The 2011 Audi S4 sits in the supercharged sport-sedan era that helped define modern Audi performance, blending everyday usability with the sharper reflexes enthusiasts expect from the S badge. Its tire fitment reflects that dual purpose, with radial sizes in 245/40R18 and 255/35R19 depending on configuration. That means the main decision is not whether the car belongs on vintage-style bias-ply rubber, but which modern radial size matches the wheel setup on the car. Available choices also vary by brand, series, and sidewall treatment, including blackwall, redline, and raised white letter options in 18-inch fitment. Checking the exact sub-model and wheel diameter comes first.
Which Tire Size Is Right for The 2011 Audi S4
The 2011 Audi S4 uses two primary tire sizes, and the first thing to confirm is wheel diameter. 245/40R18 fits 18-inch wheels, while 255/35R19 fits 19-inch wheels, and sub-model fitment is not the same across the range. Once the wheel and sub-model are confirmed, the decision shifts to comparing radial tire series, sidewall style, and the intended balance of appearance and road use.
In 245/40R18, the 245 identifies section width in millimeters, 40 is the aspect ratio, R denotes radial construction, and 18 is the rim diameter in inches. This is a modern radial fitment for the 2011 Audi S4 and applies to Premium Plus configurations equipped with 18-inch wheels. Product choices in this size include M&H Racemaster, BFGoodrich, Nitto, and Pro-Trac, with blackwall, redline, and RWL sidewall treatments across several tire series. It is the right size to evaluate when the car retains its 18-inch wheel setup and the goal is to choose among street, appearance, or specialty-oriented radial options.
In 255/35R19, the 255 is the section width in millimeters, 35 is the aspect ratio, R marks radial construction, and 19 indicates a 19-inch rim. This is the larger wheel fitment used on the 2011 Audi S4, including Prestige models and some Premium Plus configurations with 19-inch wheels. Available choices in this size center on BFGoodrich blackwall tires across the g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A series. It is the size to confirm when the car has 19-inch wheels and the buyer is comparing modern performance-oriented radial offerings rather than appearance-focused sidewall variations.
Sub-model fitment matters on the 2011 Audi S4 because tire size depends on the exact configuration. Premium Plus can use either 18-inch or 19-inch fitment, while Prestige uses the 19-inch size, so identifying the sub-model and wheel setup should come before choosing a tire.
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2011 Audi S4 Premium Plus
The 2011 Audi S4 Premium Plus can use either of the vehicle's two radial tire sizes, depending on whether the car is equipped with 18-inch or 19-inch wheels. That makes wheel confirmation especially important before selection, since the available product mix, sidewall treatments, and tire series differ between the two fitments.
The 2011 Audi S4 Prestige uses the 255/35R19 radial tire size on a 19-inch wheel. Tire selection here is more straightforward, with the main comparison points being tire series, load-related specifications where relevant, and the kind of modern road-use character desired from a 19-inch performance radial.
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 S4 Tires for Sale
Available 2011 Audi S4 tires are modern radial options in 18-inch and 19-inch fitments from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac. Depending on size, buyers can compare blackwall, redline, and RWL sidewalls along with several performance-oriented tire series.
Common 2011 Audi S4 tire questions usually come down to wheel diameter, sub-model fitment, available radial choices, and how to choose among different brands, series, and sidewall styles. Maintenance, modifications, and pre-drive checks also matter on a performance sedan with more than one factory tire size.
Tire Size & Fitment
What tire size fits a 2011 Audi S4?
The 2011 Audi S4 uses two primary tire sizes: 245/40R18 and 255/35R19. Both are radial sizes, but they do not apply the same way across the lineup. Premium Plus can be found with either size depending on wheel setup, while Prestige uses 255/35R19.
The practical step is to confirm the actual wheel diameter on the car before choosing a tire. An 18-inch wheel requires the 245/40R18 fitment, and a 19-inch wheel requires 255/35R19. That check matters even more on cars that may have had wheel changes, optional wheel packages, or aftermarket upgrades over time.
What size rim does a 2011 Audi S4 use?
A 2011 Audi S4 uses either an 18-inch or 19-inch rim, depending on its tire fitment. The 245/40R18 tire is paired with an 18-inch rim, and the 255/35R19 tire is paired with a 19-inch rim. Both sizes are modern radial fitments for this model.
Rim diameter should be confirmed before anything else because tire size selection begins there. A buyer should also verify actual wheel width and overall wheel setup when comparing products, especially if the car no longer wears its original-style wheels. Matching the tire to the correct diameter is essential before considering brand, series, or sidewall style.
Do all 2011 Audi S4 sub-models use the same tire size?
No, all 2011 Audi S4 sub-models do not use the same tire size. Premium Plus can use either 245/40R18 or 255/35R19, while Prestige uses 255/35R19. The model range stays within radial construction, but the wheel and tire combination still varies by configuration.
That difference means the exact sub-model alone is helpful, but the wheel diameter on the car is still the deciding detail. Premium Plus owners should not assume one size without checking the wheel first. Once that is settled, the buying decision becomes much easier because the available product mix is tied directly to the confirmed tire size.
