The 2019 Mercedes-Benz C63 AMG S sits at the sharp end of the modern C-Class range, blending compact luxury-car proportions with serious AMG performance and a wide-tire stance to match. On this exact model, tire fitment is not a one-size decision, because front and rear sizes differ and wheel diameter can vary by configuration. Primary fitments are modern metric radial sizes, including staggered 19-inch setups and a 20-inch rear option on certain Cabriolet and Coupe rear applications. That makes tire selection less about vintage-style construction and more about confirming the exact sub-model position, then choosing the right brand, series, and sidewall treatment for the way the car is equipped and driven.
Which Tire Size Is Right for The 2019 Mercedes-Benz C63 AMG S
Five primary tire sizes apply to the 2019 Mercedes-Benz C63 AMG S, and the correct choice depends first on identifying the exact body style and whether you are selecting a front or rear tire. Fitment also spans both 19-inch and 20-inch rear applications, so confirming wheel diameter is just as important as confirming the sub-model before comparing tire options.
255/35R19 is a modern metric radial size in which 255 identifies the nominal section width in millimeters, 35 is the aspect ratio, R denotes radial construction, and 19 is the wheel diameter in inches. On the 2019 Mercedes-Benz C63 AMG S, this size serves as a front fitment on the Cabriolet and Coupe. Available choices center on BFGoodrich in several g-Force series, all in Blackwall form, with differences in tire series, load specification, and rim-width suitability. This size is the one to evaluate when matching the front axle setup on those two body styles.
285/30R19 is a wide, low-profile metric radial that uses a 285-millimeter nominal section width, a 30-series profile, and a 19-inch rim diameter. On the 2019 Mercedes-Benz C63 AMG S, it appears as a rear fitment for Cabriolet and Coupe applications using the 19-inch rear wheel setup. It represents the broader rear half of the staggered arrangement, so selection should focus on matching the rear wheel diameter and overall setup rather than treating it as a universal fitment across the whole car. This is the size to confirm when the car carries 19-inch rear wheels.
285/30R20 follows the same modern metric radial format, with 285 as nominal width in millimeters, a 30-series profile, radial construction, and a 20-inch wheel diameter. For the 2019 Mercedes-Benz C63 AMG S, this size is used at the rear of certain Cabriolet and Coupe configurations equipped with 20-inch rear wheels. Product choice includes Blackwall, raised white letter, and Redline presentations from Nitto and Pro-Trac, giving this rear application more visible sidewall variety than the 19-inch fronts. It should be considered only after confirming that the car actually wears the 20-inch rear wheel package.
245/35R19 is a modern metric radial size with a 245-millimeter nominal width, a 35-series aspect ratio, and a 19-inch rim diameter. On the 2019 Mercedes-Benz C63 AMG S, this size is used on the front of the Sedan, making it distinct from the wider front fitment used on the Coupe and Cabriolet. BFGoodrich and Nitto offerings are available in Blackwall form across g-Force and NT555 G2 series, with meaningful differences in rim-width range and load specification on certain products. This is the front size to match when selecting tires for the Sedan's staggered setup.
265/35R19 is a metric radial size that combines a 265-millimeter nominal section width with a 35-series profile on a 19-inch wheel. On the 2019 Mercedes-Benz C63 AMG S, it serves as the rear tire size for the Sedan and completes that model's staggered front-to-rear fitment. Available Blackwall choices from BFGoodrich and Nitto span several performance-oriented series, and some products also include load and rim-width details that can help narrow the field. This is the rear size to verify when replacing Sedan tires as a matched axle pair rather than mixing rear fitments from other body styles.
Sub-model fitment on the 2019 Mercedes-Benz C63 AMG S varies by body style and by axle position, so the first step is confirming whether the car is a Cabriolet, Coupe, or Sedan and whether the tire is for the front or rear. Rear wheel diameter also matters, because some Cabriolet and Coupe rear applications use either a 19-inch or 20-inch size.
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2019 Mercedes-Benz C63 AMG S Cabriolet Front
The Cabriolet front application uses 255/35R19 radial tires, placing it on the wider of the two front fitments used across this model range. Tire selection here is mainly about matching the correct front size, then comparing Blackwall performance-oriented choices by brand and series.
