About This Audi RS4 B9 Build
We love featuring real builds from real owners. This Red Audi RS4 B9 sits on a set of 20×10-inch Riviera RF108 wheels, and the result speaks for itself.
The owner chose Riviera for a reason. This brand delivers serious quality and a design language that turns heads at every car meet. We see hundreds of Audi RS4 builds come through WheelFront every month, but this one stands out. The combination of the Red exterior with the Riviera RF108 creates a look that balances aggression with elegance.
Fitment Breakdown: Riviera RF108 on the Audi RS4 B9
I walked around this RS4 for twenty minutes just to admire the stance. The 20x10 Riviera RF108 setup hits the mark perfectly on the B9 chassis. We see a lot of builds, but this one nails the aggressive factory plus look.
The ET38 offset pushes the wheels right to the edge of the fenders. It creates a flush profile that transforms the car’s presence. You get a wide track without needing excessive camber adjustments.
Caliper clearance is always the elephant in the room with the RS4 brakes. These RF108 spokes arch beautifully to clear those massive front stoppers. You will not need spacers to make these fit over the factory calipers.
The hub bore sits perfectly, so no vibration issues here. That precision fit makes the car feel tight and planted on the highway. We hate dealing with hub rings, and this setup keeps things simple.
I looked at the barrel lip depth and it provides a great sense of scale. The concave profile of the RF108 draws your eye straight into the center cap. It looks intentional and purposeful, not like an afterthought.
If you run stock suspension, you might find a bit of gap remains. Lowering springs or coilovers will tighten that up significantly. Just watch your inner liner clearance if you decide to slam it.
We saw zero signs of rubbing on the front liners during our test drive. The 10-inch width is the absolute sweet spot for this generation. It fills the wheel well without sacrificing the handling dynamics Audi engineered into the car.
What We Recommend for Audi RS4 B9 Owners
If you want this look, stick to the 20x10 sizing. It balances the weight and the visual mass of the RS4 perfectly. Going wider starts to ruin the scrub radius and ruins the steering feel.
Stick to an offset between ET35 and ET40 for a flush fit. Anything lower than ET35 will poke too much and spray rocks down your paint. Anything higher than ET40 will look tucked and lazy.
Avoid staggered setups on these Quattro systems unless you calculate the rolling diameter precisely. A square setup is safer for your center diff and makes tire rotations easy. We always recommend square for daily drivers.
Pick a performance tire that matches the width of the rim. You want a square sidewall, not that stretched look that ruins the ride. A 275/30/20 tire is usually the gold standard for this specific wheel width.
Don't fall for the trap of cheap, heavy cast wheels. The flow-forming process on the RF108 keeps the unsprung weight manageable. Your suspension will thank you every time you hit a pothole or a twisty road.
Style and Build Analysis
The Gloss Black finish against the Misano Red paint is a classic, aggressive combination. It creates a high-contrast look that pops under direct sunlight. The red is bold, but the black wheels give it a menacing, tactical edge.
The split-spoke design of the RF108 mimics modern performance aesthetics perfectly. It feels light and airy compared to the chunky stock Audi wheels. This design lets you see the brake rotors clearly, which is a must on an RS model.
Proportions are everything when you modify a car like this. The 20-inch diameter fills the arches without looking like a cartoon. It keeps the car looking like it could have rolled out of the factory if Audi offered a more aggressive Sport package.
I compare this to other builds we see, and most get the wheel choice wrong. Some people go too flashy with polished lips or chrome. The dark, understated approach of the RF108 keeps the focus on the sharp lines of the B9 body.
This car looks fast even when it is sitting parked at a show. The gloss finish catches the reflection of the pavement, tying the whole lower half of the car together. It is a cohesive, well-thought-out visual package.
Why We Love This Build
This RS4 stops us in our tracks because it looks cohesive and mean. The red paint glows under the sun, and the black wheels ground the entire aesthetic. It strikes that rare balance between a daily driver and a serious canyon carver.
Every time the car rolls forward, those wheels catch the light and create a blur of pure aggression. It is the kind of build that makes you look back every single time you walk away. This is how you modify a modern performance icon.
If you own an RS4, take this as your sign to ditch the factory wheels. This setup changes the personality of the car entirely. Get yourself a set of RF108s and go drive.
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 RS4 B9
- Vehicle Color: Red
- Wheel Brand & Model: Riviera RF108
- Wheel Size: 20×10
- Offset: ET38
- Wheel Finish: Gloss Black
Before You Buy: Fitment Checklist
We talk to Audi RS4 owners every day. These are the questions we hear most before they pull the trigger on new wheels.
Will 20×10-inch wheels fit my Audi RS4? 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 RS4 owners run 20×10-inch wheels every day. The key is choosing the right tire with enough sidewall to absorb road imperfections.