Choosing the Right Tire
What should I consider when choosing a 2011 Audi S4 tire?
Start with the correct size for the car's wheel setup: 245/40R18 for 18-inch wheels or 255/35R19 for 19-inch wheels. From there, compare radial construction details that matter to your use, including tire series, sidewall style, rim-width compatibility, weight, and load figures when those specifications are relevant to the product.
The 18-inch fitment offers the broadest variety, including BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, while the 19-inch fitment centers on BFGoodrich performance choices. A street-driven S4, a visually customized car, and a specialty-use setup may point toward different options even within the same size, so the best comparison starts after size and wheel are confirmed.
What sidewall styles are available for 2011 Audi S4 tires?
Sidewall style depends on size. In 245/40R18, available sidewall treatments include blackwall, redline, and RWL. In 255/35R19, the available products are blackwall tires. All of these choices remain within modern radial construction rather than vintage bias-ply styling.
That means appearance options are broader in the 18-inch fitment than in the 19-inch fitment. Buyers focused on a more custom or distinctive presentation may spend more time comparing the 245/40R18 offerings, while 255/35R19 selection is more centered on series and specification differences. Sidewall choice should still come after confirming the wheel diameter and exact fitment.
What brands offer tires for the 2011 Audi S4?
Tires for the 2011 Audi S4 are available from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, depending on size. The 245/40R18 fitment has the widest brand spread, while 255/35R19 choices are concentrated in the BFGoodrich lineup. Each option is a radial tire intended for modern wheel fitment.
Brand comparison should be done within the correct size first, because the available series and sidewall treatments differ by fitment. The 18-inch size includes more variety in both appearance and product character, while the 19-inch size is more tightly focused. Once size is settled, compare the individual tire series, wheel-width suitability, and the type of driving the car actually sees.
Restoration & Appearance
Which tire should I choose for a period-style 2011 Audi S4?
A period-style 2011 Audi S4 still starts with the correct modern radial size for the wheel on the car, either 245/40R18 or 255/35R19. Since this S4 belongs to a modern performance era rather than a bias-ply era, the appearance decision is more about preserving an early-2010s sport-sedan look than recreating a vintage tire presentation.
Among the available choices, 245/40R18 gives the most visual variety because it includes blackwall, redline, and RWL sidewall treatments. Buyers aiming for a more original-looking presentation will usually stay closer to a conventional blackwall performance radial, while customized cars may lean toward the more distinctive sidewall options after size and wheel fitment are confirmed.
How does tire construction affect the appearance of a restored 2011 Audi S4?
On a 2011 Audi S4, tire construction does not create a bias-ply-versus-radial decision because the primary fitments are radial. The visual character comes more from the tire's sidewall treatment, tread presentation, and overall size match to the wheel than from switching between old and new construction types.
For a restoration-oriented or carefully preserved car, the main goal is usually keeping the tire proportion and sidewall style in harmony with the wheel package that belongs on the car. That is why correct size remains the starting point. Once fitment is correct, blackwall tends to preserve a cleaner modern look, while redline or RWL moves the appearance toward customization.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2011 Audi S4?
Yes, modifications can affect tire fitment on a 2011 Audi S4. Wheel changes, altered wheel width, offset differences, suspension lowering, and body or fender modifications can all change how a 245/40R18 or 255/35R19 tire sits on the car. That matters even when the tire size itself is one of the standard S4 fitments.
A modified S4 should be checked for steering clearance, suspension clearance, and fender room before final tire selection. The wheel diameter must still match the tire size, and wheel width should be suitable for the specific product being considered. Any time the car departs from stock-style wheel and suspension geometry, fitment should be verified carefully before road use.
What should I inspect before driving a 2011 Audi S4 on new tires?
Before driving a 2011 Audi S4 on new tires, inspect tire pressure, bead seating, valve condition, wheel hardware, and visible clearance at the suspension and fenders. It is also wise to confirm that the tire size matches the wheel diameter and that all four tires are appropriate for the setup being used on the car.
A short initial drive should be followed by another look for rubbing, uneven contact, or signs of interference during steering and suspension movement. On a performance sedan like the S4, small fitment issues can show up quickly. Keeping inflation correct and rechecking the tires after the first miles helps catch problems before they turn into premature wear or handling complaints.
What should I check before a longer drive in a 2011 Audi S4?
Before a longer drive in a 2011 Audi S4, check inflation pressure, tread condition, sidewall condition, and any signs of puncture, bulging, or air loss. Make sure the car is wearing the correct tire size for its wheel diameter and that no rubbing or unusual wear pattern is already developing.
Longer trips place more importance on consistency across the full set of tires, so look for uneven wear, vibration, and any changes in ride behavior before heading out. On cars with aftermarket wheels or suspension changes, a final clearance check is worthwhile. Regular inspection matters just as much as tire choice, especially on a performance-oriented car driven at highway speeds.
