The 2020 Mercedes-Benz SLC300 arrived as the final chapter of Mercedes-Benz’s compact rear-drive roadster line, blending modern grand-touring manners with a short-wheelbase convertible layout that depends heavily on correct tire fitment. This car uses staggered radial tire sizing, with narrower front and wider rear tires, and it appears with either 17-inch or 18-inch wheel packages. That means the real choice is not just brand, but also matching the correct front and rear size pair, wheel diameter, and sidewall style. For owners balancing clean road manners, a tailored appearance, and proper fitment, confirming the exact wheel setup comes first.
Which Tire Size Is Right for The 2020 Mercedes-Benz SLC300
The 2020 Mercedes-Benz SLC300 uses four primary tire sizes because fitment is staggered front to rear and differs between 17-inch and 18-inch wheel packages. The first step is confirming both the wheel diameter on the car and whether you are selecting a front or rear tire, since the sizes are not interchangeable across all positions.
In 225/40R18, the 225 identifies nominal section width in millimeters, 40 is the aspect ratio, R designates radial construction, and 18 is the rim diameter in inches. On the 2020 Mercedes-Benz SLC300, this is a front tire size used with the 18-inch staggered setup, so it works as part of a matched front-to-rear package rather than as a stand-alone universal fitment. Available choices include BFGoodrich and Nitto options in blackwall form across series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. This size matters when preserving the intended 18-inch front fitment and maintaining the correct relationship to the wider rear tire.
In 225/45R17, the 225 is the tire’s nominal width in millimeters, 45 is the aspect ratio, R means radial, and 17 is the wheel diameter in inches. This size serves the front position on the 17-inch staggered setup for the 2020 Mercedes-Benz SLC300, so it should be paired with the matching rear size on the same wheel package. Product choices include BFGoodrich, Nitto, and Pro-Trac offerings, with blackwall, raised white letter, and redline sidewall treatments available in different series. It is the right front size to evaluate when the car is equipped with 17-inch wheels and appearance choice matters along with fitment.
In 245/35R18, the 245 refers to nominal section width in millimeters, 35 is the aspect ratio, R indicates radial construction, and 18 is the wheel diameter in inches. For the 2020 Mercedes-Benz SLC300, this is the wider rear tire used with the 18-inch staggered arrangement, giving it a distinct role from the corresponding front size. The available product in this size is a BFGoodrich g-Force Phenom T/A blackwall radial, keeping the selection focused but still tied to proper rear-position fitment. This size should be chosen only when confirming an 18-inch rear wheel setup on the car.
In 245/40R17, the 245 identifies nominal section width in millimeters, 40 is the aspect ratio, R means radial construction, and 17 indicates a 17-inch rim. This size is the rear companion to the 17-inch front fitment on the 2020 Mercedes-Benz SLC300, so it belongs to the car’s staggered rear position rather than to all four corners. BFGoodrich offers this size in several blackwall series, including g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A. It is the size to compare when the car has 17-inch rear wheels and you want to keep the correct front-to-rear sizing balance.
Fitment is consistent across the covered SLC300 sub-models, but it still depends on wheel diameter and tire position. Both Base and Final Edition configurations use the same front and rear size pairings, so the key is confirming whether the car has the 17-inch or 18-inch setup.
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2020 Mercedes-Benz SLC300 Base Front
The 2020 Mercedes-Benz SLC300 Base Front uses the same two front tire sizes found elsewhere in the model range, depending on whether the car carries 17-inch or 18-inch wheels. Front tire selection should follow the actual wheel package on the car and stay coordinated with the matching rear size.
The 2020 Mercedes-Benz SLC300 Base Rear uses the corresponding wider rear sizes for either the 17-inch or 18-inch staggered setup. Rear tire choice should be matched to wheel diameter first, then kept in step with the correct front fitment for balanced overall setup.
The 2020 Mercedes-Benz SLC300 Final Edition Front follows the same front fitment pattern as the Base version, using one front size for 17-inch wheels and another for 18-inch wheels. Selecting the right tire comes down to confirming wheel diameter and choosing a front tire that matches the rear package already on the car.
The 2020 Mercedes-Benz SLC300 Final Edition Rear uses the same wider rear sizing strategy as the Base model, with separate sizes tied to 17-inch and 18-inch wheels. That keeps tire selection straightforward once wheel diameter is verified and the front and rear pair are chosen as a matched staggered set.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 2020 Mercedes-Benz SLC300 Tires for Sale
Available 2020 Mercedes-Benz SLC300 tire options center on radial front and rear sizes from BFGoodrich, Nitto, and Pro-Trac. Depending on size, buyers can compare blackwall, raised white letter, and redline sidewalls, along with series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, NT555 G2, and Street Pro III.
SLC300 tire questions usually come down to staggered sizing, 17-inch versus 18-inch wheel fitment, front-versus-rear position, and the visual differences between available sidewall styles. These FAQs focus on selecting the correct size pair and checking the car before road use.
Tire Size & Fitment
What tire size fits a 2020 Mercedes-Benz SLC300?
The 2020 Mercedes-Benz SLC300 uses a staggered radial setup, so front and rear tire sizes are different. The front uses either 225/45R17 or 225/40R18, while the rear uses either 245/40R17 or 245/35R18, depending on which wheel package is on the car.
That means there is not one universal four-corner size for every SLC300. The correct starting point is to confirm whether the car has 17-inch or 18-inch wheels, then match the front and rear pair correctly instead of choosing by width alone.
What size rim does a 2020 Mercedes-Benz SLC300 use?
