About This Audi S5 Base 2009 Build
We love featuring real builds from real owners. This Audi S5 Base 2009 sits on a set of 20×10.5 / 20×11.5-inch WatercooledIND Mt100 wheels, and the result speaks for itself.
The owner chose WatercooledIND for a reason. This brand delivers serious quality and a design language that turns heads at every car meet. We see hundreds of Audi S5 Base builds come through WheelFront every month, but this one stands out. The combination of the exterior with the WatercooledIND Mt100 creates a look that balances aggression with elegance.
Fitment Breakdown: WatercooledIND Mt100 on the Audi S5 Base 2009
I walked up to this S5 and immediately noticed the sheer aggression of the WatercooledIND Mt100 setup. We are talking about a massive 20x10.5 in the front and a 20x11.5 in the rear. These widths push the absolute limits of the B8 chassis.
The offsets here are wild, sitting at +5 up front and +18 in the back. This choice forces those wheels to poke aggressively before the bags drop. It creates a profile that screams custom fabrication.
You have to worry about the factory calipers with these faces. The Mt100 design offers decent clearance, but you need to verify your brake package carefully. We did not see any spacers here, so the hub bore fitment must be spot on.
The fender gap is non-existent because of the air suspension system. When this car airs out, the fenders sit perfectly between the lip and the tire. It is a precise game of millimeters that avoids body damage.
Those deep barrels require serious attention to your inner liner clearance. Without trimmed liners, the front wheels will chew through plastic on every turn. We recommend checking your steering lock to avoid frame contact.
The spoke design pulls the eye right to the center of the wheel. It creates a visual depth that a flat-faced wheel just cannot touch. You really feel the weight and the craftsmanship when you look at that lip profile.
If you run this setup, prepare to deal with negative camber settings. You will need adjustable control arms to tuck the top of the tire inward. Without that adjustment, you will destroy your fenders during a drive.
What We Recommend for Audi S5 Base 2009 Owners
Don't just jump into a 10.5-inch wide wheel without a plan for the fenders. Most street-driven S5 builds perform better with a 20x10 setup square. It keeps the handling predictable and the fitment much easier to manage.
If you want the deep dish look, aim for offsets between +25 and +35. You get the flush look without the constant fear of cracking your paint. Anything lower than +20 starts to require major body work.
We always suggest a slight tire stretch to help clear those arches. A 255 or 265 width tire on a 10.5-inch rim gives you that clean look. It creates the necessary room to tuck without rubbing on the inner fender.
Staggered setups look great on the B8, but be careful with your rolling diameter. If your front and rear tire heights differ too much, you will trigger the Quattro system sensors. Stick to matched rolling diameters to keep the driveline happy.
Never ignore your alignment after installing new wheels. You need a performance alignment to make sure the car tracks straight. A bad alignment will ruin your expensive tires in less than a thousand miles.
Avoid cheap hub-centric rings if you can. Always go for wheels machined specifically to the 66.6mm Audi hub bore. It eliminates vibration and ensures the wheel seats perfectly against the rotor hat.
Style and Build Analysis
The custom finish on these Mt100s completely changes the mood of this Audi. It catches the sunlight and reflects the body lines in a way factory silver never could. The contrast makes the car look wider and lower than stock.
I love how the spokes reach all the way to the outer edge of the rim. It makes the twenty-inch wheels look even larger than they are. The design feels timeless but carries a distinct modern edge.
The air suspension allows the car to change its personality instantly. At ride height, it looks like a refined grand tourer. When it sits on the ground, it turns into a predatory show car.
We see a lot of S5 builds, but this one hits differently because of the proportions. Most guys go too safe with their offsets and regret it later. This owner took the risk and it paid off in pure road presence.
This car commands attention at any meet. The way the light dances across the custom finish highlights the intricate details of the wheel faces. It is a masterclass in how to build a car with actual character.
Why We Love This Build
This S5 is everything we love about the car scene. The custom WatercooledIND Mt100 wheels fill the arches with surgical precision, turning a standard coupe into a rolling work of art. When the air system drops, the car hugs the ground like it was born to be there. We love how the custom finish creates a mood that changes with every shift in the sun. This build captures the perfect balance between aggressive engineering and pure aesthetic beauty. It makes us want to run back to the garage and start turning wrenches on our own projects. This is the kind of fitment that ruins you for anything else.
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 S5 Base 2009
- Vehicle Color:
- Wheel Brand & Model: WatercooledIND Mt100
- Wheel Size: 20×10.5 / 20×11.5
- Offset: 5 / 18
- Wheel Finish: Custom
- Tires: Michelin Pilot Sport 4 S 255/30 26″x10″ / 295/25 25.8″x11.6″
- Suspension: Air Suspension
Before You Buy: Fitment Checklist
We talk to Audi S5 Base owners every day. These are the questions we hear most before they pull the trigger on new wheels.
Will 20×10.5 / 20×11.5-inch wheels fit my Audi S5 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 S5 Base owners run 20×10.5 / 20×11.5-inch wheels every day. The key is choosing the right tire with enough sidewall to absorb road imperfections.
