The 2017 Audi S5 sits in the modern performance-luxury sweet spot, blending sharp coupe and cabriolet styling with the all-weather confidence and road manners buyers expect from an Audi S car. That mix of refinement and athleticism makes tire choice especially important, because the S5 uses low-profile radial sizes that change with wheel package and body style. Primary fitments include 245/40R18, 255/35R19, and, on some Coupe configurations, 265/30R20. Available choices range from blackwall performance radials to restoration-inspired redline and raised white letter options in 18-inch fitment, so the right selection depends on your exact sub-model, wheel diameter, and the look and driving character you want.
Which Tire Size Is Right for The 2017 Audi S5
Three radial tire sizes apply to the 2017 Audi S5, and the first step is confirming both the exact sub-model and wheel diameter. Cabriolet fitment centers on 18-inch or 19-inch wheels, while the Coupe can also use a 20-inch setup. Once that is established, the real decision shifts to tire series, sidewall treatment, and the kind of performance-oriented radial that best matches how the car is driven.
265/30R20 is a metric radial size with a 265-millimeter nominal section width, a very short 30-series profile, and a 20-inch wheel requirement. For the 2017 Audi S5, this fitment appears on Coupe applications using the largest wheel diameter covered here, giving the buyer a distinctly larger-wheel, ultra-low-profile direction. The practical meaning is simple: this size belongs to a specific wheel setup, not to every S5. Before choosing any 20-inch tire, confirm that the car is actually equipped with 20-inch wheels and that wheel width and overall clearance remain appropriate for the current setup.
Sub-model fitment matters on the 2017 Audi S5 because the Cabriolet and Coupe do not share the same full range of wheel and tire packages. Confirming the body style first keeps you from choosing a tire that matches the model line generally but not the exact wheel diameter on your car.
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2017 Audi S5 Cabriolet
The 2017 Audi S5 Cabriolet uses radial fitments in 18-inch and 19-inch sizes rather than the full three-size spread seen across the model line. That makes the main decision one of wheel confirmation first, followed by choosing the right tire series and sidewall presentation within the correct diameter.
The 2017 Audi S5 Coupe spans the broadest fitment range here, covering 18-inch, 19-inch, and 20-inch radial setups. Tire selection starts with confirming which wheel package is on the car now, then narrowing the choice by size, appearance, and the type of performance-oriented radial you want to run.
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 2017 Audi S5 Tires for Sale
Available 2017 Audi S5 tire choices vary by size, brand, and performance series, with BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac represented. The 18-inch fitment offers the widest variety, including blackwall, redline, and raised white letter sidewall treatments across several radial series.
These FAQs focus on the exact tire sizes used on the 2017 Audi S5, how Cabriolet and Coupe fitment differs, what to compare among available radial options, and what to inspect before putting the car back on the road.
Tire Size & Fitment
What tire size fits a 2017 Audi S5?
The 2017 Audi S5 uses three radial tire sizes across the model line: 245/40R18, 255/35R19, and 265/30R20. The Cabriolet uses 245/40R18 and 255/35R19, while the Coupe uses 245/40R18, 255/35R19, and 265/30R20.
The key is matching the tire to the wheel diameter and the exact body style on the car. A tire can be correct for the S5 family but still be wrong for your particular setup, so verify whether the car is a Cabriolet or Coupe and confirm the current wheel size before comparing brands, sidewall styles, or tire series.
What size rim does a 2017 Audi S5 use?
A 2017 Audi S5 can use 18-inch, 19-inch, or 20-inch rims, depending on the fitted tire size. The 245/40R18 size uses an 18-inch rim, 255/35R19 uses a 19-inch rim, and 265/30R20 uses a 20-inch rim.
Wheel diameter should be confirmed before anything else because it determines which tire size family even belongs on the car. After that, check wheel width as well, especially if the S5 has aftermarket wheels, since low-profile radial fitment depends on both diameter and width being appropriate for the chosen tire.
Do all 2017 Audi S5 sub-models use the same tire size?
No. The 2017 Audi S5 Cabriolet uses 245/40R18 and 255/35R19, while the 2017 Audi S5 Coupe adds a 265/30R20 fitment on top of the 18-inch and 19-inch sizes. That means not every S5 sub-model shares the same complete tire-size range.
That difference matters because a tire selected for a Coupe with 20-inch wheels is not the right starting point for a Cabriolet that never used that diameter here. Once the sub-model and wheel size are confirmed, the remaining choices become much easier, including sidewall style, brand, and which radial series best suits the car.
Choosing the Right Tire
What should I consider when choosing a 245/40R18 tire for a 2017 Audi S5?
