The 2015 Audi S7 sits in the modern grand touring performance category, blending fastback luxury, all-weather capability, and serious power in a way that rewards both long-distance driving and sharp road manners. Its tire fitment reflects that balance, with two primary radial sizes used on this model: 255/40R19 and 265/35R20. That means the key decision is not vintage-style bias-ply versus radial, but confirming which wheel diameter is on the car and then choosing among the right performance-oriented tire options. Available choices include blackwall, redline, and raised white letter presentations, so appearance can still play a role alongside handling, wheel fitment, and intended use.
Which Tire Size Is Right for The 2015 Audi S7
The 2015 Audi S7 uses two primary tire sizes, and the difference comes down first to wheel diameter: 19-inch wheels use 255/40R19, while 20-inch wheels use 265/35R20. Since the S7 Base can be found with either size, the first step is confirming which wheels are actually on the car before comparing brands, sidewall styles, and tire series.
255/40R19 is a modern metric radial size in which 255 identifies the nominal section width in millimeters, 40 is the aspect ratio, R indicates radial construction, and 19 is the wheel diameter in inches. On the 2015 Audi S7, this size suits cars running 19-inch wheels and keeps the fitment firmly in a modern performance-tire category. Available options include BFGoodrich and Pro-Trac products, with blackwall, redline, and raised white letter presentations depending on the tire series. It is the right size to evaluate when the car already has 19-inch wheels and you want to compare performance-oriented choices without changing rim diameter.
265/35R20 is a modern metric radial size where 265 is the nominal section width in millimeters, 35 is the aspect ratio, R marks radial construction, and 20 identifies the wheel diameter in inches. For the 2015 Audi S7, this size applies to cars equipped with 20-inch wheels and represents a lower-profile fitment than the 19-inch option. Choices in this size include Nitto, BFGoodrich, and Pro-Trac offerings with blackwall, redline, and raised white letter styling. This is the size to focus on when the car is already set up on 20-inch wheels and you want to compare tire character, appearance, and wheel compatibility within that fitment.
Sub-model fitment is straightforward here because the 2015 Audi S7 Base is the covered configuration, but tire choice still varies by wheel size. Checking whether the car carries 19-inch or 20-inch wheels is the important step before selecting a tire.
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2015 Audi S7 Base
The 2015 Audi S7 Base uses radial tires and can be fitted with either the 255/40R19 or 265/35R20 size, depending on the wheel package on the car. That makes wheel-diameter confirmation the real starting point, followed by comparing available brands, sidewall treatments, and tire series within the correct 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 2015 Audi S7 Tires for Sale
Available 2015 Audi S7 tires center on the 255/40R19 and 265/35R20 radial sizes, with choices from BFGoodrich, Pro-Trac, and Nitto. The product grid lets you compare blackwall, redline, and raised white letter styles along with series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, Street Pro III, and NT555 G2.
2015 Audi S7 tire questions usually come down to confirming 19-inch versus 20-inch wheel fitment, understanding the two tire sizes, and comparing available radial options by brand, sidewall style, and intended use.
Tire Size & Fitment
What tire size fits a 2015 Audi S7?
The 2015 Audi S7 uses two primary tire sizes: 255/40R19 and 265/35R20. Both are radial sizes, and each one corresponds to a different wheel diameter rather than a different tire construction type.
The practical step is to confirm whether the car has 19-inch or 20-inch wheels before choosing a tire. A car that has been fitted with aftermarket wheels should be checked in person, since the correct tire choice depends on the actual wheel diameter and the overall setup currently on the vehicle.
What size rim does a 2015 Audi S7 use?
A 2015 Audi S7 uses either a 19-inch or 20-inch rim, depending on which tire size is on the car. The 255/40R19 size matches a 19-inch rim, while the 265/35R20 size matches a 20-inch rim.
That means rim diameter should be verified before comparing tires, especially if the car is new to you or has been modified. Measuring the wheel or reading the existing tire sidewall is the quickest way to avoid selecting the wrong size, and wheel width should also be checked when comparing specific tire models.
Why does the 2015 Audi S7 have more than one tire size?
The 2015 Audi S7 has more than one tire size because it can be equipped with different wheel diameters. One fitment uses 255/40R19 on a 19-inch rim, and the other uses 265/35R20 on a 20-inch rim.
This is not a case of picking whichever size looks best on the same wheel. The right choice depends on the wheels actually on the car, and that affects which products are worth comparing. Once the wheel diameter is confirmed, the decision shifts to brand, sidewall appearance, and the kind of road use the S7 will see.
