The 2018 Mercedes-Benz AMG GT sits firmly in the modern grand-touring and high-performance sports car world, with long-hood proportions and serious road capability that place a premium on correct tire fitment. On this car, tire choice is tied closely to front and rear position, and wheel diameter matters because the rear can use either a 19-inch or 20-inch setup. All primary fitments here are radial metric sizes, so the decision is less about vintage construction and more about matching the exact staggered arrangement, wheel size, and intended use. That makes careful confirmation of front-versus-rear sizing the first step before comparing available tire series and specifications.
Which Tire Size Is Right for The 2018 Mercedes-Benz AMG GT
The 2018 Mercedes-Benz AMG GT uses four primary tire sizes across a staggered front-and-rear setup, and the correct choice depends first on whether you are selecting for the front or rear axle. Rim diameter also matters, because the front sizes use 19-inch wheels while the rear can appear with either 19-inch or 20-inch fitment. Before choosing a tire, confirm the exact wheel diameter and the position on the car.
255/35R19 is a metric radial size in which 255 identifies nominal section width in millimeters, 35 is the aspect ratio, R indicates radial construction, and 19 is the wheel diameter in inches. On the 2018 Mercedes-Benz AMG GT, this size is part of the front fitment on a 19-inch wheel. Available choices in this size include BFGoodrich options in the g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A series, all with Blackwall styling. This size should be evaluated by front-axle application, wheel width, and the overall tire character you want from the available radial choices.
265/35R19 is a metric radial size that uses a 265-millimeter nominal section width, a 35-series profile, and a 19-inch rim diameter. On the 2018 Mercedes-Benz AMG GT, this is also a front-position size, so it should not be chosen interchangeably with the rear fitments simply because the rim diameter matches. Product choices in this size include BFGoodrich and Nitto, with Blackwall sidewalls and series such as g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. Buyers comparing this size should focus on front-wheel compatibility and the tire series that best matches the car's use.
295/30R19 is a wider metric radial size, with 295 denoting nominal section width in millimeters, 30 indicating a lower-profile sidewall, and 19 marking the wheel diameter. On the 2018 Mercedes-Benz AMG GT, this size belongs to the rear fitment, where width and wheel position are central to proper selection. Its lower-profile, wider layout reflects the staggered setup used on this vehicle and makes rear-wheel confirmation especially important. Choose this size only after verifying that the rear wheel is the 19-inch configuration rather than the alternative 20-inch rear arrangement.
295/30R20 follows the same modern metric radial format as the 19-inch rear size, but the final number identifies a 20-inch wheel rather than a 19-inch wheel. On the 2018 Mercedes-Benz AMG GT, this is a rear-position fitment and represents a different wheel-diameter setup from the 295/30R19 alternative. That means the first check is the rear wheel itself, not just the width and profile shown in the size code. This size should be considered when the car is equipped with the 20-inch rear wheel and when clearance and wheel specifications match that configuration.
Sub-model fitment on the 2018 Mercedes-Benz AMG GT is organized by position rather than trim variation, with separate front and rear tire sizes. Checking whether you are replacing front or rear tires is essential, and the rear setup also requires confirmation of 19-inch versus 20-inch wheel diameter.
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2018 Mercedes-Benz AMG GT Base Front
The 2018 Mercedes-Benz AMG GT Base Front uses a 19-inch radial front fitment and may appear with either 255/35R19 or 265/35R19. That means front tire selection should begin with the exact size already on the car, followed by comparison of available brand and tire-series options in that front application.
The 2018 Mercedes-Benz AMG GT Base Rear uses a wider radial rear fitment and may carry either 295/30R19 or 295/30R20. Rear tire selection therefore depends on confirming the actual wheel diameter first, then matching the tire size to the rear wheel and overall staggered 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 2018 Mercedes-Benz AMG GT Tires for Sale
Available 19-inch AMG GT tire choices center on BFGoodrich and Nitto radial performance series, with Blackwall styling throughout. The product grid is most useful for comparing size-specific series, rim-width compatibility where stated, load figures where noted, and other specification details within the correct front fitment.
These AMG GT tire FAQs focus on front-versus-rear sizing, 19-inch and 20-inch wheel confirmation, radial fitment, product selection, and the key maintenance checks that matter before road use.
Tire Size & Fitment
What tire size fits a 2018 Mercedes-Benz AMG GT?
The 2018 Mercedes-Benz AMG GT uses a staggered radial tire setup rather than one size at all four corners. Front fitments are 255/35R19 and 265/35R19, while rear fitments are 295/30R19 and 295/30R20, depending on the wheel setup on the car.
That means the first step is identifying both the axle position and the actual wheel diameter before choosing a tire. A front size should be matched to the front wheel, and the rear size should be matched to the rear wheel, especially since the rear can be either 19 or 20 inches.
What size rim does a 2018 Mercedes-Benz AMG GT use?
The 2018 Mercedes-Benz AMG GT uses both 19-inch and 20-inch rim diameters, depending on tire position and setup. The front sizes listed here are 19-inch fitments, while the rear appears with either a 19-inch or 20-inch tire size, so wheel diameter is not the same across every position.
Reading the existing tire sidewall and confirming the wheel itself is the safest way to avoid ordering the wrong diameter. Even when two sizes share similar width and profile conventions, the final diameter number must match the wheel exactly or the tire will not mount properly.