The 2020 Mercedes-Benz SLC300 uses either 17-inch or 18-inch rims, depending on the wheel package. The 225/45R17 and 245/40R17 sizes belong to the 17-inch setup, while the 225/40R18 and 245/35R18 sizes belong to the 18-inch setup.
Wheel diameter needs to be confirmed before choosing tires because the front and rear sizes are tied to the same package. Once diameter is verified, compare the actual wheel width as well, especially if the car has aftermarket wheels or a changed front-to-rear setup.
Do all 2020 Mercedes-Benz SLC300 sub-models use the same tire size?
Base and Final Edition SLC300 configurations follow the same fitment pattern, with two possible front sizes and two possible rear sizes based on wheel diameter. Both sub-models use 225-section fronts and 245-section rears, but the exact sizes change between the 17-inch and 18-inch packages.
The practical difference is not really the trim name but the actual wheels on the car and whether you are replacing a front or rear tire. Checking the mounted wheel diameter and the existing tire position prevents ordering a correct SLC300 size for the wrong corner.
Choosing the Right Tire
What should I consider when choosing a 2020 Mercedes-Benz SLC300 tire?
Start with the correct position and wheel package, because the 2020 Mercedes-Benz SLC300 uses different front and rear sizes and appears with either 17-inch or 18-inch wheels. After size is confirmed, compare radial tire series, sidewall style, rim-width compatibility, and any load figures that matter to your intended use.
A street-driven roadster may call for a different tire character than a car chosen mainly for weekend use or appearance. Matching the front and rear pair correctly, rather than selecting by brand or width alone, is what keeps the tire choice appropriate to the SLC300’s staggered layout.
What sidewall styles are available for 2020 Mercedes-Benz SLC300 tires?
Blackwall is the most common sidewall style across the available 2020 Mercedes-Benz SLC300 tire sizes. In 225/45R17, there are also Pro-Trac Street Pro III options with raised white letter and redline sidewalls, adding visual variety beyond a standard blackwall presentation.
Sidewall style does not change the need to stay with the correct front or rear size, and it should be considered after fitment is confirmed. For owners who want a stronger visual statement on 17-inch fronts, those alternate sidewall treatments offer an appearance choice without changing the tire size itself.
What brands offer tires for the 2020 Mercedes-Benz SLC300?
Available tire brands for the 2020 Mercedes-Benz SLC300 include BFGoodrich, Nitto, and Pro-Trac, depending on size. BFGoodrich appears across all four fitments, Nitto is offered in the front sizes, and Pro-Trac appears in 225/45R17 with Street Pro III sidewall variations.
Brand selection should come after confirming wheel diameter and whether the tire is for the front or rear. Once the correct size is settled, compare the series each brand offers, the sidewall presentation, and the wheel-width range so the tire choice matches both the car and the owner’s priorities.
Restoration & Appearance
Which tire should I choose for a period-style 2020 Mercedes-Benz SLC300?
A period-style approach for a 2020 Mercedes-Benz SLC300 still begins with the correct staggered size for the wheel package already on the car. Since this is a modern radial-fitment roadster, the visual decision is less about bias-ply versus radial and more about series character and sidewall presentation within the proper size.
Owners who want a cleaner contemporary look may prefer blackwall options, while 225/45R17 opens the door to raised white letter or redline styling. Appearance should always be secondary to correct front and rear sizing, and trim-specific originality questions are best checked against Mercedes-Benz documentation or marque resources.
How does tire construction affect the appearance of a restored 2020 Mercedes-Benz SLC300?
On a 2020 Mercedes-Benz SLC300, construction does not create a bias-ply-versus-radial decision because the primary fitments are radial throughout. Appearance is shaped more by tire series and sidewall treatment, especially where blackwall, raised white letter, or redline choices are available in the correct size.
That makes visual selection more subtle than on an older collector car, but it still matters to the finished look. Keeping the correct staggered front and rear sizes preserves the car’s intended stance, while sidewall style lets the owner lean toward a restrained factory-inspired look or a more expressive presentation.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2020 Mercedes-Benz SLC300?
Yes, modifications can affect tire fitment on a 2020 Mercedes-Benz SLC300, especially because the car uses staggered front and rear sizes tied to either 17-inch or 18-inch wheels. Aftermarket wheels, suspension changes, altered ride height, or spacer use can all change clearance and wheel-width compatibility.
A tire that matches the original size code may still need closer checking if the car no longer has its original wheel setup. Measuring actual wheel diameter and width, then checking clearance at full steering lock and through suspension travel, helps avoid fitment surprises on a modified roadster.
What should I inspect before driving a 2020 Mercedes-Benz SLC300 on new tires?
Before driving a 2020 Mercedes-Benz SLC300 on new tires, confirm that the correct front and rear sizes were mounted for the car’s 17-inch or 18-inch wheel package. Then inspect inflation pressure, valve stems, wheel condition, lug torque, and basic clearance around fenders, suspension parts, and steering components.
A short test drive should be followed by another visual check for any rubbing, unusual wear pattern, or pressure loss. On a staggered setup, it is especially important to make sure the wider rear tire and narrower front tire are installed in their proper positions.
How often should tires on a 2020 Mercedes-Benz SLC300 be inspected?
Tires on a 2020 Mercedes-Benz SLC300 should be inspected regularly, not just when tread looks low. A visual check for air loss, cuts, bulges, uneven wear, and sidewall damage is a smart habit before longer drives and at routine service intervals, especially on a low-mileage or seasonally driven roadster.
Roadsters often spend time parked, so age and condition matter as much as mileage. Keeping an eye on inflation pressure and wear at all four corners helps catch problems early, and staggered sizing makes it important to inspect each position individually rather than assuming all four tires age the same way.
