Published by Rims & Tires
Compiled & checked by the site's publisher from manufacturer, NHTSA & USTMA data · Updated 2026-07-24
The Audi S4 is the performance variant of the A4: same body, 349-hp turbocharged 3.0L V6, sport suspension, and Quattro AWD. Unlike a lot of performance sedans, the S4 runs a square fitment — same tire size all four corners. That's what makes full rotation practical, and it's one of the few mid-size performance sedans where 4-wheel rotation is fully supported from the factory.
Audi S4 Tire Sizes and OEM Fitment
The current B9/B9.5 S4 (2017-present) ships standard on 245/40R18. The 19-inch wheel package — including Black Optic — uses 255/35R19. Either way it's the same size on all four corners, which is what makes full rotation possible.
The B8/B8.5 S4 (2009-2016) used 245/40R18 as the standard size — also square, all four corners.
OEM tires on the S4 include Pirelli P Zero (AO), Continental SportContact, and Bridgestone Potenza in OE-marked compound versions specific to the S4 platform. These are validated for the S4 suspension tuning but are not required for replacement — any performance tire matching load and speed index works.
Best Performance Tires for the S4
For the 255/35R19 fitment: the Michelin Pilot Sport 4S is the top summer recommendation for the S4. Best wet and dry grip available in this size, consistently preferred on Audi-specific forums.
The Continental SportContact 7, also available in 255/35R19, is the strongest competitor — some S4 owners prefer its steering feedback characteristics over the PS4S.
For S4 owners who want year-round performance: the Michelin Pilot Sport A/S 4 gives up approximately 10-15% of summer tire peak grip in exchange for 3PMSF winter certification. Georgia's winters are mostly rain and cold, rarely ice, so the PA/S 4 is a practical one-tire solution here.
Continental ExtremeContact DWS06+ is the value-tier UHP all-season, available in 255/35R19: significantly less expensive than the Michelin with competitive performance.
Frequently asked
What size tires does the Audi S4 use?
B9/B9.5 S4 (2017-present): 245/40R18 standard 18-inch; 255/35R19 on 19-inch wheel packages including Black Optic. B8/B8.5 S4 (2009-2016): 245/40R18 standard, 255/35R19 optional 19-inch. All square setups — same size all four corners.
Can you rotate Audi S4 tires?
Yes, the S4 runs the same tire size on all four corners in every trim, so front-to-rear rotation every 5,000 to 7,500 miles is straightforward. The 349-hp output stresses tires hard under acceleration — regular rotation is what keeps wear even and keeps you well above Georgia's 2/32-inch legal tread minimum (O.C.G.A. § 40-8-74).
What are the best tires for the Audi S4?
Summer: Michelin Pilot Sport 4S or Continental SportContact 7. All-season: Michelin Pilot Sport A/S 4 or Continental ExtremeContact DWS06+. All available in 255/35R19.
Should I run summer or all-season tires on my S4?
For a year-round S4 in West Georgia, a sport all-season is usually the practical pick — you keep most of the grip and gain cold-weather safety that summer tires lose when it dips toward freezing. If the S4 is more of a warm-weather driver's car, dedicated summer rubber is sharper. Just don't leave summer tires on through a cold snap, since the compound goes hard and grip drops.
How do I know when my S4 needs new tires?
Do the penny test, and on a quick Quattro car pay attention to how it feels in the rain, since wet grip fades before the tread hits the legal limit. Because the S4 runs a square setup, rotating on schedule keeps all four wearing together. Watch for cracking, and don't ignore age even when there's tread left.
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Last updated 2026-07-24. General guidance only — confirm specifics with a local shop for your exact vehicle.