The 2015 Audi A4 Quattro sits in the later years of the B8-generation A4, a compact luxury sport sedan known for all-weather confidence, precise road manners, and a balanced mix of comfort and sharpness. Tire choice matters on this car because wheel and tire package differences play directly into its stance, response, and everyday drivability. This exact model uses radial fitments in 245/45R17, 245/40R18, or 255/35R19 depending on sub-model and wheel option. Available choices range from blackwall performance radials to Pro-Trac redline and raised white letter styles in the 17-inch and 18-inch sizes. The right selection starts with confirming the exact trim and wheel diameter on the car today.
Which Tire Size Is Right for The 2015 Audi A4 Quattro
Three tire sizes apply to the 2015 Audi A4 Quattro, and the right one depends on the exact sub-model and wheel package. These are all radial fitments, but they use different rim diameters: 17, 18, or 19 inches. Before comparing brands, sidewall styles, or tire series, the first step is confirming both the sub-model and the actual wheel diameter currently on the car.
245/45R17 is a metric radial size: 245 is the section width in millimeters, 45 is the aspect ratio, R identifies radial construction, and 17 is the wheel diameter in inches. On the 2015 Audi A4 Quattro, this size serves the 17-inch wheel fitment and keeps the decision focused on tire character rather than construction type. Available choices include blackwall options from M&H Racemaster, BFGoodrich, and Nitto, along with Pro-Trac Street Pro III in raised white letter and redline form. It is the size to evaluate when the car retains its 17-inch setup and the goal is to match wheel diameter before narrowing appearance or use.
Fit(s): Premium (18 Inch Option), Premium Plus, and Prestige
Construction: Radial|Rim: 18 in
245/40R18 follows the same metric radial format, with a 245-millimeter section width, a 40-series profile, radial construction, and an 18-inch rim diameter. This is a key fitment for several 2015 Audi A4 Quattro configurations, especially where the car carries the standard 18-inch package. Product choice is broad here, including blackwall performance radials from M&H Racemaster, BFGoodrich, and Nitto, plus Pro-Trac Street Pro III options with redline or raised white letter sidewalls. This size deserves close attention when selecting for an 18-inch-equipped car because wheel diameter and visual style both shape the final result.
Fit(s): Premium Plus (19 Inch Option) and Prestige (19 Inch Option)
Construction: Radial|Rim: 19 in
255/35R19 is a wider, lower-profile metric radial size, with 255 representing section width in millimeters, 35 indicating the aspect ratio, and 19 calling for a 19-inch wheel. On the 2015 Audi A4 Quattro, this size belongs to the 19-inch option packages rather than the full range of sub-models. Available choices center on BFGoodrich blackwall performance radials across the g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A lines. This is the fitment to review when the car already has the 19-inch wheel package and the priority is choosing among performance-oriented radial options within that diameter.
Sub-model fitment is not the same across the 2015 Audi A4 Quattro lineup, because wheel-package changes bring different tire sizes with them. Identifying the exact trim and whether the car has the 18-inch or 19-inch option is the key first step before comparing tire choices.
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2015 Audi A4 Quattro Premium
The 2015 Audi A4 Quattro Premium uses the 17-inch radial fitment rather than the larger wheel packages found elsewhere in the range. Tire selection here is mostly about choosing the right product style and intended use once the existing wheel setup has been confirmed.
The 2015 Audi A4 Quattro Premium with the 18 Inch Option moves to the 18-inch radial fitment used on several upper configurations as well. That makes wheel diameter confirmation especially important if the car has been changed over time or fitted with a different wheel package.
The 2015 Audi A4 Quattro Premium Plus uses the 18-inch radial setup as its primary tire fitment. Once that wheel size is confirmed, the choice becomes one of tire series, sidewall presentation, and the kind of road use the car is expected to see.
2015 Audi A4 Quattro Premium Plus (19 Inch Option)
The 2015 Audi A4 Quattro Premium Plus with the 19 Inch Option uses the low-profile 19-inch radial fitment. Selection is more focused here, so the main task is verifying the car still wears the correct 19-inch wheels before choosing among the available blackwall performance radials.
The 2015 Audi A4 Quattro Prestige uses the 18-inch radial fitment in standard form. For this sub-model, tire choice centers on comparing the available 18-inch products while making sure the car has not been changed to a different wheel diameter.
The 2015 Audi A4 Quattro Prestige with the 19 Inch Option uses the 19-inch radial package rather than the standard 18-inch setup. That makes current wheel verification important, especially on a used car where option-package wheels may have been replaced at some point.
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 A4 Quattro Tires for Sale
Available 2015 Audi A4 Quattro tire choices vary by wheel package, with BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac offerings across several radial series. Depending on size, buyers can compare blackwall, redline, and raised white letter styles along with different rim-width specifications and intended-use character.
Common 2015 Audi A4 Quattro tire questions usually center on identifying the correct size by trim and wheel package, then comparing radial options by sidewall style, brand, appearance, and practical fitment considerations before road use.
Tire Size & Fitment
What tire size fits a 2015 Audi A4 Quattro?
The 2015 Audi A4 Quattro uses three tire sizes depending on sub-model and wheel package: 245/45R17, 245/40R18, and 255/35R19. All three are radial fitments, and each size corresponds to a specific wheel diameter rather than serving as a universal choice across the entire model range.
The practical step is to confirm the exact trim and the wheels currently on the car before choosing a tire. A Premium model may use 17-inch tires, while other versions move to 18-inch or 19-inch packages, and a used car may no longer have its original wheels.
