Audi S7 Tires

Audi S7 uses four tire sizes across the 2013 to 2018 range: 255/40R19 for 2013 through 2017, 265/35R20 for 2013 through 2018, 255/35R21 for 2016, and 275/30R21 for 2017 through 2018. Those sizes correspond to 19-inch, 20-inch, and 21-inch wheel diameters, so the wheel size must match the tire size exactly.

The practical step is to read the existing tire sidewall or measure the wheel before choosing a replacement. Model year alone is not enough for every Audi S7, because 2016 and 2017 each show multiple fitments and the correct choice depends on the wheel package actually fitted to the car.

A 2016 Audi S7 can use 255/40R19, 265/35R20, or 255/35R21, while a 2017 Audi S7 can use 255/40R19, 265/35R20, or 275/30R21. The reason is a rim-diameter split within those model years, with 19-inch, 20-inch, and 21-inch wheel packages all represented rather than one universal fitment.

That means a buyer should identify the wheel diameter first and then match the corresponding tire size. If the car has already been modified, the installed wheels may not match what another Audi S7 from the same year carried, so a physical check is more reliable than relying on the badge year alone.

Audi S7 uses three rim diameters across this range: 19 inches, 20 inches, and 21 inches. The 19-inch size appears from 2013 through 2017, the 20-inch size runs from 2013 through 2018, and 21-inch fitments appear beginning in 2016, first as 255/35R21 and then as 275/30R21 in later years.

Wheel diameter is the first fitment point to confirm because a 19-inch tire cannot be mounted on a 20- or 21-inch wheel, and the same is true in reverse. Once the rim diameter is confirmed, the remaining choice is much simpler because the correct Audi S7 tire size usually narrows to the one tied to that wheel package.

Start with the exact wheel diameter on the car, because a 2016 Audi S7 may use 19-, 20-, or 21-inch fitments and a 2017 Audi S7 may also use those three wheel diameters. Once the wheel diameter is known, the matching sizes narrow to 255/40R19, 265/35R20, or the applicable 21-inch option for that year.

The most reliable checks are the existing tire sidewall, the wheel marking, and the spare documentation that came with the car. If the Audi S7 has aftermarket wheels, verify both the wheel diameter and the currently installed size before replacing anything, since a modified car may no longer follow its original year-based combination.

Available Audi S7 products include Blackwall, RWL, and Redline sidewall styles. Blackwall appears in both 255/40R19 and 265/35R20 offerings, while RWL and Redline are also available in those same two sizes through Pro-Trac Street Pro III products.

For many Audi S7 owners, Blackwall will be the most visually understated choice and the closest match to the model's modern executive-performance character. RWL and Redline create a more custom appearance, so the decision comes down to whether the goal is an OEM-style presentation or a more personalized look on a modified or show-oriented car.

The available Audi S7 products come from BFGoodrich, Pro-Trac, and Nitto. BFGoodrich appears in both 19-inch and 20-inch sizes, Pro-Trac offers 19-inch and 20-inch sizes with multiple sidewall treatments, and Nitto appears in the 265/35R20 size.

Brand choice matters once the correct size is settled, because each line aims at a slightly different look and performance emphasis. A buyer comparing Audi S7 tires should first lock in the wheel diameter and size, then decide whether the priority is a conservative Blackwall appearance, a custom sidewall treatment, or a specific performance-oriented series.

Audi S7 tires in the available range include g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, Street Pro III, and Nitto NT555 G2. All are radial-series offerings, but they differ by tread family, sidewall presentation, and the sizes in which they are offered rather than by a change from bias-ply to radial construction.

That means the main comparison is not old-versus-new construction technology, but how each series fits the appearance and driving character you want from your Audi S7. After size is confirmed, compare the available series within that size to decide whether you want a straightforward Blackwall performance look or a more distinctive RWL or Redline presentation.

An Audi S7 that spends long periods parked should be stored on a clean, dry surface away from direct sunlight, ozone sources, and major temperature swings. Keeping the tires properly inflated and moving the car occasionally helps reduce flat spotting, which is especially helpful on low-profile radial sizes such as those used on the Audi S7.

If the car will sit for an extended season, many owners use tire cradles or slightly over-inflate within safe limits for storage, then reset pressures before driving. The goal is to preserve the shape of the tire casing and sidewall so the car returns to the road with fewer vibration and ride-quality issues.

