The 2019 Mercedes-Benz S63 AMG blends full-size S-Class luxury with the kind of power and chassis tuning expected from an AMG flagship. Whether in sedan, coupe, or cabriolet form, it is a high-performance grand touring car that depends on a staggered tire setup rather than one uniform size. Front fitment uses 255/40R20 and rear fitment uses 285/35R20, both in radial construction on 20-inch wheels. That makes the real choice less about finding a single size and more about matching the correct front and rear sizes, then comparing available brands, tire series, and sidewall treatments. Before selecting tires, confirm the vehicle's body style and axle position, especially if wheels or suspension have been changed.
Which Tire Size Is Right for The 2019 Mercedes-Benz S63 AMG
The 2019 Mercedes-Benz S63 AMG uses two primary tire sizes, and the difference is by axle position rather than by a completely different wheel diameter. Both sizes are radial tires for 20-inch rims, with 255/40R20 used at the front and 285/35R20 at the rear. The first step is confirming whether you are replacing front tires, rear tires, or a full staggered set so the correct size goes in the correct position.
Fit(s): 4Matic Coupe & Cabriolet Front and 4Matic Sedan Front
Construction: Radial|Rim: 20 in
255/40R20 is a metric radial size in which 255 identifies the nominal section width in millimeters, 40 is the aspect ratio, R designates radial construction, and 20 is the rim diameter in inches. On the 2019 Mercedes-Benz S63 AMG, this size serves the front position in the staggered setup, so it should be selected with the vehicle's front axle role in mind. Available choices in this size center on a blackwall BFGoodrich g-Force Phenom T/A. It is the right size to evaluate when replacing worn front tires or restoring the proper front-to-rear sizing relationship on the car.
Fit(s): 4Matic Coupe & Cabriolet Rear and 4Matic Sedan Rear
Construction: Radial|Rim: 20 in
285/35R20 is a metric radial size with a 285-millimeter nominal section width, a 35-series profile, radial construction, and a 20-inch rim diameter. On the 2019 Mercedes-Benz S63 AMG, this size is used at the rear, where the car's staggered fitment calls for a wider tire than the front. Product choices in this size include BFGoodrich, Nitto, and Pro-Trac options, with blackwall, raised white letter, and redline sidewall treatments represented across different tire series. This is the size to compare when selecting rear tires that suit the car's existing wheel setup and intended presentation.
Fitment stays consistent in size layout across the covered S63 AMG body styles, with the same front and rear sizing pattern used throughout. Checking the exact sub-model still matters so the correct axle position is matched to the correct tire size during replacement.
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2019 Mercedes-Benz S63 AMG 4Matic Coupe & Cabriolet Front
The 2019 Mercedes-Benz S63 AMG 4Matic Coupe & Cabriolet Front uses the front fitment of the staggered setup, with radial construction on a 20-inch wheel. Tire selection here is about choosing the correct front size and confirming that any wheel changes have not altered the intended front axle fitment.
2019 Mercedes-Benz S63 AMG 4Matic Coupe & Cabriolet Rear
The 2019 Mercedes-Benz S63 AMG 4Matic Coupe & Cabriolet Rear uses the wider rear portion of the staggered radial setup on a 20-inch wheel. That makes rear-tire selection the place to compare brand, series, and sidewall appearance while still keeping the correct rear sizing relationship.
The 2019 Mercedes-Benz S63 AMG 4Matic Sedan Front follows the same front-axle tire arrangement used across the covered S63 AMG configurations. Choosing tires for this position means staying with the correct front size and checking wheel width and overall setup if the sedan no longer wears its original wheel package.
The 2019 Mercedes-Benz S63 AMG 4Matic Sedan Rear uses the same wider rear radial fitment found on the other covered S63 AMG configurations. This is the axle position where buyers can compare the broader product variety while confirming the tire remains appropriate for the car's rear wheel and clearance setup.
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 S63 AMG Tires for Sale
Available 2019 Mercedes-Benz S63 AMG tires center on radial 20-inch fitments from BFGoodrich, Nitto, and Pro-Trac. Buyers can compare tire series and sidewall presentation most noticeably at the rear, where blackwall, raised white letter, and redline choices are available in 285/35R20.
Owners of a 2019 Mercedes-Benz S63 AMG usually need answers about staggered front and rear sizing, 20-inch rim fitment, available radial tire choices, sidewall appearance, and what to inspect before road use on a high-performance luxury car.
Tire Size & Fitment
What tire size fits a 2019 Mercedes-Benz S63 AMG?
The 2019 Mercedes-Benz S63 AMG uses a staggered tire setup with 255/40R20 at the front and 285/35R20 at the rear. Both are radial sizes for 20-inch wheels, and that front-to-rear difference applies across the covered sedan, coupe, and cabriolet configurations.
That means the first step is identifying which axle needs replacement. A front tire should not be selected from the rear size, and a rear tire should not be selected from the front size. On a modified car, it is also smart to confirm the actual wheel setup before ordering, since aftermarket wheels can change what is currently mounted.
What size rim does a 2019 Mercedes-Benz S63 AMG use?
The primary tire fitments for the 2019 Mercedes-Benz S63 AMG use a 20-inch rim diameter. Both 255/40R20 and 285/35R20 are built around that same 20-inch wheel diameter, even though the front and rear tire widths and profiles are different.
Rim diameter is only one part of fitment, so wheel width still matters when comparing specific tire options. The car's staggered setup also means front and rear wheels may differ in width even though both are 20-inch wheels. Checking the wheel markings or measuring the installed wheels helps avoid ordering the right diameter in the wrong overall configuration.
