The 2018 Mercedes-Benz Trucks GLE43 AMG sits in the modern performance-SUV world where luxury, all-weather capability, and AMG tuning meet larger-diameter wheel packages. Tire selection on this model is less about vintage-style construction and more about matching the exact wheel and axle setup already on the vehicle. This GLE43 AMG uses radial fitments across multiple sizes, including 20-, 21-, and 22-inch applications, with coupe models adding a staggered front-and-rear arrangement. The real choice centers on identifying the correct sub-model and wheel diameter first, then selecting the right metric radial size for the intended appearance and road use. That matters even more if the vehicle has replacement wheels or other modifications.
Which Tire Size Is Right for The 2018 Mercedes-Benz Trucks GLE43 AMG
The 2018 Mercedes-Benz Trucks GLE43 AMG does not use one universal tire size. Six radial sizes appear across this model line, and the correct choice depends on whether the vehicle is the 4Matic model or the coupe's front or rear position, as well as whether it is on 20-, 21-, or 22-inch wheels. Confirming the exact sub-model and wheel diameter is the first step before comparing tire options.
A 265/40R21 tire uses a 265-millimeter nominal section width, a 40-series aspect ratio, radial construction, and a 21-inch rim diameter. On the 2018 Mercedes-Benz Trucks GLE43 AMG, this is one of the radial fitments used on the 4Matic model, so matching the existing wheel setup is important before selection. Its practical role is tied to preserving the intended relationship between tire width, sidewall height, and 21-inch wheel fitment. This size should be chosen only after confirming that the vehicle is equipped for the 21-inch application rather than the alternate 20-inch setup.
A 265/45R20 tire carries the same 265-millimeter nominal width as the 21-inch version, but with a 45-series profile on a 20-inch radial casing. For the 2018 Mercedes-Benz Trucks GLE43 AMG, it serves as the alternate 4Matic fitment and is tied directly to the smaller wheel diameter. That means the decision is not simply about width, since rim diameter and sidewall proportion change with this size. It makes the most sense for vehicles already using the 20-inch wheel package and should be checked carefully if wheels have been changed from stock sizing.
A 275/45R21 tire uses a 275-millimeter nominal section width, a 45-series profile, radial construction, and a 21-inch rim. On the 2018 Mercedes-Benz Trucks GLE43 AMG coupe, this size is used at the front, where it forms part of a staggered setup rather than a same-size arrangement at all four corners. That makes position on the vehicle just as important as the size itself. This front fitment should be evaluated alongside the rear size already on the coupe so the tire package remains consistent with the wheel diameter and axle layout in use.
A 285/40R22 tire combines a 285-millimeter nominal section width with a 40-series profile and radial construction for a 22-inch wheel. On the 2018 Mercedes-Benz Trucks GLE43 AMG coupe, it appears as the front size for the larger 22-inch staggered arrangement. The larger rim diameter changes the fitment context immediately, so this size should not be treated as interchangeable with the 21-inch coupe front option. It is the right size to evaluate when the coupe already has the 22-inch front wheel package and the rear tire size is being matched to that same setup.
A 315/40R21 tire is a substantially wider metric radial, using a 315-millimeter nominal section width, a 40-series profile, and a 21-inch rim diameter. For the 2018 Mercedes-Benz Trucks GLE43 AMG coupe, this is a rear-position fitment, so it belongs to a staggered setup where front and rear sizes differ by design. That wider rear application makes axle position critical during replacement. This size should be considered only for the coupe rear when the existing wheels and front-to-rear pairing confirm the 21-inch staggered package already on the vehicle.
A 325/35R22 tire uses a 325-millimeter nominal section width, a 35-series profile, radial construction, and a 22-inch wheel diameter. On the 2018 Mercedes-Benz Trucks GLE43 AMG coupe, it serves as the rear size in the larger 22-inch staggered arrangement, pairing with a different front tire size rather than matching all around. That makes it a position-specific fitment rather than a general GLE43 AMG size. It is the size to review when the coupe is already running the 22-inch rear wheel package and the complete front-and-rear combination is being kept in place.
Sub-model fitment matters on the 2018 Mercedes-Benz Trucks GLE43 AMG because tire size changes with the 4Matic configuration and with the coupe's front and rear positions. Identifying the exact setup first helps avoid mixing wheel diameters or staggered axle sizes that belong to a different version.