Tires on an Audi S7 should be visually inspected at least monthly and checked again before any longer drive. Look for uneven shoulder wear, cuts, sidewall bulges, cracking, punctures, and pressure loss, all of which matter on wide, low-profile performance tires where small issues can quickly affect handling.

A practical routine is to inspect the tires whenever you wash the car or check fluids. Because Audi S7 uses multiple wheel and tire packages across the years, it is also wise to confirm that all four tires match in size and construction if the car has changed hands or has had previous wheel or suspension modifications.

Audi S7 tires should be replaced when they show age cracking, impact damage, belt separation symptoms, chronic air loss, or uneven wear that cannot be corrected. Tread depth alone is not the only measure, because a collector or lightly driven Audi S7 may age its tires out before it wears them out.

The safest habit is to have older tires evaluated regularly and to pay close attention to ride vibration, noise changes, or visible sidewall deterioration. Even a car that is driven sparingly needs fresh, structurally sound tires if it is going to deliver the stability and braking performance expected from an Audi S7.

Audi S7 appears with four size families across its 2013 to 2018 production span: 255/40R19, 265/35R20, 255/35R21, and 275/30R21. The available replacement products are radial tires, and the size tied to a specific car depends on its year and wheel package rather than one single fitment covering every Audi S7.

For an originality-focused Audi S7, the best approach is to verify the wheel package actually supplied on the car and then match the size accordingly. A car preserved with its factory wheels should follow the size associated with that diameter, while a modified car may need to be returned to its original wheel specification before authenticity can be judged accurately.

Correct tire fitment can influence how an Audi S7 is viewed because wheel diameter, sidewall profile, and sidewall style all affect the car's stance and overall presentation. An Audi S7 wearing the proper size for its wheel package generally looks more coherent and avoids the visual mismatch that comes from an incorrect profile or non-matching overall proportions.

For preservation-minded owners, correct fitment supports both appearance and function. If the goal is judged presentation, keep the size consistent with the car's wheel package and era, and be cautious with custom sidewall treatments unless the car is being built as a personalized driver rather than presented as a stock-style Audi S7.

Audi S7 tires are available with Blackwall, RWL, and Redline sidewall styles in the listed 19-inch and 20-inch offerings. Among those choices, Blackwall aligns most closely with the understated, modern performance-luxury look generally associated with the Audi S7, while RWL and Redline move the car toward a more customized presentation.

If the goal is a factory-style appearance, Blackwall is the most natural place to start. RWL and Redline can still be appealing on an Audi S7 built for personal expression, but they are better treated as style decisions than authenticity choices when the objective is to preserve the car's original visual character.

The listed Audi S7 tires are modern radial products, which suits the car's 2013 to 2018 performance-luxury character far better than period-style collector tire concerns would. Public-road safety still depends on using the exact size that matches the wheel diameter, maintaining proper inflation, and ensuring the tires are free of age or impact damage.

A correctly matched set in good condition is the baseline for stable braking, steering response, and all-wheel-drive balance on an Audi S7. Before regular road use, confirm that all four tires are the proper size for the installed wheels and that wear patterns do not point to alignment or suspension problems.

Before driving an Audi S7, check tire pressure, visible condition, tread wear, and the exact size mounted at each corner. Because this model used 19-, 20-, and 21-inch fitments across its run, it is also important to confirm that the tires match the wheels and that no previous owner fitted an incorrect size after a wheel change.

A quick pre-drive routine can prevent most tire-related problems: inspect for cuts, bulges, nails, sidewall scuffing, and abnormal inner-edge wear. On a performance car like the Audi S7, even small inflation or wear issues can affect stability, so a five-minute check before a trip is worthwhile.

An Audi S7 should only be driven at speeds appropriate to the condition, age, and specification of the tires actually fitted to it. Even when the tire size is correct, old or damaged tires can be unsafe at highway speeds, and a mismatched wheel-and-tire combination can compromise handling long before the car reaches its performance potential.

The practical rule is to treat tire condition as the limiting factor, not the car's capability. If an Audi S7 has recently fitted, age-sound tires in the correct size, normal road use is reasonable; if the tires are older, show cracking, or have an uncertain service history, keep speeds conservative until they are professionally evaluated or replaced.