is confirmed, the correct tire choice becomes much narrower, and you can then compare the available radial options in the proper size rather than trying to choose between two fitments that do not interchange on the same rim.

Audi S4 applications here use several rim diameters over time: 15-inch and 16-inch in 1992-1994, 17-inch in 2000-2002, 18-inch in 2004-2009, 18-inch or 19-inch in 2010-2016, 18-inch or 19-inch in 2018-2022, and 19-inch only in 2023-2025. The rim diameter is the final number in each metric size code, so 225/45R17 fits a 17-inch wheel and 255/35R19 fits a 19-inch wheel.

Because the Audi S4 spans multiple generations, wheel swaps are common, and a year alone is not always enough to identify the tire. The safest approach is to verify the wheel diameter on the actual car, then match the tire size to that diameter before comparing section width, aspect ratio, or brand.

On an Audi S4, a size like 245/40R18 means the tire is 245 millimeters wide, has a sidewall height equal to 40 percent of that width, uses radial construction, and fits an 18-inch wheel. A size like 255/35R19 follows the same pattern, with a 255-millimeter section width, 35-series aspect ratio, and 19-inch rim diameter. Every listed Audi S4 size in this set is a radial metric format.

Understanding the code helps explain why similar-looking Audi S4 sizes are not interchangeable without considering the wheel. A 245/40R18 and a 245/35R19 may share the same width, but they fit different rim diameters and present different sidewall proportions, so they should be matched to the proper wheel package rather than substituted casually.

A 2011 Audi S4 has two listed sizes: 245/40R18 and 255/35R19. Those correspond to different wheel diameters, so the correct choice depends on whether the car is fitted with 18-inch or 19-inch wheels. Both are radial metric fitments, but they are not interchangeable on the same rim.

Start by checking the existing tire sidewall or the wheel itself for diameter, then compare that to the size ranges offered for the 2011 Audi S4. If the car has changed hands or been modified, confirm that the wheel and tire combination currently installed matches the intended setup before replacing one tire or moving to a full set.

Audi S4 tire options here include Blackwall, RWL, Redline, and Wide Whitewall sidewall styles, depending on size. Blackwall appears across every size group, while RWL and Redline show up in selected 15-inch, 17-inch, and 18-inch offerings. Wide Whitewall appears in one 215/60R15 option.

Most Audi S4 owners looking for an appearance close to later factory-style performance tires will stay with blackwall, especially on 16-inch through 19-inch applications. RWL, Redline, and whitewall choices can be useful for a custom look or a period-inspired visual statement on earlier cars, but they should still be selected only after the correct size and wheel diameter are confirmed.

Audi S4 tires in these sizes are offered by American Classic, BFGoodrich, Dunlop, Avon, Vredestein, Nitto, Pro-Trac, Michelin, and M&H Racemaster. Brand coverage varies by size, with the earliest 15-inch fitment showing the broadest mix and several later sizes centered around BFGoodrich and Nitto radial performance lines.

Brand selection for an Audi S4 should come after fitment selection, not before it. Once you know the correct size for the car’s year and wheel package, compare brands by intended use, sidewall appearance, and rim-width compatibility so the tire suits both the car’s stance and the way it will actually be driven.

Audi S4 tire choices here include several distinct series, such as Asymmetrical Tread, Radial T/A, Sport Classic, CR6ZZ, Sprint Classic, g-Force Sport Comp 2, g-Force Comp 2 AS, Michelin Pilot Sport, Nitto NT555 G2, g-Force Phenom T/A, Street Pro III, and Drag Radial. Those series reflect different performance intentions, from vintage-style radials and touring-oriented designs to more aggressive street-performance and specialty drag-use options.

For an Audi S4 that sees normal road use, the practical decision is to narrow the field by correct size first and then by the car’s mission. A period-look early car may favor classic-style sidewall treatments, while a later S4 may call for a straightforward blackwall performance radial matched to the proper wheel width and driving style.

An Audi S4 that sits for extended periods should be stored on clean, properly inflated tires in a cool, dry, dark environment away from direct sunlight, ozone sources, and large temperature swings. Keeping the car on a clean garage floor and avoiding prolonged exposure to solvents or petroleum residue helps preserve the rubber and sidewalls.

If an Audi S4 will be parked for months at a time, move it occasionally to avoid flat spotting and inspect the tread contact area when returning it to service. Owners using lower-profile 18-inch or 19-inch fitments should pay particular attention to sidewall condition, since shorter sidewalls can hide age-related changes less obviously than taller performance-touring tires.

Tires on an Audi S4 should be inspected regularly for pressure, sidewall damage, uneven wear, cracking, punctures, and signs of impact damage from potholes or curb contact. A sensible routine is to check them before any long drive and at regular intervals even if the car is used only occasionally.

An Audi S4 places real performance demands on its tires, so inspection is about more than tread depth alone. Watch for inner-edge wear, feathering, or shoulder wear that may suggest alignment, wheel-width, or suspension issues, especially on stagger-free performance fitments where a subtle handling change can be the first sign that the tire condition needs attention.

Audi S4 tires should be replaced when age, cracking, sidewall damage, repeated air loss, impact breaks, or hardened rubber make them unsuitable for continued service, even if visible tread remains. Tread depth alone is not enough on a performance sedan, because an older tire can lose grip, wet-weather confidence, and structural integrity long before it looks worn out.

For an Audi S4 that sees occasional use, age-related condition matters as much as mileage. If the car has been stored for long periods or comes with older tires of uncertain service history, have the set evaluated carefully and replace them as a set when needed so handling balance, braking feel, and traction remain consistent from axle to axle.

The listed Audi S4 tires are modern radial designs, and many are intended for normal street use when fitted in the correct size and used in sound condition. Safety depends on proper sizing, correct wheel diameter, suitable rim width, inflation, alignment, and the tire’s overall age and condition. A tire that is correct in size but mismatched to the wheel or worn unevenly is not a safe solution.

For an Audi S4, public-road confidence starts with choosing the exact fitment for the car’s year and wheel package, then confirming the tire suits how the car is used. A street-driven S4 should be on a matched set with even wear and consistent performance characteristics, rather than a mix of random sizes or specialty tires used outside their intended purpose.

Before driving an Audi S4, check tire pressure, visible sidewall and tread condition, valve stems, and whether the tires show cuts, bulges, cords, or unusual wear patterns. Also confirm that all four tires match the intended size for the wheel package and that the tires clear suspension and bodywork without rubbing.

That quick inspection matters on an Audi S4 because the car’s performance envelope can expose tire problems quickly, especially with lower-profile 18-inch and 19-inch sizes. If the car feels nervous, pulls under braking, tramlines unusually, or reacts harshly after a pothole strike, inspect the tires and wheels before continuing regular road use.

An Audi S4 should be driven at speeds appropriate to the exact tire fitted, the tire’s condition, and the road environment rather than the car’s capability alone. Many of the listed fitments are performance-oriented radials, but safe speed always depends on the specific tire, inflation state, weather, and whether the set is evenly matched and in healthy condition.

In practical terms, an Audi S4 owner should let the tire condition set the limit, not the badge on the trunk. Fresh, properly matched tires on correct wheels support the car far better than aged or mismatched rubber, so any uncertainty about age, wear, or previous impact damage should be resolved before sustained high-speed driving is even considered.