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2018 Mercedes-Benz Trucks GLE43 AMG 4Matic
The 2018 Mercedes-Benz Trucks GLE43 AMG 4Matic uses two radial size paths tied to different wheel diameters rather than a front-and-rear staggered arrangement. Tire selection starts with confirming whether the vehicle is on its 20-inch or 21-inch setup, then matching the replacement tire to that wheel package.
2018 Mercedes-Benz Trucks GLE43 AMG 4Matic Coupe Front
The 2018 Mercedes-Benz Trucks GLE43 AMG 4Matic Coupe Front uses dedicated front radial sizes that differ from the rear axle. That means the front tires must be chosen as part of the coupe's staggered fitment, with close attention to whether the vehicle is using the 21-inch or 22-inch wheel package.
2018 Mercedes-Benz Trucks GLE43 AMG 4Matic Coupe Rear
The 2018 Mercedes-Benz Trucks GLE43 AMG 4Matic Coupe Rear uses wider rear radial sizes that are specific to the coupe's staggered setup. Replacing the rear tires correctly means confirming both axle position and wheel diameter so the rear size remains matched to the corresponding front application.
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.
Frequently Asked Questions
The most useful questions for the 2018 Mercedes-Benz Trucks GLE43 AMG usually come down to exact tire size, wheel diameter, coupe front-versus-rear fitment, and how to choose the right radial tire once the vehicle's specific setup is confirmed.
Tire Size & Fitment
What tire size fits a 2018 Mercedes-Benz Trucks GLE43 AMG?
The 2018 Mercedes-Benz Trucks GLE43 AMG uses several radial tire sizes rather than one universal fitment. The 4Matic model uses 265/40R21 or 265/45R20, while the 4Matic Coupe uses 275/45R21 or 285/40R22 at the front and 315/40R21 or 325/35R22 at the rear.
Choosing correctly starts with identifying the exact version of the vehicle and the wheel diameter already on it. Coupe models also require attention to axle position because the front and rear sizes are different, so a buyer should confirm both the current wheel package and whether the vehicle uses a staggered setup before replacing tires.
What size rim does a 2018 Mercedes-Benz Trucks GLE43 AMG use?
The 2018 Mercedes-Benz Trucks GLE43 AMG appears with 20-inch, 21-inch, and 22-inch rim diameters depending on configuration. The 265/45R20 size uses a 20-inch rim, the 265/40R21, 275/45R21, and 315/40R21 sizes use 21-inch rims, and the 285/40R22 and 325/35R22 sizes use 22-inch rims.
Rim diameter is the first thing to verify because the tire must match the wheel exactly. A 21-inch tire cannot be mounted on a 20-inch or 22-inch wheel, and on coupe models the correct rim size also needs to be matched to front or rear position so the staggered package stays consistent.
Why does the 2018 Mercedes-Benz Trucks GLE43 AMG have more than one tire size?
More than one tire size appears on the 2018 Mercedes-Benz Trucks GLE43 AMG because the fitment changes by sub-model and wheel package. The 4Matic model uses either a 20-inch or 21-inch setup, while the coupe uses staggered front and rear sizing in either 21-inch or 22-inch form.
That means the correct replacement is tied to the vehicle's exact configuration, not just the model name on the badge. Checking the tire sidewall already on the vehicle, confirming wheel diameter, and noting whether the vehicle is a standard 4Matic or a coupe will prevent choosing a size meant for a different axle or wheel package.
Choosing the Right Tire
What should I consider when choosing a tire for a 2018 Mercedes-Benz Trucks GLE43 AMG?
Start with the exact size already required by the vehicle's configuration, since the 2018 Mercedes-Benz Trucks GLE43 AMG uses multiple radial sizes across different wheel diameters and coupe axle positions. A correct choice begins with matching the tire to the vehicle's specific 4Matic or coupe setup rather than selecting by model name alone.
After size is confirmed, compare the replacement tire against the wheel package and intended use of the vehicle. A GLE43 AMG on factory-style wheels needs a size that matches the existing rim diameter and axle position, while any aftermarket wheel change makes it especially important to verify clearance, width relationship, and front-to-rear consistency.
How do I choose between the available 4Matic tire sizes for a 2018 Mercedes-Benz Trucks GLE43 AMG?
For the 2018 Mercedes-Benz Trucks GLE43 AMG 4Matic, the choice is between 265/45R20 and 265/40R21, and that decision follows the wheel diameter already on the vehicle. Both are radial sizes with the same nominal width, but they are not the same fitment because one is built for a 20-inch rim and the other for a 21-inch rim.