Start by confirming that your 2017 Audi S5 actually uses the 245/40R18 size on an 18-inch wheel. In this fitment, choices include several radial series and multiple brands, with sidewall treatments that range from blackwall to redline and raised white letter depending on the product.
From there, compare the kind of use the car sees and the presentation you want. A blackwall performance radial keeps a modern appearance, while redline or raised white letter options change the look substantially. Rim-width compatibility, load figures where shown, and whether the car has stock or aftermarket wheels should all be checked before making a final selection.
What sidewall styles are available for 2017 Audi S5 tires?
Sidewall style depends on the tire size you are shopping. In 245/40R18, available styles include blackwall, redline, and RWL, while the 255/35R19 choices shown here are blackwall only. That makes the 18-inch fitment the broadest appearance category for this S5.
The sidewall treatment changes the visual character of the car more than many buyers expect, especially on a modern performance coupe or cabriolet with open wheel design. It is still important to choose the correct size first, then decide whether a traditional blackwall or a more assertive redline or raised white letter look matches the wheel style and overall theme.
What brands offer tires for the 2017 Audi S5?
Available tires for the 2017 Audi S5 come from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac across the applicable sizes shown here. Brand spread varies by size, with the 18-inch 245/40R18 fitment offering the broadest mix and the 19-inch 255/35R19 fitment centered on BFGoodrich options.
Brand is only one part of the decision. The more useful comparison is how each option lines up with the correct size, wheel fitment, sidewall style, and tire series for your exact S5 setup. Once those basics are confirmed, the product grid becomes easier to read because you are comparing relevant differences instead of just brand names.
Restoration & Appearance
Which tire should I choose for a period-style 2017 Audi S5?
A period-style approach for a 2017 Audi S5 usually starts with staying in the correct original fitment family for the wheel diameter already on the car, whether that is 245/40R18, 255/35R19, or 265/30R20. Since this is a modern S-model, the visual theme typically remains rooted in low-profile radial tires rather than vintage construction.
Appearance then comes down to how closely you want the tire to follow the car's factory-era presentation versus creating a more customized look. On 18-inch fitment, redline and raised white letter options are available alongside blackwalls. Buyers pursuing exact originality should compare those choices against marque references and photos from the vehicle's model-year period.
How does tire construction affect the appearance of a restored 2017 Audi S5?
On a 2017 Audi S5, construction affects appearance less through bias-ply versus radial and more through the proportions of the modern radial itself. All primary fitments here are radial, so the visual differences come from wheel diameter, sidewall height, and sidewall treatment rather than a vintage construction change.
That means the look of the car is shaped by whether it sits on 18-inch, 19-inch, or 20-inch wheels and by whether the chosen tire uses blackwall, redline, or raised white letter styling where available. Keeping the correct size for the wheel package preserves the intended stance far better than choosing a different look on the wrong diameter.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2017 Audi S5?
Yes. A 2017 Audi S5 that has aftermarket wheels, altered suspension height, spacers, or brake upgrades can have very different tire-clearance needs than a stock car. That matters most with low-profile sizes like 255/35R19 and 265/30R20, where wheel width and placement become especially important.
Even when the size on the sidewall matches an S5 fitment, modifications can change steering clearance, fender clearance, and how the tire sits on the rim. It is smart to confirm wheel diameter, width, and overall placement before ordering replacements, particularly if the car no longer uses its original wheel and suspension setup.
What should I inspect before driving a 2017 Audi S5 on new tires?
Before driving a 2017 Audi S5 on new tires, inspect the wheels for damage, verify the tires match the correct size for the car's wheel diameter, and check inflation pressure carefully. It also helps to look over suspension and steering components, especially on a performance car that may be sensitive to alignment and wear.
A short check for rubbing at full steering lock and through suspension travel is worthwhile after installation, particularly on larger wheel packages. After the first few drives, recheck pressure and watch for any sign of uneven wear or vibration. Those simple steps help confirm that the tire, wheel, and chassis are all working together properly.
How often should tires on a 2017 Audi S5 be inspected?
Tires on a 2017 Audi S5 should be inspected regularly, not just when tread looks low. A quick visual check for cuts, punctures, sidewall damage, uneven wear, and pressure loss is smart before routine driving, and a more careful inspection makes sense any time the car has been stored or driven hard.
Performance-oriented, low-profile tires can reveal alignment or wheel issues quickly, so frequent checks are part of good ownership. Look closely after hitting potholes or curbs, and pay attention to vibration, pull, or new road noise. Catching those issues early can prevent premature wear and helps keep the S5 predictable on the road.