The 2007 Audi S6 sits in the performance-luxury sport sedan category, blending quattro-era Audi confidence with a more serious factory stance and a strong enthusiast following. Buyers looking after one today are usually balancing sharp road manners with the need to keep the car visually and mechanically in step with its original character. Tire fitment centers on two radial sizes, 255/40R18 and 265/35R19, so the first step is confirming which wheel package is on the car. From there, the decision shifts to series and brand selection rather than bias-ply versus radial construction. Wheel diameter, current wheel setup, and intended street use should guide the final choice.
Which Tire Size Is Right for The 2007 Audi S6
The 2007 Audi S6 uses two primary tire sizes, and the difference comes down first to wheel diameter. Both are metric radial fitments, but one is built for an 18-inch rim and the other for a 19-inch rim. Before choosing a tire, confirm which factory-style wheel package or current wheel setup is actually on the car, then compare the available series and brand options within that size.
255/40R18 is a metric radial size in which 255 identifies nominal section width in millimeters, 40 is the aspect ratio, R denotes radial construction, and 18 is the rim diameter in inches. On the 2007 Audi S6, this size supports the car's modern performance-sedan fitment with an 18-inch wheel package. Available choices in this size include BFGoodrich options from the g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A lines, all with blackwall styling. This size is the right place to focus if the car is running 18-inch wheels and you want to compare tire series without changing overall fitment type.
265/35R19 is a metric radial size where 265 is the nominal section width in millimeters, 35 is the aspect ratio, R indicates radial construction, and 19 marks the rim diameter in inches. For the 2007 Audi S6, it serves the 19-inch wheel fitment and keeps the tire choice in a modern low-profile performance format. Product choices include blackwall tires from BFGoodrich and Nitto, with series such as g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. This size deserves attention when the car has 19-inch wheels and the goal is maintaining the proper rim relationship and profile style.
Sub-model fitment is straightforward here because the covered 2007 Audi S6 Base uses the same two tire sizes. The key step is not choosing between trims, but confirming whether the car is on 18-inch or 19-inch wheels before selecting a tire.
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2007 Audi S6 Base
The 2007 Audi S6 Base uses the same two radial fitments found across this application, with one size matched to 18-inch wheels and the other to 19-inch wheels. Tire selection comes down to verifying the wheel diameter on the car and then choosing among the available blackwall performance-oriented product lines in 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 2007 Audi S6 Tires for Sale
Available 2007 Audi S6 tire choices focus on modern radial blackwall performance tires in 255/40R18 and 265/35R19. BFGoodrich appears in both sizes, while 265/35R19 also adds Nitto, giving buyers a useful comparison across g-Force and NT555 series with some variation in rim-width specifications.
Common 2007 Audi S6 tire questions usually center on the correct size for the car's wheel package, how the 18-inch and 19-inch fitments differ, and what to compare when choosing among the available radial performance tires.
Tire Size & Fitment
What tire size fits a 2007 Audi S6?
The 2007 Audi S6 uses two tire sizes: 255/40R18 and 265/35R19. Both are radial metric fitments, and both apply to the S6 Base, with the actual choice determined by whether the car has 18-inch or 19-inch wheels.
The practical step is to confirm the wheel diameter already on the car before buying tires. A door-jamb label, current sidewall marking, or wheel measurement can help, and any aftermarket wheel change should be verified carefully so the new tire matches the rim diameter and preserves proper clearance.
What size rim does a 2007 Audi S6 use?
A 2007 Audi S6 uses either an 18-inch or 19-inch rim, depending on which tire size is on the car. The 255/40R18 fitment pairs with an 18-inch rim, while the 265/35R19 fitment pairs with a 19-inch rim.
Rim diameter is the first fitment point to confirm because a tire must match the wheel's bead-seat diameter exactly. After that, wheel width also matters, especially if the car has non-original wheels, since tire selection should still suit the wheel and maintain safe clearance at the fenders and suspension.
Why does the 2007 Audi S6 have more than one tire size?
The 2007 Audi S6 has more than one tire size because it can be fitted with two different wheel diameters. Both sizes are correct within this application, but 255/40R18 belongs to the 18-inch setup and 265/35R19 belongs to the 19-inch setup.
That means the right tire is tied to the wheel package actually on the car, not simply the model name. Checking only the year, make, and model is not enough when two rim diameters are in play, so the current wheel and tire markings should be verified before comparing brands or tire series.
Choosing the Right Tire
What should I consider when choosing a 255/40R18 or 265/35R19 tire for a 2007 Audi S6?
