The 2019 Mercedes-Benz SL63 AMG blends the long-running SL formula of open-top grand touring with modern AMG power and a much more serious performance edge. It is a car that asks as much from its tires as it does from its brakes, chassis, and suspension, especially because its fitment is staggered between front and rear. For this SL63 AMG, the front uses 255/35R19, while the rear uses either 285/30R19 or 285/30R20 radial sizes depending on wheel setup. Available choices include blackwall, raised white letter, and redline presentations across several performance-oriented tire lines. The right decision starts with confirming whether the car retains its 19-inch rear wheel or has the 20-inch rear arrangement.
Which Tire Size Is Right for The 2019 Mercedes-Benz SL63 AMG
The 2019 Mercedes-Benz SL63 AMG uses three primary tire sizes, and they are not interchangeable across every position on the car. Front fitment is 255/35R19, while rear fitment depends on whether the car uses a 19-inch or 20-inch rear wheel. Before choosing a tire, confirm both the tire position and the actual rear rim diameter, since that determines whether 285/30R19 or 285/30R20 applies.
In 255/35R19, 255 is the section width in millimeters, 35 is the aspect ratio, R identifies radial construction, and 19 is the wheel diameter in inches. On the 2019 Mercedes-Benz SL63 AMG, this is the front tire size and it suits the car’s modern high-performance, low-profile setup. Available choices are centered around BFGoodrich blackwall radials in g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A series. This size is the right place to focus when replacing front tires and matching the car’s steering response and wheel fitment.
In 285/30R19, 285 is the section width in millimeters, 30 is the aspect ratio, R denotes radial construction, and 19 is the rim diameter in inches. This size is used at the rear on SL63 AMG configurations that keep a 19-inch rear wheel, making it a position-specific fitment rather than a universal size for the car. Its low-profile metric radial format reflects the SL63 AMG’s performance-oriented rear setup and should be matched carefully to the wheel already on the vehicle. Choose this size only after confirming that the rear wheel is in fact 19 inches.
In 285/30R20, 285 indicates section width in millimeters, 30 is the aspect ratio, R means radial construction, and 20 identifies a 20-inch wheel. This is the rear tire size for SL63 AMG setups using a 20-inch rear rim, so wheel diameter is the key distinction from the 285/30R19 rear fitment. Available products include blackwall and appearance-oriented alternatives such as raised white letter and redline in the Nitto NT555 G2 and Pro-Trac Street Pro III lines. This size is the correct path when the car has a 20-inch rear wheel and you want to compare rear tire style as well as brand and series.
Sub-model fitment on the 2019 Mercedes-Benz SL63 AMG is straightforward in name but split by axle position. The front uses one size, while the rear fitment changes with rear wheel diameter, so identifying position and confirming the rear wheel matters before selecting tires.
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2019 Mercedes-Benz SL63 AMG Base Front
The Base Front position uses a dedicated 255/35R19 radial tire, separate from the wider rear fitments. That means front replacement is mainly about choosing the right performance tire within that size and keeping wheel compatibility aligned with the car’s existing front setup.
The Base Rear position uses a wider radial tire, but the exact size depends on whether the rear wheel is 19 inches or 20 inches. Rear tire selection starts with wheel confirmation, then moves to comparing available product styles and series within the correct rear size.
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 SL63 AMG Tires for Sale
Available 2019 Mercedes-Benz SL63 AMG tire choices focus on radial performance tires across 255/35R19 and 285/30R20 sizes. BFGoodrich, Nitto, and Pro-Trac options bring differences in tire series and sidewall presentation, including blackwall, raised white letter, and redline styles.
SL63 AMG tire questions usually come down to staggered sizing, 19-inch versus 20-inch rear wheel fitment, radial tire selection, and the visual differences between available sidewall treatments. The answers below focus on those exact ownership and fitment decisions.
Tire Size & Fitment
What tire size fits a 2019 Mercedes-Benz SL63 AMG?
The 2019 Mercedes-Benz SL63 AMG uses a staggered radial tire setup. The front size is 255/35R19, while the rear uses either 285/30R19 or 285/30R20 depending on the rear wheel arrangement on the car.
That makes this a position-specific fitment rather than a one-size setup. The most important first step is confirming whether you are replacing a front or rear tire, then verifying the actual rear wheel diameter before selecting between the two rear sizes.
What size rim does a 2019 Mercedes-Benz SL63 AMG use?
The 2019 Mercedes-Benz SL63 AMG uses 19-inch rims at the front with its 255/35R19 tire size. Rear fitment can be either a 19-inch rim with 285/30R19 or a 20-inch rim with 285/30R20.
Because the rear wheel diameter can differ, the wheel itself needs to be confirmed before ordering a rear tire. Reading the existing tire sidewall and checking the wheel marking are both useful, especially on cars that may have had wheel changes during ownership.
