The 2019 Mercedes-Benz AMG GT 63 blends four-door grand touring comfort with the kind of pace and presence expected from AMG’s top performance cars. It is a modern, high-output platform where wheel and tire fitment play a major role in stance, response, and overall balance. Tire selection for the 2019 Mercedes-Benz AMG GT 63 centers on staggered radial sizes, with different front and rear fitments and three distinct rim diameters depending on wheel setup. That makes exact size matching especially important, and product choice becomes a matter of confirming the correct axle position, wheel diameter, and intended road use rather than simply picking a generic replacement.
Which Tire Size Is Right for The 2019 Mercedes-Benz AMG GT 63
The 2019 Mercedes-Benz AMG GT 63 uses six primary tire sizes, and the right one depends first on axle position and wheel diameter. Front and rear fitments are different, and those fitments span 19-inch, 20-inch, and 21-inch wheels, so the first step is confirming whether the car is using the 19, 20, or 21-inch setup before choosing a tire.
255/45R19 is a metric radial size with a 255-millimeter nominal section width, a 45-series profile, radial construction, and a 19-inch rim diameter. On the 2019 Mercedes-Benz AMG GT 63, this is a front fitment tied to the 19-inch wheel setup, so it should be treated as part of a staggered front-and-rear combination rather than a stand-alone size choice. Its role is to preserve the intended relationship between front tire width and the matching rear size. Buyers should confirm the actual wheel diameter on the car and avoid mixing this size with rear fitments from a different wheel package.
265/40R20 follows the same modern metric radial format, using a 265-millimeter section width, 40-series profile, and 20-inch rim diameter. For the 2019 Mercedes-Benz AMG GT 63, this size belongs on the front axle with the 20-inch wheel package, making it part of the vehicle’s staggered radial fitment. The practical decision here is less about construction and more about matching the correct front size to the corresponding rear tire on the same wheel diameter. Checking the wheel setup first helps prevent mismatched diameter pairs or unintended handling changes.
275/35R21 is a metric radial tire size that indicates a 275-millimeter nominal width, a 35-series aspect ratio, and fitment on a 21-inch rim. On this 2019 Mercedes-Benz AMG GT 63 application, it serves as the front tire size for the 21-inch wheel combination, again working with a wider rear tire in a staggered arrangement. The lower-profile format reflects the larger-diameter wheel setup, so size accuracy matters at both the front and rear axle. It is worth verifying that the car is actually on the 21-inch package before selecting this fitment.
285/40R19 is a metric radial size with a 285-millimeter nominal section width, 40-series profile, and 19-inch rim diameter. On the 2019 Mercedes-Benz AMG GT 63, this is the rear companion to the 255/45R19 front fitment, so it belongs to the 19-inch staggered setup rather than to every configuration of the car. Its wider section reflects the rear axle’s role in the vehicle’s overall traction and balance. Choosing this size means confirming both rear position and 19-inch wheel diameter instead of assuming any AMG GT 63 rear tire will interchange.
295/35R20 is a modern metric radial size that combines a 295-millimeter section width with a 35-series profile on a 20-inch rim. It is the rear fitment for the AMG GT 63’s 20-inch setup, paired with a 265/40R20 front tire, and available product choice in this size includes a Nitto NT555 G2 in Blackwall form. That means buyers looking at this rear size may also compare tire series and brand character, not just dimensions alone. The key is keeping it matched to the correct front size and verifying that the car is using the 20-inch wheel package.
315/30R21 is a wide, low-profile metric radial tire size with a 315-millimeter nominal width, a 30-series profile, and a 21-inch rim diameter. For the 2019 Mercedes-Benz AMG GT 63, it is the rear fitment used with the 21-inch staggered wheel and tire package, paired to a 275/35R21 front. That combination makes wheel-diameter confirmation especially important, since the size is specific to the largest factory-style fitment group shown here. Buyers should also confirm rear-axle placement and overall clearance any time the car has aftermarket wheels or suspension changes.
