The 2012 Audi A5 blends clean coupe-and-cabriolet styling with the balanced road manners that made Audi’s modern grand-touring cars so appealing. It sits in a part of the market where wheel and tire choice strongly shapes both appearance and driving character, especially on cars that may now wear replacement wheels or upgraded trim packages. This Audi A5 uses radial tire fitments in two sizes, 245/40R18 and 255/35R19. Available choices range from blackwall performance-oriented series to redline and raised white letter options in 18-inch form. The main decision is confirming which wheel diameter is on the car, then choosing the tire style and series that best matches its use and presentation.
Which Tire Size Is Right for The 2012 Audi A5
The 2012 Audi A5 uses two primary tire sizes, and the first step is confirming whether the car is running 18-inch or 19-inch wheels. Both fitments are radial, but the correct choice depends on the actual wheel diameter on the vehicle, especially since the Cabriolet can use either size. Once wheel size is confirmed, the decision shifts to tire series, sidewall style, and the kind of road use or appearance you want.
245/40R18 is a modern metric radial size in which 245 is the nominal section width in millimeters, 40 is the aspect ratio, R identifies radial construction, and 18 is the wheel diameter in inches. On the 2012 Audi A5, this size suits an 18-inch wheel setup and keeps the selection focused on radial tires. Available choices include BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, with blackwall, redline, and raised white letter sidewall treatments across several series. It is the size to evaluate when the car wears 18-inch wheels and the goal is to balance fitment, style, and intended use carefully.
255/35R19 is a modern metric radial size with a 255-millimeter nominal section width, a 35-series profile, radial construction, and a 19-inch rim diameter. For the 2012 Audi A5, this size belongs to a 19-inch wheel package and points the buyer toward a lower-profile radial fitment than the 18-inch option. BFGoodrich covers this size through several g-Force series, all in blackwall form, giving useful variation within a focused performance-style range. It is the correct size to examine when the car already has 19-inch wheels and the next decision is tire series rather than wheel diameter.
Sub-model fitment is simple here, but wheel size still matters. The 2012 Audi A5 Cabriolet can use either primary tire size, so confirming whether the car has 18-inch or 19-inch wheels is the key step before comparing tires.
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2012 Audi A5 Cabriolet
The 2012 Audi A5 Cabriolet uses the same two radial tire fitments found at the model level, with the actual choice depending on whether the car wears 18-inch or 19-inch wheels. Tire selection then becomes a matter of matching the existing wheel setup to the preferred tire series, sidewall presentation, and intended road use.
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 2012 Audi A5 Tires for Sale
Available 2012 Audi A5 tires center on radial fitments in 245/40R18 and 255/35R19, with choices from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac. Buyers can compare performance-focused series, blackwall presentation, and in 18-inch form, redline or raised white letter sidewall styles.
Common questions for the 2012 Audi A5 usually come down to confirming 18-inch versus 19-inch fitment, understanding the modern metric tire sizes, and choosing among available radial tires by series, sidewall style, and intended use.
Tire Size & Fitment
What tire size fits a 2012 Audi A5?
The 2012 Audi A5 uses two primary tire sizes: 245/40R18 and 255/35R19. Both are radial fitments, and the correct size depends on which wheel diameter is on the car. The A5 Cabriolet can use either of these sizes, so there is not one universal answer unless the wheel setup is confirmed first.
Checking the tire sidewall or measuring the wheel diameter is the simplest place to start. A5s that have changed hands may also have aftermarket wheels, so matching the existing size to the actual rim matters more than assuming every car uses the same setup.
What size rim does a 2012 Audi A5 use?
A 2012 Audi A5 uses either an 18-inch or 19-inch rim, depending on the tire size fitted to the car. The 245/40R18 size belongs to an 18-inch wheel, while the 255/35R19 size belongs to a 19-inch wheel. Both are modern radial fitments rather than vintage numeric or alphanumeric sizes.
Rim diameter is the first fitment detail to verify because an 18-inch tire cannot be mounted on a 19-inch wheel, and the reverse is also true. Once the diameter is confirmed, the next checks are wheel width, tire clearance, and whether the car still has its original wheel setup.
Why does the 2012 Audi A5 have more than one tire size?
The 2012 Audi A5 has more than one tire size because it was fitted with more than one wheel diameter. The two primary sizes, 245/40R18 and 255/35R19, correspond to 18-inch and 19-inch wheel setups. That means tire selection depends on the actual wheel package installed rather than on the model name alone.
This matters most when replacing worn tires on a car that may have had wheel changes over time. Looking at the current wheel and tire combination before ordering helps avoid choosing the right width and profile in the wrong rim diameter.