The Cabriolet rear uses a 285-section radial tire, but the correct size depends on whether the car has a 19-inch or 20-inch rear wheel. Rear tire choice starts with wheel-diameter confirmation, then moves to sidewall style and brand differences where the 20-inch fitment offers the most visual variety.
The Coupe front application also uses 255/35R19 radials, matching the Cabriolet front fitment rather than the Sedan front size. That keeps the decision focused on comparing available tire series and product specifications within the proper front size.
The Coupe rear shares the same rear fitment pattern as the Cabriolet, using either 285/30R19 or 285/30R20 depending on wheel setup. Confirming the actual rear rim diameter is essential before choosing between the available Blackwall, Redline, or raised white letter options tied to the 20-inch application.
The Sedan front uses 245/35R19 radial tires, which sets it apart from the Cabriolet and Coupe front size. Tire selection should stay centered on the Sedan’s front axle fitment, then narrow by brand, tire series, and rim-width compatibility where that detail is available.
The Sedan rear uses 265/35R19 radials, creating its own staggered 19-inch setup with a narrower rear than the Cabriolet and Coupe rear fitments. That makes it important to keep Sedan rear replacement decisions separate from the wider 285-section rear sizes used on the other body styles.
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 2019 Mercedes-Benz C63 AMG S Tires for Sale
Available 2019 Mercedes-Benz C63 AMG S tires center on radial performance offerings from BFGoodrich, Nitto, and Pro-Trac. Depending on size, the product grid includes several g-Force series, Nitto NT555 G2, and Street Pro III choices, with Blackwall, Redline, and raised white letter sidewall treatments in the 20-inch rear fitment.
For the 2019 Mercedes-Benz C63 AMG S, the biggest questions usually involve staggered sizing, front-versus-rear fitment, 19-inch versus 20-inch rear wheels, and how to compare the available radial tire options by series, sidewall style, and intended use.
Tire Size & Fitment
What tire size fits a 2019 Mercedes-Benz C63 AMG S?
The 2019 Mercedes-Benz C63 AMG S uses several radial tire sizes rather than one universal fitment. Cabriolet and Coupe front applications use 255/35R19, their rear applications use either 285/30R19 or 285/30R20, Sedan front uses 245/35R19, and Sedan rear uses 265/35R19.
That means the correct tire depends on both body style and axle position. A front tire from one version should not be assumed to suit the rear, and the Cabriolet or Coupe rear setup requires special attention because the wheel diameter may be either 19 or 20 inches.
What size rim does a 2019 Mercedes-Benz C63 AMG S use?
The 2019 Mercedes-Benz C63 AMG S uses both 19-inch and 20-inch rim diameters, depending on the exact application. Front fitments are 19-inch, Sedan rear is also 19-inch, and certain Cabriolet and Coupe rear applications step up to a 20-inch rim with 285/30R20 tires.
Wheel diameter is one of the first things to confirm before replacing tires on this model. Reading the wheel itself, checking the current tire size, and verifying whether the car retains its original wheel setup can prevent choosing a rear tire that matches width but not rim diameter.
Why does the 2019 Mercedes-Benz C63 AMG S have more than one tire size?
Multiple tire sizes appear on the 2019 Mercedes-Benz C63 AMG S because fitment changes by body style, front-versus-rear position, and wheel package. The car uses staggered sizing, so the front and rear tires are intentionally different, and Cabriolet and Coupe rear fitments can use either 19-inch or 20-inch wheels.
That layout gives the car a more specialized fitment pattern than a square-tire setup. Tire replacement should start with the exact sub-model and axle location, then move to wheel-diameter confirmation so the selected tire matches the actual wheel and overall configuration already on the vehicle.
Choosing the Right Tire
What should I consider when choosing a 255/35R19 tire for a 2019 Mercedes-Benz C63 AMG S?
A 255/35R19 tire is the front fitment for 2019 Mercedes-Benz C63 AMG S Cabriolet and Coupe models. The main selection points are keeping the correct size and radial construction, then comparing available BFGoodrich choices by tire series, load specification where shown, and rim-width range where that detail is included.
Appearance is straightforward here because the available options are Blackwall tires, so the decision leans more toward product character than sidewall style. Matching the tire to the actual front wheel width and replacing front tires as a properly matched pair are sensible steps on a high-performance staggered setup.