Start with the correct size for the wheel diameter on the car, since the 2007 Audi S6 uses either 255/40R18 or 265/35R19. From there, compare construction consistency, blackwall styling, brand, tire series, and any visible differences in rim-width suitability, load figures, or weight where they are stated.
The best choice depends on how the car is used and how closely the wheel setup matches its intended fitment. A car driven regularly may lead you toward one performance-oriented series, while a lightly used example may place more emphasis on maintaining the right size, profile, and overall appearance on the correct wheels.
What sidewall styles are available for 2007 Audi S6 tires?
The available 2007 Audi S6 tire choices here use blackwall sidewalls in both 255/40R18 and 265/35R19. That keeps the presentation in line with the modern, low-profile performance look typically associated with this generation of S6 rather than a vintage sidewall treatment.
Since sidewall style is consistent, the real visual differences come from wheel diameter, tread design, and the tire series you choose. Buyers comparing options can focus less on stripe or whitewall appearance and more on selecting the correct size, the right series character, and wheel compatibility for the car's current setup.
What brands offer tires for the 2007 Audi S6?
BFGoodrich and Nitto both appear in the available tire selection for the 2007 Audi S6. BFGoodrich covers both 255/40R18 and 265/35R19, while Nitto is present in the 265/35R19 fitment through the NT555 G2 series.
Brand choice should be considered alongside the correct size and wheel package rather than on its own. It also helps to compare the specific tire series within each size, since the differences that matter most here involve fitment details, series character, and how well the tire matches the car's intended street use.
Restoration & Appearance
Which tire should I choose for a period-style 2007 Audi S6?
A period-style approach for a 2007 Audi S6 starts with keeping the correct modern radial size for the wheel package on the car: 255/40R18 for 18-inch wheels or 265/35R19 for 19-inch wheels. Because this is a late-model performance sedan, the visual character comes more from size, profile, and wheel relationship than from vintage-style sidewall treatments.
Choosing within the available blackwall performance lines helps preserve the car's contemporary factory-era look without forcing it into an earlier visual theme. Owners pursuing strict originality should also compare the car's current wheels and tire markings with marque-specific references so the finished stance and presentation stay consistent with the car's intended specification.
Does correct tire fitment matter for a 2007 Audi S6 restoration?
Correct tire fitment matters on a 2007 Audi S6 because the car's appearance and road stance depend heavily on the right relationship between tire size and wheel diameter. Using 255/40R18 on an 18-inch setup or 265/35R19 on a 19-inch setup keeps the fitment aligned with the car's intended modern radial proportions.
Even on a cosmetic restoration, tire size affects how the car sits in the wheel opening and how finished the overall presentation looks. Before moving away from the established sizes, check wheel width, suspension height, and fender clearance so the car retains a balanced look instead of appearing over-tired, under-tired, or mismatched.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2007 Audi S6?
Yes, modifications can affect tire fitment on a 2007 Audi S6 even when the tire size itself is one of the correct listed options. Aftermarket wheels, altered wheel widths, offset changes, lowering, or suspension work can all change how a 255/40R18 or 265/35R19 tire sits relative to the fenders and suspension.
That is why a modified car should be checked as an actual wheel-and-tire package rather than by size marking alone. Clearance at full steering lock, suspension travel, and the wheel's real dimensions all deserve attention before mounting new tires, especially when the car no longer matches its original wheel setup.
What should I inspect before driving a 2007 Audi S6 on new tires?
Before driving a 2007 Audi S6 on new tires, confirm the tire size matches the wheel diameter, inspect the wheels for damage, and make sure inflation is set appropriately for the tire and vehicle use. It also helps to check for uneven wear patterns that could point to alignment or suspension issues.
A short inspection of valve stems, tread seating, and visible clearance around the struts and fenders can prevent avoidable problems. On a performance sedan like the S6, a road test should also include attention to vibration, pulling, or rubbing, since those signs often reveal wheel-balance, alignment, or fitment issues early.
How often should tires on a 2007 Audi S6 be inspected?
Tires on a 2007 Audi S6 should be inspected regularly, not just when tread looks low. Monthly pressure checks, routine visual inspection for cuts, bulges, cracking, and irregular wear, and a closer look before longer drives are sensible habits for a car that combines performance fitment with low-profile radial tires.
Cars that see limited mileage still need attention because age, storage conditions, and underinflation can affect tires even when the vehicle is driven infrequently. It is also smart to recheck tire condition any time the car develops vibration, steering changes, or noticeable air loss, since those symptoms can point to mounting or wheel issues.