Choosing the Right Tire
What should I consider when choosing a 2015 Audi S7 tire?
Start with the correct size for the wheel on the car: 255/40R19 for 19-inch wheels or 265/35R20 for 20-inch wheels. From there, compare tire construction, sidewall style, brand, tire series, and any product details such as rim-width compatibility, weight, or load information when those details are part of the tire listing.
A 2015 Audi S7 buyer is usually balancing performance feel, visual presentation, and wheel fitment rather than choosing between vintage constructions. Blackwall options keep a modern appearance, while redline and raised white letter choices create a more customized look. Matching the tire to the actual wheel setup and intended use matters more than choosing by appearance alone.
What sidewall styles are available for 2015 Audi S7 tires?
2015 Audi S7 tires are available in blackwall, redline, and RWL sidewall styles, depending on the size and tire series. Blackwall choices appear in both 255/40R19 and 265/35R20, while redline and raised white letter options are also available through Pro-Trac Street Pro III products.
That gives the S7 owner some flexibility in presentation without changing the underlying fitment. Blackwall suits a more understated modern look, while redline and raised white letter styling lean more custom. The sidewall treatment should be chosen after the correct tire size and wheel diameter are confirmed, not before.
What brands offer tires for the 2015 Audi S7?
Tires for the 2015 Audi S7 are available from BFGoodrich, Pro-Trac, and Nitto across its two primary sizes. Depending on the wheel size, the available tire series include g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, Street Pro III, and NT555 G2.
The useful comparison is not simply brand name, but how each brand's offering lines up with your wheel diameter, preferred sidewall style, and intended use. Some options focus on a clean blackwall performance look, while others add redline or raised white letter styling. Comparing the exact size first keeps the choice focused and practical.
Restoration & Appearance
Which tire should I choose for a period-style 2015 Audi S7?
A period-style approach for a 2015 Audi S7 still begins with the correct modern radial size for the wheel on the car, either 255/40R19 or 265/35R20. Within those sizes, the most restrained visual direction usually comes from blackwall tires, while other sidewall treatments push the appearance toward a more customized presentation.
Since this is a modern performance luxury car rather than an early collector-era vehicle, appearance choices tend to revolve around preserving the car's original character rather than recreating a vintage tire look. Keeping the correct size and wheel diameter in place usually does more for the car's visual balance than chasing a more dramatic sidewall treatment.
How does tire construction affect the appearance of a restored 2015 Audi S7?
On a 2015 Audi S7, tire construction is straightforward because the primary fitments are radial. That means appearance differences are shaped less by bias-ply versus radial construction and more by sidewall treatment, tread presentation, and the proportions created by the correct 19-inch or 20-inch wheel-and-tire combination.
For a restoration-minded owner, keeping the proper size for the wheel package helps the car retain the intended stance and visual proportion. Blackwall tires usually preserve the most contemporary factory-inspired look, while redline or raised white letter sidewalls create a stronger custom impression. The wheel diameter on the car should guide that decision first.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2015 Audi S7?
Yes, modifications can affect tire fitment on a 2015 Audi S7 even when the tire size itself is one of the correct primary options. Aftermarket wheels, changes in wheel width or offset, suspension lowering, and body or brake changes can all alter the space available around the tire.
That is why an S7 with non-original wheels should be checked for clearance at the fender, inner wheelhouse, and steering range before settling on a tire. The sidewall size alone does not tell the whole story once the car has been altered, so wheel specifications and physical clearance deserve a careful look.
What should I inspect before driving a 2015 Audi S7 on new tires?
Before driving a 2015 Audi S7 on new tires, inspect the wheels for damage, confirm the tire size matches the wheel diameter, and check that inflation is set correctly for the application. It is also wise to look over the valve stems, tread surface, and sidewalls for any shipping or mounting damage.
A short initial road test should include attention to vibration, rubbing, or uneven response that could point to balance, clearance, or alignment issues. Cars that have sat for long periods deserve extra caution, since suspension wear, old wheel hardware, or prior modifications can affect how a fresh set of tires behaves on the road.
How often should tires on a 2015 Audi S7 be inspected?
Tires on a 2015 Audi S7 should be inspected regularly, not just when tread looks worn. Pressure, tread condition, uneven wear, cuts, bulges, and sidewall aging all deserve periodic checks, especially on a performance-oriented car where tire condition has a direct effect on response and road manners.
A practical routine is to look over the tires before longer drives and any time the car has been parked for an extended period. Low-use vehicles can still age out their tires even when mileage stays low, so appearance, air retention, and general condition matter as much as tread depth when deciding whether the car is road-ready.