Fitment on the 2019 Mercedes-Benz AMG GT 63 is straightforward once axle position is identified, but front and rear tires are not the same. Checking the exact front or rear application matters because each wheel package uses a staggered radial combination across 19-inch, 20-inch, or 21-inch rims.
1
2019 Mercedes-Benz AMG GT 63 Base Front
The Base Front position uses one of three radial sizes depending on whether the car is equipped with 19-inch, 20-inch, or 21-inch wheels. Tire selection here means confirming the actual front wheel diameter and keeping the front fitment matched to the corresponding rear size from the same staggered setup.
The Base Rear position also uses three radial sizes, each tied to a specific 19-inch, 20-inch, or 21-inch wheel package and wider than its front counterpart. Rear tire selection should focus on exact wheel diameter, correct axle position, and maintaining the intended staggered relationship with the front tires.
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 AMG GT 63 Tires for Sale
Available product choice for the 2019 Mercedes-Benz AMG GT 63 is currently centered on the 295/35R20 rear size, with a radial Blackwall option from Nitto in the NT555 G2 series. That makes axle position and wheel diameter the main comparison points before moving into product-level details.
Common questions for the 2019 Mercedes-Benz AMG GT 63 usually center on its staggered tire sizing, front-versus-rear fitment, wheel diameter, and how to choose the right radial tire for the specific setup on the car.
Tire Size & Fitment
What tire size fits a 2019 Mercedes-Benz AMG GT 63?
The 2019 Mercedes-Benz AMG GT 63 uses staggered radial tire sizes rather than one uniform fitment. Front sizes are 255/45R19, 265/40R20, and 275/35R21, while rear sizes are 285/40R19, 295/35R20, and 315/30R21, with each front size paired to a corresponding rear size on the same wheel diameter.
The most important step is confirming both axle position and wheel diameter before choosing a tire. A front tire should not be selected from the rear size group, and a 19-inch fitment should not be mixed with a 20-inch or 21-inch setup unless the entire wheel-and-tire package has been changed intentionally and checked for compatibility.
What size rim does a 2019 Mercedes-Benz AMG GT 63 use?
The 2019 Mercedes-Benz AMG GT 63 uses 19-inch, 20-inch, and 21-inch rim diameters across its supported tire sizes. The 19-inch setup uses 255/45R19 front and 285/40R19 rear, the 20-inch setup uses 265/40R20 front and 295/35R20 rear, and the 21-inch setup uses 275/35R21 front and 315/30R21 rear.
Because the car uses multiple rim diameters, measuring or confirming the wheel already on the vehicle matters before ordering tires. That is especially important on cars that may have been optioned differently or fitted with aftermarket wheels, since choosing by model name alone can lead to the wrong tire size for the actual wheel package.
Why does the 2019 Mercedes-Benz AMG GT 63 have more than one tire size?
The 2019 Mercedes-Benz AMG GT 63 has more than one tire size because it uses a staggered fitment and supports multiple wheel-diameter packages. Each setup pairs a narrower front tire with a wider rear tire, and those pairs are grouped around 19-inch, 20-inch, or 21-inch wheels rather than a single universal size.
That means the correct tire is tied to the specific configuration on the car, not just the model year and nameplate. Checking the wheel diameter and whether the tire is for the front or rear axle helps narrow the choice quickly and avoids mixing sizes that belong to different staggered combinations.
Choosing the Right Tire
What should I consider when choosing a tire for a 2019 Mercedes-Benz AMG GT 63?
Start with the exact size, axle position, and wheel diameter already on the car. The 2019 Mercedes-Benz AMG GT 63 uses staggered radial sizes, so the correct front and rear pairing matters just as much as the individual tire size itself.
From there, compare the details that affect how the tire suits the car’s use, such as brand, tire series, sidewall style, and any applicable load or construction markings. Cars with replacement wheels or suspension changes deserve an extra clearance check, since even the right nominal size still needs to suit the actual setup.
What sidewall styles are available for 2019 Mercedes-Benz AMG GT 63 tires?
