The 2013 Audi A8 Quattro sits at the top of Audi’s full-size luxury lineup, blending understated design, advanced all-wheel-drive capability, and the kind of long-distance composure buyers expect from a flagship sedan. Whether kept as a refined daily driver or maintained as a modern German luxury car with collector appeal, tire fitment matters to both appearance and ride quality. This model uses radial tires in two primary sizes, 255/45R19 and 265/40R20, depending on the wheel setup. That makes the key decision less about vintage-style construction and more about confirming the correct rim diameter, then choosing the right size for the car’s exact wheel package and intended road use.
Which Tire Size Is Right for The 2013 Audi A8 Quattro
The 2013 Audi A8 Quattro uses two primary tire sizes, and the first step is confirming whether the car is on 19-inch or 20-inch wheels. Both sizes are radial fitments and both appear across the covered sub-models, so the real fitment decision starts with wheel diameter rather than trim level. Once that is confirmed, the focus shifts to selecting the right tire within that size for ride quality, appearance, and everyday use.
255/45R19 is a metric radial size in which 255 represents the nominal section width in millimeters, 45 is the aspect ratio, R identifies radial construction, and 19 is the wheel diameter in inches. On the 2013 Audi A8 Quattro, this size suits a 19-inch wheel setup and aligns with the modern fitment approach expected on a luxury sedan of this era. The practical takeaway is simple: this size belongs on cars actually equipped with 19-inch rims, and it should be matched to the existing wheel package before any replacement decision is made.
265/40R20 is also a metric radial size, with a 265-millimeter nominal section width, a 40-series profile, radial construction, and a 20-inch rim diameter. For the 2013 Audi A8 Quattro, this size is tied to the larger 20-inch wheel configuration rather than the 19-inch setup. Its role in the fitment picture is to serve owners whose cars already carry 20-inch wheels, so the important step is verifying the actual wheels on the vehicle and checking overall clearance and compatibility if the car has been modified from stock.
Fitment across the covered 2013 Audi A8 Quattro sub-models is straightforward because each one can use the same two radial tire sizes. The important detail is not the trim name alone, but confirming whether the car is equipped with 19-inch or 20-inch wheels before choosing a replacement tire.
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2013 Audi A8 Quattro Base
The 2013 Audi A8 Quattro Base uses the same two radial fitment paths found across the lineup, with tire choice depending on whether the car has 19-inch or 20-inch wheels. That makes wheel confirmation the key first step, followed by selecting the proper size for the existing setup and intended driving use.
The 2013 Audi A8 Quattro L shares the same tire-fitment pattern, so replacement depends on the wheel package rather than a unique sub-model-only size. Once the rim diameter is confirmed, tire selection becomes a matter of matching the correct radial size to the car’s current wheels and overall setup.
The 2013 Audi A8 Quattro L W12 follows the same basic tire-size pattern as the other covered sub-models, with both primary radial sizes in use depending on wheel diameter. For this sub-model, the safest approach is to verify the wheels on the car first, then choose the corresponding size rather than assuming fitment by model name alone.
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.
Frequently Asked Questions
These FAQs for the 2013 Audi A8 Quattro focus on the two primary tire sizes, wheel-diameter fitment, how to choose between available wheel setups, and what to inspect before putting a modern luxury sedan back into regular road use.
Tire Size & Fitment
What tire size fits a 2013 Audi A8 Quattro?
The 2013 Audi A8 Quattro uses two primary tire sizes: 255/45R19 and 265/40R20. Both are radial sizes, and both appear across the covered A8 Quattro sub-models, including Base, L, and L W12.
The important distinction is wheel diameter. A car on 19-inch wheels takes 255/45R19, while a car on 20-inch wheels takes 265/40R20. Before replacing tires, check the actual wheel size on the vehicle rather than relying only on the trim badge, especially if the car has seen wheel changes during its life.
What size rim does a 2013 Audi A8 Quattro use?
A 2013 Audi A8 Quattro uses either a 19-inch or 20-inch rim, depending on the wheel setup on the car. The 255/45R19 tire is matched to a 19-inch rim, while the 265/40R20 tire is matched to a 20-inch rim.
That means rim diameter must be confirmed before selecting a tire. A trim name alone does not narrow it down because the covered sub-models can use either size. Looking at the existing tire sidewall, measuring the wheel, or confirming the current wheel package is the right starting point before any replacement purchase.
Do all 2013 Audi A8 Quattro sub-models use the same tire size?
The covered 2013 Audi A8 Quattro sub-models share the same fitment pattern rather than one single universal size. Base, L, and L W12 can all use either 255/45R19 or 265/40R20, depending on which wheel diameter is on the car.
That makes sub-model identification less important than wheel verification. An A8 Quattro L does not automatically require a different tire than a Base or L W12 if they share the same wheel diameter. The practical step is to confirm whether the vehicle has 19-inch or 20-inch wheels, then match the tire size accordingly.
