The 2011 Audi A5 blends crisp German grand-touring style with a chassis that rewards precise steering, stable highway manners, and a properly matched wheel-and-tire package. In this generation, the A5 was as much about clean proportions and everyday refinement as it was about sporty road feel. Tire fitment centers on two radial sizes, 245/40R18 and 255/35R19, so the first decision is confirming which wheel diameter is on the car. From there, the choice shifts to sidewall presentation, tire series, and intended use, whether the goal is a straightforward street setup or a more appearance-driven selection for a well-kept Cabriolet.
Which Tire Size Is Right for The 2011 Audi A5
The 2011 Audi A5 uses two primary tire sizes, and both are radial fitments tied to different wheel diameters. That makes wheel confirmation the first step, since 245/40R18 belongs on an 18-inch rim and 255/35R19 belongs on a 19-inch rim. Once the wheel size is verified, the real choice becomes comparing available tire series, sidewall styles, and the kind of street or specialty use the car will see.
The 245/40R18 size uses modern metric sizing: 245 is the nominal section width in millimeters, 40 is the aspect ratio, R identifies radial construction, and 18 is the rim diameter in inches. On the 2011 Audi A5, this size supports a lower-profile modern road setup on an 18-inch wheel. Available choices include blackwall, redline, and raised white letter sidewalls, with series such as BFGoodrich g-Force, Nitto NT555 G2, Pro-Trac Street Pro III, and M&H Racemaster Drag Radial. This size is worth choosing when the car is equipped with 18-inch wheels and the owner wants the broadest range of visible product styles.
The 255/35R19 size is also a modern metric radial, with a 255-millimeter nominal section width, a 35-series profile, and a 19-inch rim diameter. For the 2011 Audi A5, it represents the 19-inch wheel fitment and keeps the tire choice within a contemporary low-profile format. Product options in this size center on blackwall performance-oriented series from BFGoodrich, including g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A. This size should be evaluated when the car is already running 19-inch wheels and the buyer wants to stay with that larger-diameter setup.
Sub-model fitment is straightforward here because the covered 2011 Audi A5 Cabriolet can use the same two primary tire sizes as the model line overall. The important step is still confirming whether the car has 18-inch or 19-inch wheels before narrowing the tire selection.
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2011 Audi A5 Cabriolet
The 2011 Audi A5 Cabriolet uses radial tire fitments in either 245/40R18 or 255/35R19, depending on the wheel package on the car. That means tire selection begins with wheel-diameter confirmation, then moves to comparing blackwall or specialty sidewall treatments and the available street or performance-oriented tire series.
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 2011 Audi A5 Tires for Sale
Available 2011 Audi A5 tire choices span 245/40R18 and 255/35R19 radial fitments from BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster. Buyers can compare blackwall options across several g-Force and NT555 G2 series, along with redline and raised white letter selections in 245/40R18.
Common 2011 Audi A5 tire questions usually come down to size, wheel diameter, radial fitment, sidewall style, and how to choose between available 18-inch and 19-inch tire options. The answers below focus on practical fitment checks, product selection, and road-use preparation.
Tire Size & Fitment
What tire size fits a 2011 Audi A5?
The 2011 Audi A5 uses two primary tire sizes: 245/40R18 and 255/35R19. Both are radial sizes, and each corresponds to a different wheel diameter, so the correct choice depends on whether the car is equipped with 18-inch or 19-inch wheels.
The key next step is checking the actual wheel setup on the car rather than assuming one size applies to every A5. If the car has been changed from stock-style wheels, confirm both rim diameter and wheel width before selecting a tire, then compare available series and sidewall treatments within the correct size.
What size rim does a 2011 Audi A5 use?
A 2011 Audi A5 uses either an 18-inch or 19-inch rim, depending on which of its two primary tire sizes is on the car. The 245/40R18 size belongs on an 18-inch rim, while the 255/35R19 size belongs on a 19-inch rim.
Rim diameter should be confirmed before anything else because a tire must match the wheel's bead seat diameter exactly. Wheel width matters too, especially when comparing specific tire options, so it is wise to verify both wheel dimensions if the car has aftermarket wheels or if the original setup is uncertain.
Why does the 2011 Audi A5 have more than one tire size?
The 2011 Audi A5 has more than one tire size because it was fitted with different wheel diameters. The two primary fitments are 245/40R18 and 255/35R19, both radial sizes that support different wheel packages within the same model line.