Do all 2019 Mercedes-Benz S63 AMG sub-models use the same tire size?
The covered 2019 Mercedes-Benz S63 AMG sub-models share the same sizing pattern rather than one single tire size. Front positions use 255/40R20 and rear positions use 285/35R20 on sedan, coupe, and cabriolet applications, so the layout is consistent across the range.
The practical issue is not body style so much as axle position. Replacing two tires requires confirming whether the work is being done at the front or rear, and replacing a full set means preserving the staggered arrangement. If the car has been fitted with non-original wheels, verify current sizes on the vehicle before choosing replacements.
Choosing the Right Tire
What should I consider when choosing a 2019 Mercedes-Benz S63 AMG tire?
Start with the correct axle-specific size: 255/40R20 for the front and 285/35R20 for the rear. From there, compare radial construction details, wheel-width compatibility where stated, and the overall character of the tire series available in the size you need.
Appearance and intended use both matter on an S63 AMG. Some buyers simply want a clean blackwall presentation, while others may want a more distinctive rear-tire look such as raised white letter or redline styling. It also helps to compare load figures where given and to make sure the tire suits the wheel that is actually on the car.
What sidewall styles are available for 2019 Mercedes-Benz S63 AMG tires?
Sidewall style choice is most visible in the 285/35R20 rear size. Blackwall options are available, and rear-tire selections also include raised white letter and redline presentations. The 255/40R20 front fitment is represented here by a blackwall tire.
That means a buyer replacing rear tires has the widest appearance choice, while front replacement is more straightforward. On a car where visual balance matters, sidewall treatment should be considered as part of the full front-and-rear presentation rather than as a rear-only decision. Matching style across the set often matters as much as matching size.
What brands offer tires for the 2019 Mercedes-Benz S63 AMG?
Available tires for the 2019 Mercedes-Benz S63 AMG include BFGoodrich, Nitto, and Pro-Trac. BFGoodrich appears in both the front and rear fitments, while Nitto and Pro-Trac are represented in the 285/35R20 rear size.
Brand alone should not be the only deciding factor. It is more useful to compare the exact tire series, sidewall style, and wheel-compatibility details within the correct front or rear size. Since the rear fitment has the broader mix of products, that is usually where owners will spend more time weighing appearance and specification differences.
Restoration & Appearance
Which tire should I choose for a period-style 2019 Mercedes-Benz S63 AMG?
A period-style choice for a 2019 Mercedes-Benz S63 AMG still begins with keeping the correct staggered sizing layout: 255/40R20 in front and 285/35R20 in the rear. Because this is a modern AMG performance sedan or grand touring coupe/cabriolet, radial construction is already part of the authentic visual and functional character.
Appearance then comes down to how understated or expressive the finished look should be. A blackwall tire keeps the presentation closest to a contemporary OEM-style visual theme, while rear redline or raised white letter options create a more customized look. Buyers focused on originality should compare their tire choice to vehicle-specific historical references before making a final decision.
How does tire construction affect the appearance of a restored 2019 Mercedes-Benz S63 AMG?
On a 2019 Mercedes-Benz S63 AMG, tire construction is less about bias-ply versus radial history and more about selecting a modern radial that visually suits the car. The primary fitment is radial in both front and rear sizes, which aligns with the vehicle's modern high-performance luxury character.
Visual differences are more likely to come from sidewall treatment and overall tire styling than from a construction change. A blackwall keeps the look restrained, while redline or raised white letter rear options make a stronger statement. For a careful restoration-oriented presentation, preserving the correct staggered stance is usually more important than pursuing novelty in sidewall style.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 Mercedes-Benz S63 AMG?
Yes, modifications can affect tire fitment on a 2019 Mercedes-Benz S63 AMG even when the tire sizes remain close to the original staggered setup. Aftermarket wheels, altered wheel widths, suspension changes, and ride-height adjustments can all influence how 255/40R20 front and 285/35R20 rear tires sit in the car.
Clearance should be checked at full steering lock in front and through suspension travel at both ends. The same 20-inch rim diameter does not guarantee the same wheel width or offset as the original setup. On a modified car, verify the actual wheel specifications before replacing tires so the new set matches the present configuration rather than an assumed one.
What should I inspect before driving a 2019 Mercedes-Benz S63 AMG on new tires?
Before road use, inspect tire pressure, wheel fastener torque, tread and sidewall condition, and basic clearance around the front and rear tires. On a staggered car like the 2019 Mercedes-Benz S63 AMG, it is also important to confirm that the correct sizes were installed in the correct positions.
A short, careful drive can reveal vibration, rubbing, or alignment-related pull before the car is used at highway speed. It also helps to recheck pressures after the first drive and inspect for any sign of contact at the inner fender or suspension. High-performance luxury cars place real demands on tires, so small fitment issues should be addressed early.
How often should tires on a 2019 Mercedes-Benz S63 AMG be inspected?
Tires on a 2019 Mercedes-Benz S63 AMG should be inspected regularly, not just when tread appears worn. Frequent visual checks for cuts, bulges, uneven wear, cracking, or air loss are especially important on a powerful vehicle with staggered front and rear sizing.
Monthly pressure checks are a sensible baseline, and closer inspection is worthwhile before longer drives or after the car has been stored. Uneven wear can point to alignment or suspension issues that become more noticeable on low-profile 20-inch fitments. Paying attention to condition as well as age helps keep the car's ride, handling, and appearance where they should be.