What sidewall styles are available for 2019 Mercedes-Benz C63 AMG S tires?
Sidewall style depends on the tire size chosen for the 2019 Mercedes-Benz C63 AMG S. Blackwall is the common presentation across the 19-inch front and rear sizes, while the 285/30R20 rear application adds visible style choices that include Blackwall, Redline, and raised white letter sidewalls.
That makes the 20-inch rear fitment the main place where appearance becomes part of the buying decision. Sidewall style should still come after confirming the correct rear wheel diameter, because the visual options only matter once the tire size matches the wheel and rear application on the car.
What brands offer tires for the 2019 Mercedes-Benz C63 AMG S?
Tires for the 2019 Mercedes-Benz C63 AMG S are available from BFGoodrich, Nitto, and Pro-Trac across the applicable sizes on this page. BFGoodrich appears across several 19-inch fitments, Nitto covers both 19-inch and 20-inch applications, and Pro-Trac appears in the 285/30R20 rear size.
Brand choice should be narrowed only after the exact size, axle position, and wheel diameter are confirmed. Once that is settled, it becomes easier to compare each brand’s available tire series, sidewall presentation, and any product details such as rim-width range or stated load specification.
Restoration & Appearance
Which tire should I choose for a period-style 2019 Mercedes-Benz C63 AMG S?
A period-style approach on a 2019 Mercedes-Benz C63 AMG S usually means staying with the correct original fitment pattern for the body style and axle position rather than changing the sizing concept. That keeps the car’s staggered modern performance stance intact, whether it uses the 19-inch rear setup or the optional 20-inch rear application.
Appearance then comes down to choosing among the sidewall treatments actually offered in the correct size. Blackwall keeps the most understated look, while the 285/30R20 rear size opens the door to more visible Redline or raised white letter styling if that presentation suits the car’s overall theme.
How does tire construction affect the appearance of a restored 2019 Mercedes-Benz C63 AMG S?
Tire construction is simpler on the 2019 Mercedes-Benz C63 AMG S than on older collector cars because the primary fitments are all radial. The visible difference is less about bias-ply versus radial and more about maintaining the correct low-profile modern metric sizing and staggered front-to-rear proportions.
That means appearance is shaped mostly by size accuracy, wheel diameter, and sidewall treatment rather than by switching construction types. A car that has been cosmetically restored or carefully detailed will usually look most coherent when the tires preserve the intended front and rear visual balance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 Mercedes-Benz C63 AMG S?
Yes, modifications can affect tire fitment on a 2019 Mercedes-Benz C63 AMG S, especially because the car already uses staggered sizing and, in some versions, different rear wheel diameters. Aftermarket wheels, altered offsets, suspension lowering, and body or brake changes can all influence clearance and wheel compatibility.
A car with changes from stock should be checked carefully before ordering replacement tires. Confirm the current wheel diameter and width, compare the actual size mounted on the car, and inspect for clearance at full steering lock and suspension movement rather than relying only on the model name.
What should I inspect before driving a 2019 Mercedes-Benz C63 AMG S on new tires?
Before driving a 2019 Mercedes-Benz C63 AMG S on new tires, inspect the wheels for damage, confirm that each tire matches the correct front or rear position, and verify that all four tires are seated and inflated properly. On a staggered setup, axle placement matters just as much as the size itself.
A short follow-up check after the first miles is also worthwhile. Recheck pressure, look for any sign of rubbing, and make sure the rear wheel diameter and tire size combination is correct on Cabriolet or Coupe models where 19-inch and 20-inch rear fitments are both possible.
What should I check before a longer drive in a 2019 Mercedes-Benz C63 AMG S?
Before a longer drive, check tire pressure, tread condition, and any signs of sidewall damage such as cuts, bulges, or cracking. On a 2019 Mercedes-Benz C63 AMG S, it is also smart to confirm that the front and rear tires remain in the correct staggered positions and that no mismatched rear diameter has been installed.
Longer trips put more importance on consistency across the axle pair, especially on a performance-oriented car. A quick inspection of wheel condition, valve stems, and any unusual wear pattern can catch alignment or clearance problems early, before they become more serious on the road.