That means the right tire is determined by the wheel on the individual car, not just by year, make, and model alone. Looking at the sidewall of the current tire or measuring the wheel diameter is the quickest way to confirm fitment before comparing product choices, sidewall styles, or performance-oriented tire series.
Choosing the Right Tire
What should I consider when choosing a tire for a 2011 Audi A5?
Start with the correct size and wheel diameter, since the 2011 Audi A5 uses either 245/40R18 or 255/35R19 radial tires. From there, compare the available tire series, sidewall style, rim-width compatibility, and any specialty attributes that match how the car will actually be driven.
A street-driven A5 may call for a very different selection approach than a car built around visual presentation or occasional specialty use. It also helps to compare load figures where they are given, and to make sure the chosen tire suits the wheel width already on the car before narrowing the field further.
What sidewall styles are available for 2011 Audi A5 tires?
Sidewall style depends on the tire size and product line. In 245/40R18, the available choices include blackwall, redline, and RWL, while 255/35R19 options shown here center on blackwall tires.
That makes 245/40R18 the more appearance-driven size if the goal is something other than a standard blackwall presentation. Sidewall style does not replace fitment checks, though, so wheel diameter and overall tire size still come first, with appearance choices becoming relevant only after the correct size is confirmed.
What brands offer tires for the 2011 Audi A5?
Tires for the 2011 Audi A5 are available from BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster, depending on size and intended use. The broadest brand spread appears in 245/40R18, while 255/35R19 options here are centered on BFGoodrich product lines.
Brand should be one selection factor rather than the first one. It makes more sense to confirm the correct size and wheel first, then compare how each brand's available series, sidewall treatment, and specialty focus align with the car's purpose, whether that is normal street driving or something more specific.
Restoration & Appearance
Which tire should I choose for a period-style 2011 Audi A5?
A period-style 2011 Audi A5 tire choice starts with keeping the correct modern radial size for the wheel on the car, either 245/40R18 or 255/35R19. Within those sizes, the more appearance-conscious options are found in 245/40R18, where blackwall, redline, and raised white letter styles are all available.
For a clean, era-appropriate presentation, many owners begin by matching the wheel diameter already fitted to the car and then choosing the sidewall treatment that best suits the overall look. Exact originality questions are best settled with factory literature, window-sticker documentation, or marque-specific references tied to the car's original equipment.
Does correct tire fitment matter for a 2011 Audi A5 restoration?
Correct tire fitment matters on a 2011 Audi A5 restoration because the tire size helps define the car's stance, wheel-to-fender relationship, and overall visual balance. Using the proper 245/40R18 or 255/35R19 radial size for the wheel package keeps the restoration grounded in a believable factory-era presentation.
Appearance is only part of the equation. The wheel diameter, width, and any suspension changes should still be verified before choosing a tire, especially on cars that may have been modified over time, since an attractive sidewall style or well-known series still needs to match the car's physical setup.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2011 Audi A5?
Yes, modifications can affect tire fitment on a 2011 Audi A5 even when the tire size looks close to stock. Aftermarket wheels, changes in wheel width, suspension lowering, alignment changes, or body alterations can all influence how a 245/40R18 or 255/35R19 tire sits and clears.
The safest approach is to verify the actual wheel diameter and width already on the car, then check steering and fender clearance at full lock and normal ride height. A modified A5 may need more attention to physical space than an unaltered one, even when staying within an otherwise familiar tire size.
What should I inspect before driving a 2011 Audi A5 on new tires?
Before driving a 2011 Audi A5 on new tires, inspect tire pressure, bead seating, wheel condition, and valve stems, then look for any visible rubbing risk around the fenders and suspension. It is also smart to confirm that all four tires are the correct size for the wheels installed on the car.
A short, careful test drive can reveal vibration, pulling, or clearance issues that are easier to correct early. Rechecking pressure after initial use and keeping an eye on uneven wear helps protect the tires and the wheel setup, especially on a car with low-profile radial sizes and tight wheel-to-tire relationships.
How often should tires on a 2011 Audi A5 be inspected?
Tires on a 2011 Audi A5 should be inspected regularly, not just when tread appears low. Low-profile radial tires deserve routine checks for pressure loss, irregular wear, cuts, bulges, and sidewall damage, especially if the car sees spirited driving, rough pavement, or long periods of sitting.
A quick visual check before driving and a more thorough inspection at regular service intervals helps catch issues before they become expensive or unsafe. Cars that are stored for part of the year also benefit from periodic pressure checks and a close look at tire aging, even when mileage remains relatively low.