Choosing the Right Tire
What should I consider when choosing a 245/40R18 tire for a 2012 Audi A5?
Start with the fact that 245/40R18 is an 18-inch radial fitment for the 2012 Audi A5. Within that size, choices vary by tire series, sidewall treatment, rim-width specification, load figures where stated, and intended use. The range includes blackwall performance-style options, plus redline and raised white letter selections for a more distinctive appearance.
Use drives the decision after size is settled. A buyer focused on street performance may compare series such as g-Force, NT555 G2, or Street Pro III differently than someone drawn to a specific sidewall look. Checking the wheel width on the car before narrowing the field helps keep the comparison meaningful.
What sidewall styles are available for 2012 Audi A5 tires?
Sidewall choice is broadest in 245/40R18. That size is available in blackwall, redline, and RWL, with RWL meaning raised white letter. The 255/35R19 fitment stays much more focused, with blackwall options across the available products, so appearance variation is tied closely to wheel size on this Audi A5.
That makes wheel diameter part of the styling decision as well as the fitment decision. Buyers who want a more understated modern look may stay with blackwall, while those building a more customized presentation may be drawn to redline or raised white letter treatment on the 18-inch setup.
What brands offer tires for the 2012 Audi A5?
Tires for the 2012 Audi A5 are available from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac. Brand coverage depends on size, with 245/40R18 offering the widest spread and 255/35R19 centered on BFGoodrich g-Force series choices. All of the available fitments for this vehicle are radial rather than bias-ply.
Brand alone should not be the only filter. It makes more sense to compare the exact size needed, the tire series within that size, sidewall style where available, and wheel-width compatibility. That approach keeps the selection process tied to the actual setup on the car instead of a name on the sidewall.
Restoration & Appearance
Which tire should I choose for a period-style 2012 Audi A5?
A period-style 2012 Audi A5 still begins with the correct modern radial size for the wheel on the car: 245/40R18 or 255/35R19. Because this is a modern Audi rather than a vintage bias-ply application, the appearance decision is less about historical construction and more about choosing a tire series and sidewall treatment that suits the car’s original character.
The 18-inch fitment gives the widest appearance range because it includes blackwall, redline, and raised white letter options. Buyers who want the cleanest factory-inspired presentation usually gravitate toward a restrained sidewall look, while more customized builds may lean into the specialty sidewall choices.
Which sidewall style suits a period-style 2012 Audi A5?
For a period-style 2012 Audi A5, blackwall is the most understated sidewall presentation available across both primary sizes. Redline and raised white letter choices appear in 245/40R18, giving that wheel size more visual character, while the 255/35R19 fitment remains blackwall-focused and closer to a contemporary OEM-style appearance.
The right choice depends on whether the car is being kept close to its original visual tone or pushed toward a more personalized look. Sidewall style should be chosen after wheel diameter is confirmed, since the broader appearance palette belongs to the 18-inch fitment rather than both sizes equally.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2012 Audi A5?
Yes. Modifications can affect tire fitment on a 2012 Audi A5 even when the tire size itself is one of the correct primary sizes. Aftermarket wheels, changes in wheel width, offset differences, suspension lowering, or body alterations can all change how a 245/40R18 or 255/35R19 tire sits and clears the car.
That is why a modified A5 should be checked as an individual setup instead of relying on the model name alone. Wheel diameter is only the first step; clearance at the fender, inner suspension area, and steering range all matter before settling on a replacement tire.
What should I inspect before driving a 2012 Audi A5 on new tires?
Before driving a 2012 Audi A5 on new tires, inspect the wheels for damage, confirm the new tires match the car’s 18-inch or 19-inch rim diameter, and make sure the tires are seated and inflated properly. It also helps to check tread surfaces and sidewalls for shipping damage or installation-related scuffing before the first road miles.
A short follow-up check after initial driving is worthwhile, especially on a car with low-profile tires. Recheck air pressure, look for any rubbing at full steering lock, and pay attention to vibration that could point to a balancing issue or a wheel problem rather than the tire itself.
How often should tires on a 2012 Audi A5 be inspected?
Tires on a 2012 Audi A5 should be inspected regularly, not only when tread appears low. A quick visual check for cuts, bulges, uneven wear, cracking, or air loss is sensible before routine driving, and a more careful inspection is important before longer trips. Low-profile fitments can make small issues easier to feel but not always easier to spot.
Inspection matters even more on a car that is driven infrequently or stored for long periods. Pressure loss, age-related deterioration, and flat-spotting can develop without high mileage, so keeping an eye on condition as well as tread depth helps the tires stay roadworthy and the car feel as it should.
