The B9/B9.5 S4 hits different when it's sitting on proper wheels. Audi gave us a sleeper with serious bones — 354hp turbo V6, quattro grip, and suspension geometry that actually works. But those stock 18x8 +40s? They're tucked so far in you could fit a basketball between the tire and fender.

Good news: the S4's 5x112 bolt pattern opens up endless wheel options, and that sport suspension handles aggressive fitments without drama. We've put together 10 proven setups ranging from subtle OEM+ to full send flush fitments. Whether you're chasing that perfect daily stance or building a weekend canyon carver, these specs deliver. The B9 platform loves anything from 19x8.5 to 20x10.5, and with the right offset you can achieve flush, poke, or even mild tuck depending on your style.

Quick links

• Want new wheels for your Audi S4?
• Basic S4 fitment info
• Conservative Aftermarket Setups
• Aggressive Square Setups
• Staggered Performance Builds
• OEM+ Configurations
• Final Thoughts

Want new wheels for your Audi S4?

The B9/B9.5 S4 sits in that sweet spot where performance meets daily practicality — and the aftermarket knows it. These cars look incredible with the right wheel setup, especially when you ditch those conservative 18x8 +40 stockers for something with actual presence. The 5x112 bolt pattern opens up the entire Euro catalog, from aggressive TSW designs to show-stopping Rotiform builds.

Most S4 owners gravitate toward 19x9.5 or 20x10 setups with offsets in the +25 to +35 range for that perfect flush fitment. The platform handles wider wheels beautifully — we've seen plenty running staggered 20x9/20x10.5 combinations with zero issues. VMR and Niche remain popular choices for their balance of style and weight, while Weds brings that JDM flavor to German engineering.

Basic S4 fitment info

• Bolt pattern: 5x112mm
• Bolt thread: M14 x 1.5
• Center bore: 66.5mm
• Bolt torque: 103 ft lbs

The stock S4 rolls on 18x8 +40 wheels wrapped in 245/40R18 tires.

Brake Clearance

The B9 S4 runs 354mm (13.9") front rotors with 6-piston calipers across all trims — no base vs performance split here. These beefy stoppers demand 19" wheels minimum, though some aggressive 18" designs with spoke clearance might squeeze by. The real fitment killer? Those front calipers stick out far enough that most wheels under ET35 need 5-10mm spacers to clear, especially on 9" widths.

Running flush or poke setups? You're golden — the lower offsets naturally push wheels away from the calipers. But if you're chasing that tucked look with ET45+ wheels, budget for spacers or stick to designs with serious spoke clearance like the Rotiform RSE or Vossen HF-5.

Conservative Aftermarket Setups

These builds keep it clean with minimal suspension work — running 20x8 to 20x9 setups from Weds, Niche, and TSW that'll clear your stock calipers and give you that perfect OEM+ look without any fender rolling drama.

Fitment Facts
	Front	Rear
Wheels	TSW Bathurst 20x9 +40	TSW Bathurst 20x10 +40
Tires	245/30/20	270/30/20
Notes	Lowered

The TSW Bathurst 20x9 +40 fronts paired with TSW Bathurst 20x10 +40 rears transform this S4 into a proper street machine. The lowered stance with those 20s fills the wells perfectly — aggressive without being ridiculous. Running 245/30/20 up front keeps steering response sharp while the wider 270/30/20 rears put down all that turbocharged power.

The staggered setup makes sense on the S4 — Quattro loves extra rear meat for launching hard. That +40 offset sits flush without requiring rolled fenders, making this a solid daily-drivable setup that can still handle spirited canyon runs.

Fitment Facts
	Front	Rear
Wheels	Niche Essen 20x9 +40	Niche Essen 20x10 +40
Tires	245/30/20	270/30/20
Notes	Lowered

The Niche Essen 20x9 +40 fronts and Niche Essen 20x10 +40 rears transform this S4 into a proper street weapon. The staggered setup with 245/30/20 fronts and meaty 270/30/20 rears gives it that planted, aggressive stance without going overboard. The +40 offset all around sits flush with the lowered fenders—aggressive enough to turn heads but sensible enough for daily driving. That extra inch and 25mm of rubber out back helps put down the S4's quattro power while maintaining the balanced look Audi intended.

