The 2008 Audi S8 sits at an interesting point in the modern high-performance luxury sedan market, combining understated executive-car presence with the sharper personality expected from Audi’s S models. Buyers drawn to this generation usually care as much about stance and road manners as outright fitment accuracy, because wheel and tire proportions play a big role in how the car looks and drives. The 2008 Audi S8 uses a 265/35R20 radial tire on a 20-inch rim. That keeps the decision focused on tire series, brand, and sidewall presentation rather than sorting through multiple factory sizes. For an S8 that is driven regularly, wheel compatibility, tire condition, and any past modifications deserve a close look before replacement.
Which Tire Size Is Right for The 2008 Audi S8
The 2008 Audi S8 uses one primary tire size: 265/35R20, and it is a radial fitment on a 20-inch rim. The same size applies to the covered Base sub-model, so the main decision is not which size fits, but which version of that size best matches your priorities for appearance, brand preference, and wheel compatibility.
265/35R20 is a modern metric radial size in which 265 is the section width in millimeters, 35 is the aspect ratio, R identifies radial construction, and 20 is the wheel diameter in inches. On the 2008 Audi S8, this is the core fitment, so staying with this size keeps the car aligned with its intended wheel diameter and tire profile. Available choices include Blackwall, Redline, and RWL sidewall treatments from Nitto, BFGoodrich, and Pro-Trac across series such as NT555 G2, g-Force Phenom T/A, and Street Pro III. That gives owners room to balance visual style with product specifications while keeping the correct size foundation in place.
Fitment is straightforward for the covered 2008 Audi S8 sub-model. The Base model uses the same primary tire size, so the focus stays on selecting the right tire within that size rather than sorting through different fitment combinations.
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2008 Audi S8 Base
The 2008 Audi S8 Base uses the same 265/35R20 radial fitment as the core model. That makes tire selection more about choosing among available brands, sidewall styles, and tire series while confirming that the car still has the correct 20-inch wheel setup.
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 2008 Audi S8 Tires for Sale
Available 265/35R20 choices for the 2008 Audi S8 include radial tires from Nitto, BFGoodrich, and Pro-Trac. The product range gives buyers a mix of Blackwall, Redline, and RWL sidewall styles across the NT555 G2, g-Force Phenom T/A, and Street Pro III series.
For the 2008 Audi S8, the most useful tire questions usually center on the 265/35R20 size, 20-inch wheel fitment, product differences, appearance choices, and what to inspect before putting a high-performance luxury sedan back on the road.
Tire Size & Fitment
What tire size fits a 2008 Audi S8?
The 2008 Audi S8 uses a 265/35R20 radial tire. That is the primary fitment for this model, and the covered Base sub-model uses the same size, which keeps the fitment picture simple compared with vehicles that changed sizes by trim or package.
Using the correct size is only the first step. It is still important to confirm that the car has the proper 20-inch wheels in place, especially if it has ever been fitted with aftermarket wheels or suspension changes. Once size is confirmed, the decision shifts to brand, sidewall style, and the product characteristics that best suit how the car is used.
What size rim does a 2008 Audi S8 use?
The 2008 Audi S8 uses a 20-inch rim with its 265/35R20 tire size. The tire code itself confirms that wheel diameter, since the final number in the size identifies the rim diameter in inches for this metric radial format.
Rim diameter should be verified before any tire purchase, even on a car with a straightforward fitment like the S8. A 20-inch wheel is required for this size, but wheel width and the actual wheel installed also matter. Cars that have seen wheel upgrades, replacement factory wheels, or previous owner changes deserve a physical check before mounting new tires.
Does the 2008 Audi S8 Base use the same tire size?
Yes. The 2008 Audi S8 Base uses the same 265/35R20 radial tire size as the core model. There is no alternate primary size within the covered sub-model fitment, so the size question remains consistent across this page.
That consistency makes selection easier, but it does not eliminate the need to inspect the actual car. Wheel substitutions, damaged wheels, or non-standard suspension setups can still affect clearance and mounting suitability. Once the installed wheel setup checks out, attention can move to the available Blackwall, Redline, or RWL choices and the different tire series offered in this size.
Choosing the Right Tire
What should I consider when choosing a 265/35R20 tire for a 2008 Audi S8?
Start with the correct 265/35R20 size and radial construction, since that is the proper fitment foundation for the 2008 Audi S8. From there, compare brand, tire series, sidewall presentation, and any product details that matter to your use, such as rim-width guidance or load information when it is available.