Choosing the Right Tire
What should I consider when choosing a tire for a 2013 Audi A8 Quattro?
Start with the correct size for the wheels already on the car: 255/45R19 for 19-inch rims or 265/40R20 for 20-inch rims. Both are radial fitments, so the main selection issue is matching the tire to the existing wheel package rather than choosing between vintage constructions.
After size is confirmed, think about how the car is used. A regularly driven A8 Quattro may prioritize ride quality and road manners, while a lower-mileage example may place more emphasis on maintaining the intended overall look and dimensional balance. Any wheel, suspension, or ride-height changes should be checked before final tire selection.
How do I choose between the available tires for a 2013 Audi A8 Quattro?
Choosing the right tire begins with selecting the correct primary size for the car’s wheel diameter. Since the 2013 Audi A8 Quattro uses modern radial sizes, the most important baseline is proper fitment to either the 19-inch or 20-inch wheel setup already on the vehicle.
From there, compare tires by how closely they suit the car’s role as a full-size luxury sedan. Ride comfort, handling feel, and compatibility with the car’s current wheels matter more than simply matching the model name. Any replacement should also be evaluated against clearance, especially if aftermarket wheels or suspension changes are part of the car’s setup.
Should I choose 255/45R19 or 265/40R20 for a 2013 Audi A8 Quattro?
The correct choice depends on the wheels on the car, not personal preference alone. A 2013 Audi A8 Quattro with 19-inch wheels uses 255/45R19, while one with 20-inch wheels uses 265/40R20.
These are not interchangeable choices unless the wheel package is changed to match. Moving from one size to the other means changing rim diameter, and that can affect clearance and overall fitment. Before considering any switch, confirm the current wheel setup and inspect the vehicle for modifications that could influence tire-to-body or tire-to-suspension space.
Restoration & Appearance
Does correct tire fitment matter for a 2013 Audi A8 Quattro restoration or preservation project?
Yes. Even on a modern luxury sedan like the 2013 Audi A8 Quattro, correct tire fitment helps preserve the vehicle’s intended stance, wheel-to-tire relationship, and road manners. The right starting point is staying with the proper primary size for the existing 19-inch or 20-inch wheel setup.
Preservation-minded owners should avoid assuming that any close-looking metric size will deliver the same result. A different size can change the visual balance of the car and create fitment complications. For an A8 kept in especially original condition, it also helps to confirm the wheel package already on the car before replacing tires.
How does tire size affect the appearance of a 2013 Audi A8 Quattro?
Tire size plays a major role in how a 2013 Audi A8 Quattro sits visually, especially because this car uses low-profile modern radial sizes tied directly to 19-inch and 20-inch wheels. The tire sidewall height and wheel diameter work together to create the sedan’s intended luxury-performance presentation.
A replacement tire should match the correct size for the wheel package already on the vehicle. Using a different size than the intended fitment can alter the visual proportion between tire and wheel, even before any clearance concerns appear. That is worth checking carefully on a car being preserved for a clean, original-style look.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2013 Audi A8 Quattro?
Yes. Wheel changes, altered offsets, suspension modifications, or ride-height adjustments can all affect tire fitment on a 2013 Audi A8 Quattro. Even when the car uses one of its primary sizes, modifications can change how much space is available around the tire.
A car with aftermarket wheels or lowered suspension should be checked for steering clearance, inner-fender space, and suspension clearance before replacement tires are selected. The same tire size that works on an unmodified A8 Quattro may need closer evaluation on a changed setup, especially when moving between the 19-inch and 20-inch wheel packages.
What should I inspect before driving a 2013 Audi A8 Quattro on new tires?
Before road use, inspect the wheels for damage, confirm the tire size matches the wheel diameter, and make sure the tires are properly mounted and inflated. It is also smart to look over the suspension and alignment condition, since a large luxury sedan depends on stable geometry for proper tire behavior.
A walkaround check should include visible clearance at the fenders and inside the wheel wells, especially at full steering lock. On a car that has been sitting, inspect for air loss, uneven wear from the previous tires, and any signs that the wheel or suspension setup has changed from stock. Those checks help avoid fitment surprises once the car is back on the road.
How often should tires on a 2013 Audi A8 Quattro be inspected?
Tires on a 2013 Audi A8 Quattro should be inspected regularly, not just when tread looks low. A modern luxury sedan can hide developing issues until they affect ride quality or handling, so routine checks for pressure, uneven wear, cuts, cracking, and bulges are worthwhile.
Cars driven occasionally deserve the same attention as daily drivers. A8 Quattro models that spend more time parked can still develop age-related condition problems or gradual air loss. Checking the tires before longer drives, after extended storage, and anytime the car shows a change in ride feel helps catch problems before they become roadside issues.
