About This Kia Optima S 2018 Build
We love featuring real builds from real owners. This Kia Optima S 2018 sits on a set of 18×8 / 18×8-inch RTX Black Widow wheels, and the result speaks for itself.
The owner chose RTX for a reason. This brand delivers serious quality and a design language that turns heads at every car meet. We see hundreds of Kia Optima S builds come through WheelFront every month, but this one stands out. The combination of the exterior with the RTX Black Widow creates a look that balances aggression with elegance.
Fitment Breakdown: RTX Black Widow on the Kia Optima S 2018
I caught this Optima S at the local meet last weekend and the stance immediately grabbed my attention. These 18x8 RTX Black Widows sit perfectly flush with the fenders on all four corners. That 42 offset keeps everything tucked inside the factory metal without looking sunken or weak.
We see a lot of Optimas struggling with clearance, but these wheels solve that issue entirely. The 18-inch diameter fills the wheel well just right without making the ride feel harsh or bouncy. You get enough sidewall to survive potholes while maintaining a sharp, performance-oriented aesthetic.
The hub bore sits right where it needs to be for a direct fit on the Kia platform. I checked the caliper clearance personally and the spoke design provides plenty of room for the factory brakes. You won't need to mess with hub rings or custom adapters here.
Because the owner chose lowering springs, the fender gap is finally gone. The suspension drop brings the tire shoulder right up to the fender liner. It looks aggressive, but the setup avoids any nasty rubbing issues during hard cornering.
The Black Machined finish adds a nice layer of depth to the spokes. Those machined highlights catch the light as the wheels rotate, drawing your eye straight to the center caps. It’s a subtle touch that elevates the entire wheel design.
We always look for potential trouble spots, but this build keeps it clean and functional. The barrel lip depth is conservative enough that you don't risk curbing your wheels on every tight driveway. Everything stays safe and tucked under the body lines.
What We Recommend for Kia Optima S 2018 Owners
If you want to replicate this look, stick to an 18-inch wheel diameter. Going up to 19s often ruins the ride quality on these sedans. Keep the width at 8 inches to ensure you don't poke past the fenders.
Aim for an offset between 35 and 45 for the best results. The 42 offset used on this build is the absolute sweet spot for a clean, daily-driver stance. Anything lower than 30 will force you to roll your fenders or stretch your tires.
We always suggest a square setup for the Optima. Staggered wheels on a front-wheel-drive platform just don't make any sense. Keep your rotations easy and your handling predictable by running the same size all the way around.
Don't fall for the trap of buying cheap spacers to fix bad fitment. If you choose the right offset initially, you never need to compromise your wheel studs. Do it right the first time and save yourself the headache.
Check your tire sizing carefully before you mount them. A 235/45/18 tire is the gold standard for this car. It provides enough meat to protect the rim while keeping the speedometer accurate and the handling responsive.
Style and Build Analysis
The Black Machined finish on these Black Widows creates a killer contrast against the body paint. The dark pockets hide brake dust, while the machined faces pop against the street lighting. It gives the car a much more premium feel than the factory wheels ever could.
The spoke pattern feels mechanical and industrial. It fits the sharp, angular design of the 2018 Optima perfectly. You can see how the lines of the wheels echo the sharp creases in the sedan's side panels.
This build proves that you don't need a wide-body kit to turn heads. The stance is purposeful and clean, not over the top or obnoxious. It looks like something the factory should have offered as a high-end trim package.
We’ve seen plenty of Optimas running generic multi-spokes, but the RTX choice stands out. It breaks up the visual weight of the car without being too busy. The proportions are balanced, making the car look longer and lower than it actually is.
Everything about this car says the owner pays attention to the details. From the specific offset choice to the subtle lowering springs, it’s a cohesive vision. It shows that good taste beats a massive budget every single day.
Why We Love This Build
Seeing this Optima roll into the lot felt like a breath of fresh air. The Black Machined finish catches every flicker of sunlight, making the wheels look like they are spinning even when the car is parked. That drop from the springs pulls the whole chassis together, giving the car a hungry, aggressive posture that standard Optimas usually lack.
We love this build because it feels attainable yet totally unique. It turns a commuter car into a genuine head-turner without sacrificing any of its daily utility. This is exactly how you modify a modern sedan to stand out from the crowd.
If you want to transform your drive, stop overthinking and start building. This Optima proves that the right set of wheels changes everything. Just go get them.
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: Kia Optima S 2018
- Vehicle Color:
- Wheel Brand & Model: RTX Black Widow
- Wheel Size: 18×8 / 18×8
- Offset: 42 / 42
- Wheel Finish: Black Machined
- Tires: Continental Extremecontact DWS06 Plus 235/45 26.3″x9.3″ / 235/45 26.3″x9.3″
- Suspension: Lowering Springs
Before You Buy: Fitment Checklist
We talk to Kia Optima S owners every day. These are the questions we hear most before they pull the trigger on new wheels.
Will 18×8 / 18×8-inch wheels fit my Kia Optima S? 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 Kia Optima S owners run 18×8 / 18×8-inch wheels every day. The key is choosing the right tire with enough sidewall to absorb road imperfections.