A regularly driven S8 may call for different priorities than a car kept mainly for fair-weather use or visual presentation. Blackwall choices suit a modern performance look, while Redline or RWL options create a more customized appearance. Matching the tire to the actual wheel setup and the way the car is driven usually matters more than focusing on one feature alone.
What sidewall styles are available for 2008 Audi S8 tires?
The available 265/35R20 tires for the 2008 Audi S8 include Blackwall, Redline, and RWL sidewall styles. Blackwall appears across multiple products, while Pro-Trac Street Pro III adds Redline and RWL options for owners who want a different visual treatment in the same size.
Sidewall style mainly shapes the car’s appearance rather than changing the basic fitment size. A Blackwall tire maintains a cleaner modern look, while Redline and raised white letter styling make a stronger visual statement. Before choosing on appearance alone, confirm that the product’s other specifications suit the wheel and the role the car plays, whether it is driven often or shown occasionally.
What brands offer tires for the 2008 Audi S8?
The 2008 Audi S8 has 265/35R20 tire options from Nitto, BFGoodrich, and Pro-Trac. Those brands appear across several product styles, including performance-oriented Blackwall choices and more appearance-driven alternatives with Redline or RWL sidewalls.
Brand selection is best treated as one part of a broader comparison. It helps to look at the tire series, sidewall design, rim-width guidance where stated, and any available load figures instead of choosing by name alone. Since all of these products share the same core size, the better question is which tire best matches the car’s wheels, appearance, and intended use.
Restoration & Appearance
Which tire should I choose for a period-style 2008 Audi S8?
A period-style approach for a 2008 Audi S8 usually starts by keeping the correct 265/35R20 size and 20-inch wheel diameter intact. Within that size, a Blackwall tire generally preserves the cleaner, more contemporary performance-luxury look associated with a late-2000s European sedan.
Owners who want a more individualized presentation can also consider Redline or RWL options in the same size, but those are styling choices rather than originality claims. When authenticity matters closely, factory brochures, marque references, and original vehicle documentation are the right places to verify how a specific car was delivered before making an appearance-based tire decision.
How does tire construction affect the appearance of a restored 2008 Audi S8?
On the 2008 Audi S8, construction is straightforward because the primary fitment is radial. That means the visual character is influenced more by sidewall style, tread presentation, and maintaining the proper 265/35R20 proportions than by choosing between bias-ply and radial construction.
Keeping the correct size helps preserve the S8’s intended stance on its 20-inch wheels, which is a major part of the car’s visual identity. From there, the appearance choice becomes more specific: Blackwall for a restrained modern look, or Redline and RWL for a more customized statement. Any restoration-minded tire choice should still begin with wheel compatibility and overall condition.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2008 Audi S8?
Yes. Even though the 2008 Audi S8 uses a straightforward 265/35R20 fitment, modifications can change whether that size works properly on the car as it sits today. Aftermarket wheels, altered wheel widths, suspension lowering, or body changes can all affect mounting and clearance.
A car that still uses its original-style wheel setup is much easier to size correctly than one that has been changed over time. Measuring the actual wheel diameter and checking steering, fender, and suspension clearance is worthwhile before replacing tires. That is especially important on a low-profile 20-inch fitment where wheel and tire proportions leave less room for assumptions.
What should I inspect before driving a 2008 Audi S8 on new tires?
Before driving a 2008 Audi S8 on new tires, inspect wheel condition, valve stems, tire pressure, and the general condition of the suspension and alignment-related components. The tires themselves should be checked for proper mounting, even seating on the rim, and any immediate signs of air loss or sidewall damage.
A quick visual check is not enough on a performance-oriented sedan with 20-inch wheels and low-profile tires. Road manners can be affected by bent wheels, worn bushings, or alignment problems that existed before the new tires were installed. It also helps to recheck pressure after initial use and watch for any rubbing, vibration, or uneven wear as the car returns to service.
How often should tires on a 2008 Audi S8 be inspected?
Tires on a 2008 Audi S8 should be inspected regularly, with special attention before longer drives and after any period of storage. A low-profile 265/35R20 tire can make wheel damage, pressure loss, uneven wear, and sidewall condition especially important to catch early.
Inspection should include tread wear, cuts, bulges, cracking, and changes in pressure, along with a look at the wheel itself for impact damage. Cars that are not driven often still need attention because age and storage conditions affect tires even when mileage stays low. Keeping the tires clean, properly inflated, and away from prolonged heat and sunlight helps preserve condition.