Why does the 2018 Mercedes-Benz AMG GT have more than one tire size?
Multiple tire sizes appear on the 2018 Mercedes-Benz AMG GT because the car uses a staggered setup with different front and rear fitments. The front sizes are narrower than the rear, and the rear also shows two wheel-diameter possibilities, which creates more than one valid size combination across the vehicle.
That makes position-specific verification more important than choosing by model name alone. Before replacing one tire or a full set, check whether the car still has its current wheel package, whether the front and rear diameters match the existing setup, and whether any previous owner changed the wheel arrangement.
Choosing the Right Tire
What should I consider when choosing a 255/35R19 tire for a 2018 Mercedes-Benz AMG GT?
A 255/35R19 tire for a 2018 Mercedes-Benz AMG GT should be chosen first by confirming that this is the exact front size on the car. From there, the main differences come from tire series, construction details within the radial category, stated rim-width compatibility, weight, and any published load information tied to the product.
BFGoodrich offers several choices in this size, including g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A, all in Blackwall form. Matching the tire to the wheel width and the car's intended use matters more than selecting by brand name alone when several valid options exist.
What brands offer tires for the 2018 Mercedes-Benz AMG GT?
For the AMG GT sizes with available product coverage here, BFGoodrich and Nitto are the brands represented. BFGoodrich appears in both 255/35R19 and 265/35R19, while Nitto appears in 265/35R19, giving buyers a few brand and series combinations to compare within the correct front fitment.
Brand should be considered alongside the exact size, wheel compatibility, and the tire series itself rather than as a shortcut decision. Two tires from the same brand can serve different purposes, so it helps to compare the series name, published specifications, and how the tire will be used on the car.
What tire series are available for the 2018 Mercedes-Benz AMG GT?
The available AMG GT tire series in the covered front sizes include BFGoodrich g-Force Comp 2 AS, BFGoodrich g-Force Sport Comp 2, BFGoodrich g-Force Phenom T/A, and Nitto NT555 G2. These series all fall within radial performance-style offerings, but they are not all the same simply because they share the correct basic size format.
Choosing between series comes down to the exact size on the car, stated wheel-width range where available, and the product characteristics that matter for how the AMG GT is driven. A careful comparison is especially useful when replacing only the front pair and trying to maintain a consistent setup.
Restoration & Appearance
Does correct tire fitment matter for a 2018 Mercedes-Benz AMG GT restoration?
Correct tire fitment still matters on a 2018 Mercedes-Benz AMG GT even though it is a modern performance car rather than a vintage restoration candidate. The car's visual stance and overall presentation depend heavily on maintaining the proper staggered relationship between front and rear sizes and matching the tire diameter to the actual wheels.
An appearance-focused refresh should start with the exact sizes already fitted and a close look at wheel diameter before anything else. Keeping the proportions consistent usually matters more than chasing a different size, especially on a car where front and rear fitment are intentionally distinct.
How does tire construction affect the appearance of a restored 2018 Mercedes-Benz AMG GT?
On the 2018 Mercedes-Benz AMG GT, primary fitment is radial across all listed sizes, so construction changes are not a bias-ply-versus-radial issue. Appearance is shaped more by keeping the proper low-profile metric sizing, the correct front-to-rear stagger, and a clean Blackwall presentation than by switching between fundamentally different construction types.
That means the visual goal is usually preserving the car's intended modern performance look rather than recreating a period bias-ply style. Checking sidewall proportions and wheel diameter has a greater effect on how the car sits and presents than making small changes within tires that share the same basic radial format.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Mercedes-Benz AMG GT?
Yes, modifications can affect tire fitment on a 2018 Mercedes-Benz AMG GT, especially when the car already uses staggered sizing and more than one rear wheel diameter. Aftermarket wheels, altered offsets, suspension changes, or body modifications can change how much room is available for the correct size at full steering lock or suspension travel.
A modified AMG GT should be checked for wheel width, wheel diameter, and clearance at both the fender and suspension before selecting replacement tires. Even when the tire size matches a recognized AMG GT fitment, the actual vehicle setup can change what works comfortably on the car.
What should I inspect before driving a 2018 Mercedes-Benz AMG GT on new tires?
Before driving a 2018 Mercedes-Benz AMG GT on new tires, inspect tire pressure, confirm that each tire is mounted in the correct front or rear position, and verify that the size matches the wheel diameter. It is also smart to look for any contact concerns near the fender liner, suspension components, and steering range before heading out.
A short, careful first drive helps confirm that the car tracks normally and that nothing rubs under turning or compression. After that, recheck inflation and give the tires another visual inspection, especially if the car has sat for long periods or has had any wheel or suspension changes.
How often should tires on a 2018 Mercedes-Benz AMG GT be inspected?
Tires on a 2018 Mercedes-Benz AMG GT should be inspected regularly, not just when tread looks low. A quick visual check before driving and a more thorough inspection at routine intervals helps catch uneven wear, cuts, bulges, punctures, and air loss early, which is especially important on a staggered performance setup.
Cars that are driven less often still need attention because age, storage conditions, and low-use patterns can affect tire condition even when mileage is limited. Looking at the sidewalls, tread surface, and inflation on a regular schedule is a practical habit before spirited driving or a longer road trip.