Why does the 2019 Mercedes-Benz SL63 AMG have more than one tire size?
The SL63 AMG uses more than one tire size because it has a staggered layout, with a narrower front tire and a wider rear tire. Rear fitment also appears in both 19-inch and 20-inch versions, which creates two possible rear sizes.
That means tire choice is tied to axle position and wheel diameter, not just the model name. Matching the exact size already used at each end of the car helps preserve proper fitment, while mixed or modified wheel setups should be checked carefully before replacement.
Choosing the Right Tire
What should I consider when choosing a 255/35R19 tire for a 2019 Mercedes-Benz SL63 AMG?
Start with the correct front size, which is 255/35R19, and confirm that the tire is intended for a 19-inch wheel. In this size, available choices center on BFGoodrich radial performance tires in several g-Force series, all offered with a blackwall appearance.
Selection usually comes down to matching the car’s intended use and checking wheel compatibility. Rim-width range, load figures where stated, and the tire’s overall character are all worth comparing so the new front tires suit both the wheel and the way the SL63 AMG is driven.
What sidewall styles are available for 2019 Mercedes-Benz SL63 AMG tires?
Sidewall style depends on the tire size you are shopping. The available products for this SL63 AMG include blackwall tires, and in 285/30R20 there are also raised white letter and redline options.
That gives the car owner a choice between a more understated modern look and a more expressive sidewall presentation. Appearance should still come after correct fitment, so confirm the exact rear wheel diameter first before choosing a sidewall style for the back of the car.
What brands offer tires for the 2019 Mercedes-Benz SL63 AMG?
Available tires for the 2019 Mercedes-Benz SL63 AMG come from BFGoodrich, Nitto, and Pro-Trac. BFGoodrich appears in the 255/35R19 front size, while Nitto and Pro-Trac are available in 285/30R20 for rear applications using a 20-inch wheel.
Brand choice should be considered alongside the exact size, wheel diameter, sidewall preference, and tire series. Since the SL63 AMG uses a staggered setup, the right brand for the front position may not be the same brand or product line used at the rear.
Restoration & Appearance
How does tire construction affect the appearance of a restored 2019 Mercedes-Benz SL63 AMG?
On a 2019 Mercedes-Benz SL63 AMG, construction is straightforward because the primary fitments are radial tires. The visual differences come less from bias-ply versus radial choice and more from the tire’s sidewall treatment, profile, and overall design language.
That means appearance decisions are mostly about whether you want a contemporary blackwall presentation or a more distinctive rear sidewall style such as raised white letter or redline where available. Keeping the correct low-profile sizing is also important, since it strongly shapes how the car sits and looks.
Does correct tire fitment matter for a 2019 Mercedes-Benz SL63 AMG restoration?
Correct tire fitment matters on the 2019 Mercedes-Benz SL63 AMG because the car uses a staggered setup and low-profile metric radial sizes. The front 255/35R19 and the two possible rear sizes create a very specific visual and mechanical relationship between wheel and tire.
Using the wrong rear diameter or mixing unmatched profiles can change the car’s stance and upset the intended look. A restoration-minded owner should confirm the wheel setup already on the car and use that as the starting point before deciding on brand, series, or sidewall appearance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 Mercedes-Benz SL63 AMG?
Yes, modifications can affect tire fitment on a 2019 Mercedes-Benz SL63 AMG. Aftermarket wheels, suspension changes, altered ride height, or body modifications can all change the space available for a 255/35R19 front tire or either of the wider rear sizes.
Even when the tire size stays the same, wheel width and offset can influence clearance at the fender, suspension, and steering components. Any SL63 AMG with non-original wheels or chassis changes deserves a careful check before replacement tires are chosen by size alone.
What should I inspect before driving a 2019 Mercedes-Benz SL63 AMG on new tires?
Inspect the wheels for the correct diameter and condition, verify that front and rear sizes are mounted in the proper positions, and check that each tire is seated and inflated appropriately. It also helps to look for any rubbing marks, uneven wear, or signs of alignment issues.
A high-performance roadster puts real demand on its tires, so the basics matter. Steering should turn freely, suspension components should be in sound condition, and the tires should be checked again after initial driving to make sure there is no air loss or unexpected clearance problem.
What should I check before a longer drive in a 2019 Mercedes-Benz SL63 AMG?
Before a longer drive, confirm that the SL63 AMG is wearing the correct staggered sizes for its wheel setup and that all four tires are in good condition. Tread depth, air pressure, sidewall condition, and any signs of cuts, bulges, or cracking deserve a close look.
Longer trips also make it worthwhile to inspect the spare situation if applicable, wheel fastener security, and the general condition of suspension and steering components. On a car with low-profile tires, even small fitment or pressure issues can become much more noticeable once miles begin to add up.
