Front, 19", Profile 3, 5 Lugs, Anthracite- Rear, 19", Profile 3, 5 Lugs, Anthracite
Audi B9 S4 Wheels
Lightweight forged & flow formed APEX wheels for your 2016+ Audi B9 S4
Construction Type
AllFinish: Anthracite
Total
$1,896.00$1,422.00Overview
Audi B9 S4 Wheel Performance
The B9 S4’s main party piece is its Quattro AWD system, which helps maintain traction and put the power down at all four corners of the car. From the factory, the OEM B9 S4 wheels leave a bit to be desired from both an aesthetic and performance standpoint. While the stock square setup allows for a more neutral handling balance at the limit, the OEM wheel/tire sizes tend to find that limit a bit sooner than they should. If you want to fully take advantage of your B9 S4’s chassis and drivetrain, a set of Apex B9 S4 wheels in a wide and aggressive fitment will allow you to do just that. We created forged wheels such as the Apex VS-5RS, and flow formed wheels such as the SM-10 to increase overall performance. You can check out all the offerings via our chassis specific B9 S4 Wheel & Tire Fitment Guide.
History of the B9 S4
Before you shop for a sweet set of B9 S4 wheels, let’s run through some of the history and technical details behind Audi’s acclaimed sport sedan.
The B9 S4 was initially unveiled at the 2015 Frankfurt Motor Show, with Audi debuting the European model of the 6th generation S4. The B9 S4 hit dealer showroom floors in 2017 and continues to be sold to this day. The B9 S4 is offered with a 3.0l V6 turbocharged motor in a “hot-vee” configuration with the twinscroll turbo mounted within the engine’s V, resulting in better throttle response and reduced turbo lag. Power is sent through an 8-speed ZF automatic transmission and to the ground via Audi’s Quattro AWD system that utilizes a locking center differential. In factory spec, this drivetrain allows the S4 to run the 0-60 sprint in an impressive 4.2 seconds.
B9 S4 Chassis Dynamics
In factory spec, the B9 S4 offers a refined and sporty driving experience, making it a great option for a comfortable and competent dual-duty performance car. Furthermore, the Quattro AWD system makes the B9 S4 a great choice for those who drive their cars year-round and throughout the winter months in inclement conditions. With the right modifications, these cars can be pretty fast out on the track.
While B9 S4 wheels are an important consideration once you already own one of these cars, there are quite a few other things to consider before purchasing a B9 S4. While there are plenty of things this car does well, there are also a few quirks to pay attention to, much like any other modern German high-powered car. Jalopnik wrote a great article discussing their favorite and not-so-favorite things about the B9 S4.
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SM-10 Specifications
Reproductive Harm - www.p65warnings.ca.cov 
REAL DRIVERS NEED REAL PERFORMANCE.
Not all claims of performance are backed up by facts—and it's a big problem. Don't get sold fashion when you want function.
Fitment guides
Which Wheels Should I Get?
Check out our Fitment Guides, the most in-depth, authoritative guides for wheel and tire fitments, tailored for your vehicle and how you drive it.
SM-10 features
The Flow Form Advantage
Flow forming enables us to create high performance wheels without the price premium of forging. It improves the mechanical properties and grain structure of the barrel, increasing its strength and stiffness, which allows us to use less material and reduce weight. Thanks to our superior engineering, our flow formed wheels have a higher load rating than some competitors' forged wheels.
"I" Beam Spokes
One of the most prominent features of the SM-10 is its advanced "I" beam spoke machining. Any excess material that doesn’t add strength is carved out from the sides of the spokes using a precision CNC ball cutter. This process is often deemed cost-prohibitive by others, but for performance without compromise we believe it's essential.
Bigger, Tougher Inner Lip
The inner lip is the most vulnerable part of a wheel because it has no spokes for support. Our Flow Formed Evolution line adds more material to this high-impact area as an extra layer of protection against track berms, potholes, and whatever else the road may throw at you.
Maximizing Concavity
We use the deepest concave face profiles we can for every application after factoring in critical clearances such as brake calipers. The SM-10 utilizes 3 unique profiles to make this possible, with the deepest concave face delivering reduced weight and a stunningly aggressive appearance.
Big Brake Clearance
Big brakes often require bigger, heavier, more expensive wheels, which aren’t ideal in a performance environment. The SM-10 is one of our many wheels which solve this problem. Through comprehensive laser scanning and endless rounds of test-fitting, we’ve created 18” wheels to clear huge brakes that typically require 19” wheels from other manufacturers.
Weight Optimized
We conducted extensive Finite Element Analysis (FEA) to reinforce high-stress areas and to remove material where it didn’t improve strength. The result is a wheel that is exceptionally light without the strength compromises found on typical lightweight wheels.²
Built for Impact Sockets
Track wheels need track tools. Don’t settle for wheels that require undersized tuner lugs or thin walled sockets. All APEX wheels accommodate over-sized race lugs and impact sockets to make swapping wheels lightning fast.
32mm
Socket Diameter Clearance
Finishing Touches
The SM-10 is finished using a multi-stage liquid paint over a powder coated base coat. This coating process leaves lug holes, center bores and mounting pads untouched, which ensures proper fit and torque values.
JWL and Beyond
All APEX Flow Formed wheels meet or meaningfully exceed JWL load rating requirements. Some manufacturers don't meet the minimum requirements, yet still claim to be compliant. Always compare load ratings to ensure you aren’t sacrificing critical strength for a slightly lighter wheel.
True VIA
The VIA is an independent wheel testing and auditing agency similar to TÜV. Many companies falsely claim their wheels have been certified, and even use the VIA stamp without permission. Our Flow Formed wheels have been certified, and we provide the registration numbers for every wheel. Protect yourself. Demand registration numbers from manufacturers.
Additional features
Hub Centric
All SM-10 wheels are purpose built for select vehicle applications. Very few applications require centering rings.
Center Caps
All APEX wheels come with our gloss black cap included that is interchangeable with the OE cap. We also offer additional colors for select fitments.
Wheel Hardware
APEX wheels can be used with all OEM mounting hardware, proper aftermarket hardware and most wheel spacers. Wheel locks and stud conversion kits also work perfectly.
TPMS
All APEX wheels accept OEM and aftermarket Tire Pressure Monitoring Sensors and standard fit valve stems. If you don’t have sensors, then select from our metal stems available in multiple finishes.
Accessories
A Wheel You Can Depend On
Accidental damage replacement
Curb rash or pothole damage on the street? Make an oopsie at the track? We’ve all been there. APEX is proud to offer 50% off replacement wheels, no matter the damage.
Lifetime warranty
All APEX wheels come with a lifetime structural warranty against defects in workmanship and materials, plus a 1 year finish warranty. Exchanges are fast, easy, and hassle-free.
¹ All wheels compared with equivalent 18x10” ET25 5x120mm /72.56mm fitment
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