The 2009 Audi A5 Quattro arrived as a sleek grand-touring coupe that blended Audi’s modern design language with all-wheel-drive confidence and a distinctly upscale road feel. For many owners, it sits at the crossroads of daily usability and enthusiast appeal, which makes tire choice especially important to how the car looks and responds. This A5 Quattro uses radial tires in two fitments, 245/40R18 and 255/35R19, depending on wheel setup. Available choices lean toward modern performance-oriented blackwall tires, with 245/40R18 also offering Redline and raised white letter styling. The key is confirming the wheel diameter already on the car, then choosing a tire that matches your driving use and overall presentation.
Which Tire Size Is Right for The 2009 Audi A5 Quattro
The 2009 Audi A5 Quattro uses two primary tire sizes, and the first step is confirming whether the car is on 18-inch or 19-inch wheels. Both sizes are radial fitments used across the covered sub-models, so the real decision starts with wheel diameter and then moves to tire series, sidewall style, and the type of road use the car will see.
245/40R18 is a metric radial size where 245 identifies the nominal section width in millimeters, 40 is the aspect ratio, R designates radial construction, and 18 is the rim diameter in inches. On the 2009 Audi A5 Quattro, this size supports a modern low-profile performance fitment with an 18-inch wheel. Available choices include BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, with blackwall, Redline, and raised white letter sidewall treatments depending on the tire series. This size is the right one to evaluate when the car is already equipped with 18-inch wheels and the goal is to balance appearance, performance character, and wheel compatibility.
255/35R19 is a metric radial size where 255 is the nominal section width in millimeters, 35 is the aspect ratio, R marks radial construction, and 19 denotes the wheel diameter in inches. For the 2009 Audi A5 Quattro, it represents the lower-profile 19-inch fitment and should only be considered with the correct wheel diameter. Available products center on BFGoodrich performance-oriented blackwall tires across several g-Force series. This size is the one to focus on when the car already wears 19-inch wheels and the owner wants to preserve the intended wheel-and-tire relationship without mixing fitments.
Fitment is straightforward across the covered 2009 Audi A5 Quattro sub-models because both use the same two radial tire sizes. The main thing to verify is not the engine designation, but whether the car is on 18-inch or 19-inch wheels before selecting a tire.
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2009 Audi A5 Quattro 2.0
The 2009 Audi A5 Quattro 2.0 uses the same two radial fitments found across this model range, so the tire decision comes down to the wheel diameter currently on the car. Once that is confirmed, selection can focus on tire series, sidewall appearance, and intended street or specialty use.
The 2009 Audi A5 Quattro 3.2 follows the same fitment pattern, with both primary radial sizes applying depending on wheel setup. That makes wheel confirmation the first step, followed by comparing available product lines, blackwall-only 19-inch choices, or the added sidewall variety available in 18-inch fitment.
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 2009 Audi A5 Quattro Tires for Sale
Available 2009 Audi A5 Quattro tire choices center on radial performance fitments in 245/40R18 and 255/35R19. Buyers can compare BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac options by tire series, blackwall versus Redline or raised white letter styling, and wheel-width compatibility.
Owners shopping tires for a 2009 Audi A5 Quattro usually need to sort out wheel diameter first, then compare available radial tire choices, sidewall styles, and practical fitment checks for road use.
Tire Size & Fitment
What tire size fits a 2009 Audi A5 Quattro?
The 2009 Audi A5 Quattro uses two primary tire sizes: 245/40R18 and 255/35R19. Both are radial fitments, and both appear across the covered A5 Quattro sub-models, so the car’s wheel setup determines which size belongs on a particular vehicle.
That means the first check is the actual wheel diameter on the car, not just the model name. An A5 Quattro on 18-inch wheels should stay with the 245/40R18 fitment, while a car on 19-inch wheels should use the 255/35R19 size. If the car has been modified with aftermarket wheels, verify wheel dimensions and clearance before choosing a tire.
What size rim does a 2009 Audi A5 Quattro use?
A 2009 Audi A5 Quattro uses either an 18-inch or 19-inch rim, depending on which of the two primary tire sizes is on the car. The 245/40R18 fitment uses an 18-inch rim, while the 255/35R19 fitment uses a 19-inch rim.
Rim diameter should be confirmed before anything else because a tire must match the wheel’s diameter exactly. It also helps to review wheel width when comparing products, since some 18-inch and 19-inch tires are intended for different width ranges. That becomes especially important if the car has aftermarket wheels or a non-stock wheel-and-tire package.
Do all 2009 Audi A5 Quattro sub-models use the same tire size?
The covered 2009 Audi A5 Quattro 2.0 and 3.2 sub-models share the same two tire sizes: 245/40R18 and 255/35R19. Both sub-models use radial construction, so fitment does not split by engine designation alone.