What size rim does a 2015 Audi A4 Quattro use?
A 2015 Audi A4 Quattro can use 17-inch, 18-inch, or 19-inch rims depending on the sub-model and wheel option. The tire sizes match those diameters directly: 245/45R17 for 17-inch wheels, 245/40R18 for 18-inch wheels, and 255/35R19 for 19-inch wheels.
Rim diameter should be checked before anything else because the correct tire size starts there. Looking at the current wheel package is especially important on an A4 Quattro that may have seen aftermarket wheels, seasonal wheel swaps, or a trim-level wheel change during its life.
Why does the 2015 Audi A4 Quattro have more than one tire size?
The 2015 Audi A4 Quattro has more than one tire size because different trims and option packages use different wheel diameters. The lineup includes a 17-inch fitment, an 18-inch fitment, and a 19-inch option fitment, all within the same model family.
That means tire selection is tied to the exact configuration rather than the model name alone. Checking the sub-model helps narrow the likely size, but the final confirmation should still come from the actual wheels on the car, especially if it has been modified or purchased used.
Choosing the Right Tire
What should I consider when choosing a 245/40R18 tire for a 2015 Audi A4 Quattro?
Start with the correct size and wheel diameter, then compare the available 245/40R18 radial choices by tire series, sidewall style, and intended use. This size is offered in blackwall performance-oriented lines from BFGoodrich, Nitto, and M&H Racemaster, and also in Pro-Trac Street Pro III with redline or raised white letter styling.
Rim-width compatibility is worth checking because several 245/40R18 options specify fitment across an 8.0- to 9.5-inch range, while others are built around a narrower intended wheel width. Matching the tire to the current wheel and the look you want on the car will usually narrow the field quickly.
What sidewall styles are available for 2015 Audi A4 Quattro tires?
Sidewall choices for the 2015 Audi A4 Quattro include blackwall, redline, and RWL, or raised white letter, depending on tire size. The 17-inch and 18-inch fitments offer the most visual variety, while the 19-inch options are centered on blackwall performance radials.
That gives the car owner a clear appearance choice as well as a fitment choice. Blackwall keeps a more modern, understated look, while redline and raised white letter sidewalls create a more customized presentation, so the best option depends on whether the car is being kept subtle or given a more distinctive style.
What brands offer tires for the 2015 Audi A4 Quattro?
Tires for the 2015 Audi A4 Quattro are available from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac. Brand coverage varies by size, with the 17-inch and 18-inch fitments offering the broadest mix, while the 19-inch size is concentrated around BFGoodrich radial performance lines.
Brand should be compared alongside the tire series, sidewall treatment, and wheel specifications rather than treated as the only decision point. On this Audi, the most useful approach is to confirm the correct size first, then compare each brand's offering within that size and the way the car will actually be used.
Restoration & Appearance
Which tire should I choose for a period-style 2015 Audi A4 Quattro?
A period-style 2015 Audi A4 Quattro usually starts with staying in the tire size that matches the car's original wheel package, then choosing a sidewall treatment that suits the look you want. Blackwall is the most restrained option across all three sizes, while redline and raised white letter choices appear in the 17-inch and 18-inch fitments.
Keeping the proper wheel diameter matters more than chasing a dramatic style change, because the A4's visual balance depends heavily on the wheel-and-tire package. If appearance is the main goal, compare the available sidewall styles within the correct size rather than moving to a different diameter without checking overall fitment.
Does correct tire fitment matter for a 2015 Audi A4 Quattro restoration?
Correct tire fitment matters on a 2015 Audi A4 Quattro because wheel diameter and tire profile are part of the car's intended stance and road manners. Using the proper 17-inch, 18-inch, or 19-inch fitment for the exact trim or wheel option keeps the overall presentation closer to how the car was equipped.
Restoration-minded buyers should confirm the current wheels before ordering, since many newer collector cars have already seen wheel swaps. If originality is especially important, the safest path is to verify the car's trim and wheel package first, then choose a tire size and sidewall style that supports that configuration.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2015 Audi A4 Quattro?
Yes, modifications can affect tire fitment on a 2015 Audi A4 Quattro even when the tire size looks close on paper. Aftermarket wheels, altered offsets, suspension changes, lowering, and body modifications can all change the clearance available around a 245/45R17, 245/40R18, or 255/35R19 tire.
That is why the car's current setup matters as much as its original trim designation. Checking wheel diameter, wheel width, and visible clearance at the fender and steering range helps avoid choosing a tire that matches the badge but not the way the car actually sits today.
What should I inspect before driving a 2015 Audi A4 Quattro on new tires?
Before driving a 2015 Audi A4 Quattro on new tires, inspect the wheels for correct diameter and condition, verify that the tires are properly seated and inflated, and check for any rubbing at full steering lock or over suspension movement. Lug hardware and overall wheel condition deserve attention as well.
A short, careful first drive can reveal vibration, pull, or clearance issues before the car is used normally. It also makes sense to look over suspension and steering components at the same time, because worn parts can affect how a fresh set of tires behaves on the road.
How often should tires on a 2015 Audi A4 Quattro be inspected?
Tires on a 2015 Audi A4 Quattro should be inspected regularly rather than only when tread looks low. Pressure, uneven wear, cuts, bulges, and sidewall damage are all worth checking, especially on a car that may alternate between daily driving, seasonal use, or long periods of sitting.
A quick visual check before longer drives is a sensible habit, and stored vehicles should not be ignored just because mileage stays low. Age, air loss, and flat spotting can matter as much as tread depth, particularly when larger wheel packages and lower-profile tires are involved.