A buyer should confirm the wheel size directly before selecting a tire, especially if the vehicle was purchased used or has had wheel changes. Matching the tire to the actual rim is more important than comparing the two sizes as alternatives, since they belong to different wheel packages on the same model.
How do I choose between the available coupe tire sizes for a 2018 Mercedes-Benz Trucks GLE43 AMG?
Coupe fitment on the 2018 Mercedes-Benz Trucks GLE43 AMG should be chosen by axle position and wheel diameter together. The front uses 275/45R21 or 285/40R22, while the rear uses 315/40R21 or 325/35R22, so the tire must match both where it mounts and which staggered wheel package the coupe carries.
That makes side-to-side replacement straightforward, but front-to-rear substitution is not. Checking the existing tire sidewalls, confirming whether the coupe is on 21-inch or 22-inch wheels, and preserving the established front-and-rear pairing will help maintain the intended fitment relationship already built into the vehicle.
Restoration & Appearance
Does correct tire fitment matter for a 2018 Mercedes-Benz Trucks GLE43 AMG restoration or refurbishment?
Correct tire fitment still matters on a 2018 Mercedes-Benz Trucks GLE43 AMG even though it is a newer vehicle than the traditional collector-era cars often discussed in restoration circles. The right size preserves the intended wheel-to-tire relationship, and on coupe models it also preserves the staggered front-and-rear presentation that is part of the vehicle's overall stance.
A refurbishment-minded owner should focus on keeping the proper size for the exact sub-model and wheel package already in use. If appearance originality matters, compare the vehicle against its current wheel setup and any vehicle-specific historical references before changing sizes, since a different diameter or axle pairing can alter both look and fitment.
How does tire sizing affect the appearance of a 2018 Mercedes-Benz Trucks GLE43 AMG?
Tire sizing has a visible effect on the 2018 Mercedes-Benz Trucks GLE43 AMG because sidewall profile, section width, and wheel diameter all shape the vehicle's stance. The difference between 20-, 21-, and 22-inch applications changes how much sidewall is visible, and the coupe's wider rear sizes create a distinctly different rear view than a same-size setup would.
Appearance should still be approached through correct fitment first. Keeping the proper front and rear relationship on coupe models and matching the tire to the actual wheel diameter will maintain a more coherent presentation, while mixing sizes from different packages can make the vehicle look mismatched even before clearance issues are considered.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Mercedes-Benz Trucks GLE43 AMG?
Yes, modifications can affect tire fitment on a 2018 Mercedes-Benz Trucks GLE43 AMG. Aftermarket wheels, changes in wheel width or offset, suspension lowering, and other alterations can all change how a tire sits in relation to the fender, steering components, and suspension, even when the tire size itself matches one of the recognized fitments.
That is especially important on coupe models with staggered front and rear sizing, where there is less room for casual substitutions. Any modified vehicle should be checked for actual wheel diameter, axle position, clearance at full steering lock, and space under suspension compression before a replacement tire is chosen for regular road use.
What should I inspect before driving a 2018 Mercedes-Benz Trucks GLE43 AMG on new tires?
Before driving a 2018 Mercedes-Benz Trucks GLE43 AMG on new tires, inspect the wheel diameter, confirm the installed size matches the correct sub-model and axle position, and make sure inflation is set properly for the vehicle's use. It is also wise to look for any obvious interference points around the fenders, suspension, and steering components.
A short initial road check can reveal vibration, rubbing, or an unexpected mismatch in front-to-rear fitment on coupe applications. Rechecking pressure after the first drives and verifying that each tire remains seated, balanced, and free from contact marks will help catch fitment issues before the vehicle is put into normal service.
How often should tires on a 2018 Mercedes-Benz Trucks GLE43 AMG be inspected?
Tires on a 2018 Mercedes-Benz Trucks GLE43 AMG should be inspected regularly, not just when tread looks worn. A monthly visual and pressure check is a sensible habit, and the tires should also be examined before longer drives for uneven wear, cuts, bulges, cracking, punctures, or signs that a front or rear coupe tire has been replaced with the wrong size.
Vehicles that see intermittent use deserve even closer attention because low mileage does not prevent aging or slow air loss. Watching the tires over time helps catch alignment, balance, or clearance issues early, particularly on staggered setups where the front and rear sizes differ and rotation patterns are more limited.