In practical terms, that keeps the decision focused on the wheels actually installed on the car. The 2.0 or 3.2 badge does not automatically tell the full story if wheels have been changed over time. Looking at the current tire sidewall or measuring wheel diameter is the simplest way to confirm which fitment to shop before comparing brands or tire series.
Choosing the Right Tire
What should I consider when choosing a 245/40R18 tire for a 2009 Audi A5 Quattro?
A 245/40R18 tire for a 2009 Audi A5 Quattro should first match the car’s 18-inch wheel setup, then be compared by construction details, intended use, and product character. Choices in this size include performance-oriented street radials, a drag-focused radial option, and sidewall variations ranging from blackwall to Redline and raised white letter.
That makes this size especially dependent on how the car is used and how the owner wants it to look. Some products also show different rim-width specifications, load figures, and tire weights, which can matter when comparing one option to another. Matching the tire to the car’s wheel width and intended use is more important than choosing by appearance alone.
What sidewall styles are available for 2009 Audi A5 Quattro tires?
Sidewall choices for the 2009 Audi A5 Quattro include blackwall, Redline, and RWL, with the broader variety appearing in the 245/40R18 size. The 255/35R19 fitment centers on blackwall performance tires, while the 18-inch fitment adds more visual variety through specialty sidewall treatments.
That distinction matters if appearance is part of the goal, especially on a customized or enthusiast-owned A5. Redline and raised white letter treatments create a more expressive look than a standard blackwall, but they should still be selected in the correct tire size and for the correct wheel diameter. Style should follow fitment, not replace it.
What brands offer tires for the 2009 Audi A5 Quattro?
Tires for the 2009 Audi A5 Quattro are available from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, depending on size. The 245/40R18 fitment has the broadest brand spread, while the 255/35R19 fitment is represented by BFGoodrich performance series options.
Brand is only one part of the decision. It helps to compare each tire’s series, sidewall treatment, wheel-width compatibility, and intended use before narrowing the list. A buyer choosing an 18-inch tire has more variety in both look and application, while the 19-inch fitment is more tightly focused on blackwall performance-oriented road tires.
Restoration & Appearance
Which tire should I choose for a period-style 2009 Audi A5 Quattro?
A period-style approach on a 2009 Audi A5 Quattro usually starts by preserving the correct wheel diameter and the corresponding radial tire size already suited to the car, either 245/40R18 or 255/35R19. From there, the decision becomes one of overall presentation, with blackwall remaining the most understated look and 245/40R18 offering more expressive styling options.
Because this is a modern-era Audi coupe rather than an earlier restoration car, appearance choices are often more about preserving the car’s design balance than chasing a vintage look. Keeping the proper low-profile proportions matters more than adding visual flair that conflicts with the car’s character. Wheel fitment and stance should be confirmed before changing styles.
How does tire construction affect the appearance of a restored 2009 Audi A5 Quattro?
On a 2009 Audi A5 Quattro, tire construction does not create a bias-ply versus radial appearance decision because the primary fitments are radial. The visible differences come more from sidewall treatment, tread presentation, and maintaining the correct low-profile size for either the 18-inch or 19-inch wheel setup.
That means appearance is tied closely to proportion. A tire that is the wrong size or intended for a very different use can change the visual balance of the coupe even if it mounts correctly. Owners aiming for a clean, restoration-oriented look should keep the proper size relationship in place and choose sidewall styling with restraint.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2009 Audi A5 Quattro?
Yes, modifications can affect tire fitment on a 2009 Audi A5 Quattro even when the tire size looks close to the original setup. 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 in the wheelwell.
That is why tire selection should be based on the car as it exists today, not only on its original model designation. A wheel that shares the same diameter may still create clearance issues if width or offset has changed. Steering lock, inner suspension clearance, and fender room are worth checking before settling on a replacement tire.
What should I inspect before driving a 2009 Audi A5 Quattro on new tires?
Before driving a 2009 Audi A5 Quattro on new tires, inspect wheel condition, confirm the correct tire size for the wheel diameter, and make sure inflation is set properly for the tire being used. It also helps to check for suspension wear, alignment issues, and any rubbing points that could affect a low-profile tire.
A careful once-over matters because this car uses relatively short sidewalls that can make setup issues more noticeable. Uneven wear, vibration, or contact marks around the wheelwell should be addressed early. After installation, recheck pressure and look for any signs of interference during turning or over bumps before putting the car into regular service.
How often should tires on a 2009 Audi A5 Quattro be inspected?
Tires on a 2009 Audi A5 Quattro should be inspected regularly, especially because low-profile fitments can show wear patterns and impact damage more clearly than taller tires. Pressure, tread wear, cuts, bulges, and sidewall damage should all be checked as part of normal ownership, not only when a tire looks visibly low.
Routine inspection is even more important if the car is driven seasonally, stored for stretches, or fitted with performance-oriented tires. Air loss, flat spotting, or age-related cracking can develop on cars that are not used every day. A quick visual check before longer drives and a closer inspection at regular service intervals can prevent avoidable problems.