Fitment Facts
	Front	Rear
Wheels	Weds Sa55m 20x8 +42	Weds Sa55m 20x8 +42
Tires	245/30/20	245/30/20
Notes	Lowered

The Weds Sa55m 20x8 +42 square setup on this lowered S4 is playing it safe but smart. The +42 offset keeps everything tucked without drama, while the 245/30/20 rubber provides just enough sidewall for daily driving comfort. Those mesh-style Weds faces add Japanese tuner vibes to the German sedan without going full show car.

Could've gone more aggressive with the fitment, but this setup strikes a solid balance — clean stance without sacrificing practicality. Perfect for someone who wants their S4 to look good at cars and coffee but still needs to hit the office Monday morning.

Shop 20" Wheels

Aggressive Square Setups

Square setups on the B9 S4 let you rotate tires and run consistent suspension geometry, but going aggressive means pushing those offsets hard. These builds run Rotiform wheels in 20x8.5 and 20x10 configurations that fill the arches without compromising the Quattro's balanced handling.

Fitment Facts
	Front	Rear
Wheels	Rotiform LAS-R 20x8.5 +35	Rotiform LAS-R 20x8.5 +35
Tires	255/30/20	255/30/20
Notes	Lowered

The Rotiform LAS-R 20x8.5 +35 square setup on this S4 is playing it safe but smart. The multi-spoke design adds visual weight without going overboard, while the 255/30/20 tires provide just enough meat to avoid that stretched look. With the lowered suspension, the +35 offset tucks nicely without requiring any fender work — perfect for someone who wants an aggressive stance but still needs to navigate parking garages. This is a daily-friendly setup that won't have you sweating about rubbing on every driveway approach.

Fitment Facts
	Front	Rear
Wheels	Rotiform RSE 20x10 +35	Rotiform RSE 20x10 +35
Tires	255/30/20	255/30/20
Notes	Lowered

The Rotiform RSE 20x10 +35 square setup transforms this S4 into a proper German street machine. That +35 offset pushes the mesh faces right to the fender lips without going full poke-and-pray. Running 255/30/20 rubber all around keeps the handling neutral — smart move for an AWD platform that already understeers at the limit.

This is daily-friendly aggression done right. The Rotiform RSE 20x10 +35 fills the lowered wheel wells perfectly, and those 255/30/20 tires provide enough sidewall to survive real roads. No spacers needed, minimal rubbing risk — just bolt on and drive.

Shop 20" Wheels

Staggered Performance Builds

Staggered setups on the B8/B8.5 S4 deliver that aggressive stance without sacrificing the Quattro's balanced handling — here's a VMR 20x9 square setup that proves you don't always need different widths to get the look right.

Fitment Facts
	Front	Rear
Wheels	VMR V801 Titanium Black Shadow 20x9 +35	VMR V801 Titanium Black Shadow 20x10 +35
Tires	245/30/20	270/30/20
Notes	Lowered

The VMR V801 Titanium Black Shadow 20x9 +35 fronts and VMR V801 Titanium Black Shadow 20x10 +35 rears transform this S4 into something sinister. That Titanium Black Shadow finish against the lowered stance hits different — aggressive without being try-hard. The staggered setup with 245/30/20 fronts and 270/30/20 rears gives just enough meat out back for Quattro launches while keeping the profile low enough to look proper. At +35 offset all around on a lowered setup, you're probably kissing the fenders on hard compression, but that's the price of looking this good.

Shop 20" Wheels

OEM+ Configurations

OEM+ keeps the factory's clean aesthetic while stepping up to proper sizes — these S4s run 19x8.5 to 20x9 setups that maintain Audi's flush fitment philosophy without looking like you raided the dealership parts bin.

