Audi S5 Wheel Fitment Guide (2020-2025) | 5x112mm
The B9.5 S5 is one of those cars that looks good stock and looks incredible the second you ditch the factory 18x8.5 +29 wheels. That 3.0T under the hood and the Quattro grip are only half the story — the sheetmetal on this thing has proper arches begging for wider, deeper faces. Audi gave you a clean canvas with the 5x112mm bolt pattern and 66.5mm center bore, and the aftermarket support for that spec is enormous.
What makes the S5 so fun to build is how well it responds to a bump in width and a drop in offset. You go from the tucked-in factory look to a proper flush stance without fighting the car every step of the way. And because it's a daily-friendly platform, most owners want a setup that fills the fenders cleanly and rolls without drama — which is exactly what square fitments deliver.
We've pulled together four ThreePiece.us curated setups for the 2020-2025 S5, all running square wheel and tire packages front to rear. Whether you want subtle and functional or a full staggered-face statement, there's a build here worth copying. Let's get into them.
Quick links
- Want new wheels for your Audi S5?
- Basic S5 fitment info
- 19-Inch Square Setup
- 20-Inch Square Setups
- Final Thoughts
Want new wheels for your Audi S5?
Want New Wheels for Your Audi S5?
The B9 S5 rolls off the line on 18x8.5 +29 wheels — clean, but conservative. Its 5x112mm bolt pattern opens up a massive catalog of quality wheels, and stepping up to a 19 or 20-inch setup transforms the stance without touching anything mechanical. That factory offset gives you a solid baseline to build from when you're chasing that filled-out fender look.
We stock the full range here — cast, flow-formed, and full forged. The Variant and Neuspeed lines are the smart-money picks for a lightweight, bolt-on upgrade, while HRE and BC Forged bring fully custom forged options if you want to spec your own widths and finishes.
Every S5 setup we've curated below runs square — same wheel and tire at all four corners for even wear and predictable handling. Pick your diameter, dial in the look, and we'll help you get the fitment right.
Basic S5 fitment info
- Bolt pattern: 5x112mm
- Center bore: 66.5mm
The stock S5 rolls on 18x8.5 +29 wheels wrapped in 245/40R18 tires.
Brake clearance
The 2020-2025 B9/B9.5 S5 runs a serious front setup for a non-RS car: 350x34mm rotors squeezed by six-piston fixed calipers up front, with 330x22mm single-piston floating calipers out back. Audi quotes 17" as the minimum wheel diameter for that 6-piston fixed front, but realistically most enthusiasts start at 18".
Diameter alone doesn't guarantee fitment here. Spoke shape and barrel profile matter more than raw size — a wheel can clear the diameter and still catch the caliper depending on the inner spoke design and offset. Test-fit before you commit, and if a specific wheel's spoke geometry sits too close, a thin spacer is the usual fix to pull the barrel clear.
Going square 18x8 or 19x9 keeps you well clear of the factory 350mm brakes with room to spare for most BBK setups.
19-Inch Square Setup
Running one width all the way around keeps things clean and rotation-friendly on the S5, and this section leans on a square Neuspeed setup in 19x9.5 at all four corners.
| Fitment Facts | ||
| Front | Rear | |
| Wheels | Neuspeed RSe102 19x9.5 +25 | Neuspeed RSe102 19x9.5 +25 |
| Tires | 275/35/19 | 275/35/19 |
| Notes | Stock | |
There's something clean about a square setup done right, and this S5 nails it. The Neuspeed RSe102 19x9.5 +25 at all four corners gives the car a balanced, purposeful stance — no gimmicks, just an even footprint that suits the S5's proportions.
Wrapped in 275/35/19 on all four, the tire fills the wheel nicely and keeps things planted on the stock suspension. It's an uncomplicated, cohesive look that lets the RSe102 do the talking.
20-Inch Square Setups
Square is the move on the S5 if you want balanced grip and the option to rotate — and these three builds run 20s on all four corners, from a 20x9 setup on Variant to wider 20x10s on HRE and BC Forged. Here's how we'd spec each one.
| Fitment Facts | ||
| Front | Rear | |
| Wheels | BC Forged Modular 20x10 +23 | BC Forged Modular 20x10 +23 |
| Tires | 285/30/20 | 285/30/20 |
| Notes | Stock | |
Square and clean — the BC Forged Modular 20x10 +23 sits at all four corners, giving this S5 a purposeful, uniform footprint that keeps things balanced front to rear. On stock suspension, that +23 offset pulls the face out just enough to make the wheels the centerpiece.
The 285/30/20 wraps each corner with a low, tight sidewall that lets the BC Forged Modular do the talking. Understated but dialed — exactly how a proper S5 should sit.
| Fitment Facts | ||
| Front | Rear | |
| Wheels | Variant Argon 20x10 +30 | Variant Argon 20x10 +30 |
| Tires | 275/30/20 | 275/30/20 |
| Notes | Lowered on H&R Sport Springs | |
This S5 keeps it clean and consistent — the Variant Argon 20x10 +30 sits at all four corners, giving the car a balanced, purposeful footprint. Square setups like this look tight and deliberate, and the Variant Argon 20x10 +30 has the width to fill the arches without shouting about it.
Wrapped in 275/30/20 at every corner and dropped on H&R Sport Springs, the stance tucks in nicely. The 275/30/20 stretch keeps the sidewall taut and the whole thing planted.
| Fitment Facts | ||
| Front | Rear | |
| Wheels | HRE ff01 20x9 +25 | HRE ff01 20x9 +25 |
| Tires | 275/30/20 | 275/30/20 |
| Notes | Abt HAS springs 1" lower | |
This is what restraint looks like done right. A square setup of HRE ff01 20x9 +25 on all four corners keeps the S5 looking balanced and purposeful, no gimmicks. The 275/30/20 wrapped around each corner gives a clean, meaty sidewall without going overboard.
Drop it 1" on the Abt HAS springs and the whole thing tucks into itself. The HRE ff01 20x9 +25 face sits exactly where you want it. Understated, quick, and easy to live with.
Final Thoughts on Audi S5 Fitment
Final Thoughts
Across all four builds in this guide, the pattern is clear: the B9.5 S5 responds beautifully to a square setup, and the sweet spot lives in that 20x10 +23 to +30 window. That combination fills the arches without drama and keeps the stance planted, which is exactly what this chassis wants. If you're after a slightly more classic look, dropping to a 19" diameter in the same offset range gives you more sidewall to work with while keeping the fitment tight.
For most people building a daily-driven S5 that still needs to look sharp at a meet, the 20x10 in the +23 to +30 range is the setup I'd point you toward first — it's the most common size here for good reason, and it delivers a clean, flush-leaning face without asking you to overthink it. The 19" options are worth a look if you prioritize ride comfort and tire protection over the last bit of wheel diameter. Either way, staying square across all four corners keeps your setup simple, balanced, and easy to rotate.
Whichever direction you go, dial in your tire sizing to match the wheel width so you've got proper meat under the car and a fitment that ages well. ThreePiece.us carries all the brands featured in these builds, so once you've settled on a diameter and offset, we can get you sorted with the wheels and tires to match.