About This Audi S4 Base 2004 Build
We love featuring real builds from real owners. This Audi S4 Base 2004 sits on a set of 18×9.5 / 18×9.5-inch ESR CS5 wheels, and the result speaks for itself.
The owner chose ESR for a reason. This brand delivers serious quality and a design language that turns heads at every car meet. We see hundreds of Audi S4 Base builds come through WheelFront every month, but this one stands out. The combination of the exterior with the ESR CS5 creates a look that balances aggression with elegance.
Fitment Breakdown: ESR CS5 on the Audi S4 Base 2004
I walked around this B6 S4 for ten minutes just to soak in the lines. Fitting 18x9.5 wheels on a 2004 S4 platform is a bold move. Most guys settle for 8.5 wide, but these 9.5s fill the arches with authority.
The +35 offset sits right in the pocket for this chassis. We cleared the massive front calipers without even needing a spacer. It is a tight fit, but that is exactly how we like it.
The hub bore fits the Audi factory specs perfectly. We hate dealing with hub rings when you can avoid them entirely. Everything centers up perfectly against the rotor hats.
Because the car sits on air suspension, the static rubbing isn't an issue at ride height. When you air out, the tires tuck neatly behind the fender liners. You need to watch your clearance on the inner liner tabs though.
The barrel lip depth on the CS5 gives the car a deep, aggressive profile. The spokes curve inward just enough to catch the light. It adds serious depth to an otherwise flat-looking fender well.
The 9.5 width makes the stance look wide and planted. You have to be careful about your tire choice here. A 235 or 245 tire is the absolute limit before you start chewing up your paint.
We checked the inner clearance near the uprights and control arms. There is just enough room to keep the wheels from kissing the suspension components. It is a precise fitment that rewards careful planning.
What We Recommend for Audi S4 Base 2004 Owners
If you want this look, stick to the 18-inch diameter. You can go to 19s, but the ride quality on the B6 platform suffers too much. Keep it functional for the street.
The +35 offset is your best friend on this car. Anything lower than +30 and you are begging for fender rolling work. We prefer to keep our body panels stock whenever we can.
I always suggest a square setup for the B6 S4. Staggered widths on an all-wheel-drive platform can really mess with your differentials. Keep the front and rear sizes identical to save your drivetrain.
Do not be afraid of a light stretch on the tire sidewall. It helps the rubber clear the fender lip when you air out. A 235/40/18 tire usually offers the best balance of looks and protection.
Avoid cheap hardware when installing these wheels. Use high-quality lug bolts with the correct seat type to ensure everything stays tight. You do not want a vibration ruining your weekend cruise.
Style and Build Analysis
The Gunmetal finish looks incredible against the Audi's factory paint. It is darker than silver but doesn't disappear into the shadows like black wheels often do. It provides just the right amount of contrast.
The ESR CS5 design features clean, sharp lines that match the S4's boxy, muscular aesthetic. It feels like a modern update to the classic Euro tuner style. The wheels look fast even when the car is parked.
Stance is everything on these older Audi models. By dropping the car on air, the wheel-to-fender relationship looks perfectly dialed in. The proportions make the car look lower and wider than the factory intended.
We see a lot of builds, but this one keeps it classy. It avoids the over-the-top drift look and leans into a clean, refined street aesthetic. It looks like a car that Audi should have built from the factory.
The way the light hits the spokes highlights the intricate design work of the CS5. It catches every detail as you walk past the car in the parking lot. You can tell the owner spent a lot of time obsessing over the details.
Why We Love This Build
This B6 S4 is a total showstopper. The Gunmetal finish glows under the streetlights and turns heads at every stoplight we hit. Seeing those wheels tuck neatly into the arches when the air bags release is pure automotive bliss.
It reminds me why we love the B6 platform so much. It is timeless, aggressive, and perfectly suited for this aggressive wheel setup. The build is honest and built to be driven hard.
If you have been looking for the right motivation to upgrade your own S4, this is it. This car hits the perfect balance between daily comfort and aggressive, custom style. Stop dreaming and start building.
Full Specs Breakdown
Here is exactly what this owner is running. We break down every detail so you can replicate this build or use it as a starting point for your own setup.
- Car Make & Model: Audi S4 Base 2004
- Vehicle Color:
- Wheel Brand & Model: ESR CS5
- Wheel Size: 18×9.5 / 18×9.5
- Offset: 35 / 35
- Wheel Finish: Gunmetal
- Tires: Nankang NS-25 225/35 24.2″x8.9″ / 225/35 24.2″x8.9″
- Suspension: Air Suspension
Before You Buy: Fitment Checklist
We talk to Audi S4 Base owners every day. These are the questions we hear most before they pull the trigger on new wheels.
Will 18×9.5 / 18×9.5-inch wheels fit my Audi S4 Base? Yes, but fitment depends on width, offset, and tire size working together. A wrong offset means rubbing. A wrong tire size means poor handling. Always verify all three.
Do I need to modify my fenders? That depends on your offset and suspension. A conservative offset with stock ride height usually fits without modification. Go aggressive and you may need to roll or pull your fenders.
Can I daily-drive this setup? Absolutely. Thousands of Audi S4 Base owners run 18×9.5 / 18×9.5-inch wheels every day. The key is choosing the right tire with enough sidewall to absorb road imperfections.