Fitment Facts
	Front	Rear
Wheels	Audi S5 Cavo 19x8.5 +32	Audi S5 Cavo 19x8.5 +32
Tires	255/40/19	255/40/19
Notes	Stock

The Audi S5 Cavo 19x8.5 +32 wheels running square are the definition of playing it safe. This OEM+ approach with 255/40/19 rubber all around keeps the S4's stock composure intact — no rubbing, no drama, just clean daily driving. The +32 offset sits conservatively in the wells without any aggressive poke or tuck.

While this setup won't turn heads at meets, it's bulletproof for spirited canyon runs and commuting. The 255/40/19 tires provide decent grip without sacrificing comfort on stock suspension. Sometimes the smartest move is keeping things simple.

Fitment Facts
	Front	Rear
Wheels	Audi Q7/SQ7 20x9 +33	Audi Q7/SQ7 20x9 +33
Tires	265/30/20	265/30/20
Notes	Lowered

Running Audi Q7/SQ7 20x9 +33 wheels all around is a clever OEM+ move that keeps the S4 looking factory aggressive. The square setup with 265/30/20 tires gives you that meaty sidewall-to-wheel ratio without going full stance nation. The +33 offset tucks nicely under lowered fenders without requiring rolled arches or crazy camber.

This setup screams daily-driven performance — wide enough to put power down but not so aggressive you're dodging potholes. The Q7/SQ7 wheels have that factory forged look that matches the S4's understated muscle car vibe perfectly.

Fitment Facts
	Front	Rear
Wheels	Unknown Unknown 19x8 +42	Unknown Unknown 19x8 +42
Tires	245/35/19	245/35/19
Notes	Lowered

This S4's running a conservative square setup with Unknown Unknown 19x8 +42 wheels all around on 245/35/19 rubber. The +42 offset is basically OEM-friendly territory, so this is clearly a daily-focused build that prioritizes clean fitment over aggressive stance. With the lowered suspension, it'll tuck nicely without any fender drama.

Square 245/35/19 setups like this maintain the S4's neutral handling characteristics while providing enough meat for spirited driving. The 19x8 +42 spec is perfect for someone who wants to upgrade from stock without dealing with rubbing issues or needing to roll fenders.

Fitment Facts
	Front	Rear
Wheels	Unknown Multi-spoke aftermarket 19x8.5 +35	Unknown Multi-spoke aftermarket 19x8.5 +35
Tires	255/35/19	255/35/19
Notes	Lowered

This S4 sits perfectly on a square setup of Unknown Multi-spoke aftermarket 19x8.5 +35 wheels wrapped in 255/35/19 tires all around. The +35 offset tucks the wheels just right with the lowered suspension, giving it that aggressive German sedan stance without going overboard. Running a square setup on the B8/B8.5 platform keeps the Quattro system happy while the meaty 255-width rubber provides plenty of grip for spirited driving. This is a smart daily-driver spec that won't require fender work but still transforms the car's presence.

Shop 19" Wheels

Final Thoughts on Audi S4 Fitment

The B9/B9.5 S4 handles aggressive fitment surprisingly well. Most owners gravitate toward 20x9 +30 to +35 for that perfect flush look without major modifications. You can push it to 20x10 in the rear with the right offset, but expect some fender work if you're lowered more than an inch. The 5x112 bolt pattern opens up tons of wheel options, and this platform looks best with a slight drop on coilovers or sport springs.

For daily driving, stick with 20x9 +35 wrapped in 255/35 tires — aggressive enough to transform the car's stance but practical enough to avoid rubbing issues. Want more? 20x9.5 +30 with 265/35s fills the arches beautifully, though you'll need to dial in your suspension height. The S4's wider track compared to the A4 gives you more room to play with, especially if you're running adjustable camber arms.

Ready to upgrade your S4's stance? Browse our 5x112 wheel selection from the brands featured in this guide. ThreePiece.us stocks everything from subtle OEM+ setups to show-stopping concave designs that'll have everyone asking about your fitment at the next meet.