The 2014 Audi S5 sits in the modern grand-touring side of the Audi performance world, blending sharp coupe and cabriolet styling with the planted road manners buyers expect from an S-badged car. It is a vehicle where wheel and tire choice plays a visible role in both stance and response. This S5 uses radial tire fitments in 245/40R18, 255/35R19, and, on coupe applications, 265/30R20. Available choices range from blackwall performance radials to redline and raised white letter options in select 18-inch sizing. The key is matching the exact sub-model and wheel diameter first, then choosing the tire style and series that best suits road use and appearance.
Which Tire Size Is Right for The 2014 Audi S5
The 2014 Audi S5 uses three primary tire sizes, and the right one depends on both sub-model and wheel diameter. Cabriolet models use 18-inch or 19-inch fitments, while coupe models add a 20-inch option, so the first step is confirming the exact body style and the wheels currently on the car. Once that is settled, the decision shifts to tire series, sidewall style, and the type of road use the car will see.
Fit(s): Premium Plus Cabriolet, Premium Plus Coupe, Prestige Cabriolet, and Prestige Coupe
Construction: Radial|Rim: 18 in
245/40R18 is a metric radial size with a 245-millimeter section width, a 40-series profile, and an 18-inch rim diameter. On the 2014 Audi S5, it is one of the standard modern radial fitments and appears across both coupe and cabriolet applications. This size has the broadest product variety here, including blackwall performance tires from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, plus redline and RWL treatments in the Street Pro III series. It is the size to evaluate when an 18-inch wheel setup is already in place and appearance or tire character matters as much as basic fitment.
Fit(s): Premium Plus Cabriolet, Premium Plus Coupe, Prestige Cabriolet, and Prestige Coupe
Construction: Radial|Rim: 19 in
255/35R19 is a metric radial size that uses a 255-millimeter section width, a 35-series profile, and a 19-inch rim. For the 2014 Audi S5, it serves as a lower-profile 19-inch fitment used on both coupe and cabriolet versions. Available choices in this size center on blackwall radial performance tires from BFGoodrich across several g-Force series. This size makes sense when the car is already equipped with 19-inch wheels and the goal is to stay with the intended wheel diameter while comparing series differences, rim-width compatibility, and other product-level specifications.
265/30R20 is a metric radial size with a 265-millimeter section width, a 30-series profile, and a 20-inch rim diameter. On the 2014 Audi S5, this fitment is tied to coupe applications rather than the cabriolet range shown here. Its role in the lineup is straightforward: it belongs to cars running a 20-inch wheel package, so wheel confirmation matters before anything else. This is the size to focus on when the coupe already wears 20-inch wheels and the buyer needs to stay aligned with that larger-diameter setup rather than shifting to an 18-inch or 19-inch tire choice.
Tire fitment on the 2014 Audi S5 varies by sub-model because coupe and cabriolet versions do not share the same full range of wheel sizes. Checking the exact trim and body style matters before selecting tires, especially when comparing 18-inch, 19-inch, and 20-inch wheel setups.
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2014 Audi S5 Premium Plus Cabriolet
The 2014 Audi S5 Premium Plus Cabriolet uses the 18-inch and 19-inch radial fitments rather than the 20-inch option. Tire selection here starts with confirming which wheel package is on the car, then comparing available performance-oriented products within the correct diameter.
The 2014 Audi S5 Premium Plus Coupe has the widest fitment range, covering 18-inch, 19-inch, and 20-inch radial sizes. That makes wheel diameter the first question, followed by whether the goal is a straightforward blackwall performance tire or a more distinctive sidewall look in the 18-inch category.
The 2014 Audi S5 Prestige Cabriolet shares the same basic tire-fitment pattern as the other cabriolet, using 18-inch or 19-inch radial sizes. Choosing correctly means verifying the wheels on the car first, then selecting the tire series and sidewall presentation that match how the car is driven and shown.
The 2014 Audi S5 Prestige Coupe can use 18-inch, 19-inch, or 20-inch radial fitments, so it is important to confirm the actual wheel setup before ordering tires. Once diameter is settled, the buying decision becomes a comparison of product series, blackwall versus specialty sidewall styling, and other tire characteristics within that size.
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 2014 Audi S5 Tires for Sale
Available 2014 Audi S5 tire choices center on radial performance products in 18-inch and 19-inch sizes. Buyers can compare BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac options by tire series, blackwall versus redline or RWL sidewalls, and size-specific rim-width specifications.
The most common 2014 Audi S5 tire questions come down to sub-model fitment, wheel diameter, radial size selection, sidewall choices in 18-inch applications, and the checks to make before putting the car back on the road.
Tire Size & Fitment
What tire size fits a 2014 Audi S5?
The 2014 Audi S5 uses three primary radial tire sizes: 245/40R18, 255/35R19, and 265/30R20. Cabriolet models use 245/40R18 or 255/35R19, while coupe models use those same sizes and also add the 265/30R20 fitment.
The practical decision is not just the year and model name, but the exact sub-model and wheel diameter already on the car. A coupe can have a wider fitment range than a cabriolet, so checking the current wheel size before comparing products prevents choosing the right tire size for the wrong wheel package.
What size rim does a 2014 Audi S5 use?
The 2014 Audi S5 uses 18-inch, 19-inch, and 20-inch rim diameters depending on sub-model and tire size. The 245/40R18 tire fits an 18-inch rim, 255/35R19 fits a 19-inch rim, and 265/30R20 fits a 20-inch rim.