Current product coverage for the 2019 Mercedes-Benz AMG GT 63 includes a Blackwall tire in the 295/35R20 rear size. That gives the car a modern, performance-oriented sidewall presentation rather than a restoration-style visual treatment.
Sidewall style is mainly an appearance decision once the correct size and axle position are settled. On a modern AMG application like this one, the practical priority remains matching the right staggered fitment and wheel diameter first, then comparing available sidewall presentation within the specific size you need.
What brands offer tires for the 2019 Mercedes-Benz AMG GT 63?
Current product availability for the 2019 Mercedes-Benz AMG GT 63 includes Nitto in the 295/35R20 rear size. The available tire in that fitment is part of the NT555 G2 series and uses radial construction with a Blackwall sidewall.
Brand comparison only becomes meaningful after the exact size has been confirmed, since front and rear fitments differ and not every size will have the same product assortment. It helps to begin by identifying the wheel diameter and axle position, then compare the brands and series available within that specific fitment.
Restoration & Appearance
Which tire should I choose for a period-style 2019 Mercedes-Benz AMG GT 63?
A period-style approach on a 2019 Mercedes-Benz AMG GT 63 usually means staying with the correct staggered radial sizing and wheel diameter rather than trying to create a vintage look. This is a modern performance sedan, so appearance is tied more closely to proper contemporary fitment than to classic sidewall treatments.
The best visual result usually comes from preserving the intended front-to-rear proportion of the original-size group already on the car. If the vehicle has been modified with different wheels, checking how the tire profile sits in the fender opening can matter just as much as the brand or series name.
Does correct tire fitment matter for a 2019 Mercedes-Benz AMG GT 63 restoration or preservation project?
Correct tire fitment matters because the 2019 Mercedes-Benz AMG GT 63 relies on a staggered layout with specific front and rear sizes tied to 19-inch, 20-inch, or 21-inch wheels. Preserving the proper size relationship helps maintain the car’s intended stance, wheel fill, and overall visual balance.
For a preservation-minded owner, the goal is usually to match the wheel package actually fitted to the car and avoid mixing sizes from different setups. Any project involving replacement wheels should include a careful check of front and rear dimensions so the appearance stays cohesive and the fit remains appropriate.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 Mercedes-Benz AMG GT 63?
Yes. Wheel changes, suspension lowering, altered offsets, or body modifications can all affect tire fitment on a 2019 Mercedes-Benz AMG GT 63, even when the tire size itself matches one of the supported front or rear dimensions. That matters because the car already uses a wide, staggered layout across multiple rim diameters.
A modified car should be checked for wheel width, offset, steering clearance, and rear fender space before new tires are installed. Even small setup changes can affect how a 19-inch, 20-inch, or 21-inch fitment sits on the vehicle, so measuring the actual package is more reliable than assuming the original combination still applies.
What should I inspect before driving a 2019 Mercedes-Benz AMG GT 63 on new tires?
Check that the tires are mounted in the correct front and rear positions, that the wheel diameters match the sizes installed, and that inflation is set properly for the application. It also helps to inspect for any signs of bead seating issues, visible damage, or contact points after installation.
A short clearance and road test is worthwhile before normal driving, especially on a car with staggered high-performance sizing. Listen for rubbing at full steering lock, confirm there is no interference over bumps, and recheck pressure after the first drive so the new tires can settle in under the correct conditions.
How often should tires on a 2019 Mercedes-Benz AMG GT 63 be inspected?
Tires on a 2019 Mercedes-Benz AMG GT 63 should be inspected regularly for tread condition, uneven wear, cuts, bulges, and pressure loss. On a staggered performance application, front and rear tires can wear differently, so each axle deserves separate attention rather than a quick visual glance.
A monthly inspection is a sensible routine, with an extra check before longer drives or after any wheel, alignment, or suspension work. Cars that spend time parked should also be monitored for flat spotting and age-related cracking, since low mileage does not always mean the tires are still in sound road-going condition.