Rim diameter should be confirmed from the wheels on the car rather than assumed from the model alone. That matters even more on an S5 that may have been changed from its original wheel package, because an 18-inch tire cannot be mounted on a 19-inch or 20-inch wheel, and the reverse is equally true.
Why does the 2014 Audi S5 have more than one tire size?
The 2014 Audi S5 has more than one tire size because fitment varies by body style and wheel package. Cabriolet versions use 18-inch and 19-inch sizes, while coupe versions can also use a 20-inch setup, which adds the 265/30R20 fitment.
That means the correct tire is tied to the exact configuration of the car rather than the S5 name by itself. Anyone replacing tires should verify whether the car is a coupe or cabriolet and confirm the actual wheel diameter before moving on to brand, sidewall style, or tire-series comparisons.
Choosing the Right Tire
What should I consider when choosing a 245/40R18 tire for a 2014 Audi S5?
A 245/40R18 choice for the 2014 Audi S5 starts with making sure the car is using the 18-inch wheel setup. In this size, the available options vary by brand, tire series, sidewall style, rim-width specification, and intended character, including performance-oriented blackwall radials and specialty-style choices such as redline and RWL.
That makes 245/40R18 the most appearance-sensitive and comparison-heavy size in the S5 lineup here. The next step is deciding whether the priority is straightforward road use, a more aggressive visual presentation, or a specialized application, then checking that the tire's rim-width range and other specifications suit the wheels already on the car.
What sidewall styles are available for 2014 Audi S5 tires?
Sidewall style depends on tire size. In 245/40R18, available sidewall treatments include blackwall, redline, and RWL, while the 255/35R19 products shown here are blackwall tires.
That means sidewall appearance can become part of the buying decision if the S5 runs 18-inch wheels, especially on a car where the owner wants a more distinctive visual treatment. Anyone moving between sizes should keep in mind that sidewall style choices can narrow or expand with wheel diameter, so appearance and fitment need to be evaluated together.
What brands offer tires for the 2014 Audi S5?
Available brands for the 2014 Audi S5 include BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac. Brand choice varies by size, with the 245/40R18 fitment offering the broadest spread and the 255/35R19 options centered on BFGoodrich performance radial lines.
The useful comparison is not brand name alone, but how each option aligns with the car's wheel size, sidewall preference, and intended use. A buyer choosing among these tires should compare the exact size first, then look at tire series, rim-width compatibility, load figures where stated, and the overall look the car is meant to carry.
Restoration & Appearance
Which tire should I choose for a period-style 2014 Audi S5?
A period-style 2014 Audi S5 usually starts with keeping the wheel diameter and tire size already appropriate to the car's setup, then choosing a tire that matches the look you want. In 245/40R18, that can mean blackwall for a restrained factory-inspired presentation or a more expressive option such as redline or RWL.
Because the S5 is a modern performance Audi rather than a vintage restoration car, appearance choices tend to be about preserving the era's character instead of duplicating an older collector-tire look. The most convincing result usually comes from matching sidewall treatment to the car's wheels, stance, and overall finish rather than chasing novelty alone.
How does tire construction affect the appearance of a restored 2014 Audi S5?
Tire construction is simple on the 2014 Audi S5 because the primary fitments here are all radial. The visible appearance difference comes less from bias-ply versus radial and more from profile, wheel diameter, and sidewall styling such as blackwall, redline, or raised white letter treatment in the 18-inch size.
On a clean, well-kept S5, tire choice can change the car's visual character quickly. A blackwall tends to keep the look more contemporary and understated, while redline or RWL creates a more stylized presentation, so the better choice depends on whether the goal is subtle modern performance or a more customized period-inspired finish.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2014 Audi S5?
Yes. Modifications can affect tire fitment on a 2014 Audi S5 even when the tire size itself is correct for the model range. Aftermarket wheels, altered offsets, suspension changes, lowering, or body modifications can all change clearance at the fender, inner wheelhouse, or steering components.
That is especially important on lower-profile 19-inch and 20-inch combinations, where small setup changes can have a bigger effect on space around the tire. A modified S5 should be checked at full steering lock and through suspension movement so the chosen size works with the car's actual wheel and suspension package, not just the factory-style fitment range.
What should I inspect before driving a 2014 Audi S5 on new tires?
Before driving a 2014 Audi S5 on new tires, inspect the wheels for damage, confirm the correct tire size and rim diameter, and make sure inflation is set properly for the application. It also helps to check alignment condition, brake clearance, and whether the tires seat correctly on the wheels without vibration or air loss.
A quick visual check after the first short drive is worthwhile as well. Look for rubbing marks, uneven contact, or any sign that the tires are too close to suspension or body components, particularly if the car has non-stock wheels or ride height changes. Catching those issues early protects both the tires and the car.
How often should tires on a 2014 Audi S5 be inspected?
Tires on a 2014 Audi S5 should be inspected regularly rather than only at replacement time. A monthly check for pressure, tread condition, sidewall damage, punctures, and uneven wear is a sensible routine, and the tires deserve extra attention before highway trips or after the car has been stored for a while.
Performance-oriented, lower-profile tires can reveal alignment or suspension issues quickly, so wear patterns matter as much as remaining tread. Any signs of cracking, bulges, repeated air loss, or shoulder wear should be addressed early, since those conditions can point to wheel damage, setup problems, or aging that affects safe road use.
