The 2018 Mercedes-Benz Trucks GLE550e blends luxury SUV comfort with plug-in hybrid capability, making tire fitment especially important for owners who want the right balance of appearance, road manners, and everyday usability. This is a modern performance-oriented utility vehicle, so wheel and tire selection has a direct effect on stance, handling response, and clearance. The 2018 Mercedes-Benz Trucks GLE550e uses radial tires in two sizes, 255/50R19 and 265/45R20, depending on the wheel setup. That means the key decision is confirming which wheel diameter is on the vehicle first, then choosing the right metric radial size for the way the SUV is equipped and driven.
Which Tire Size Is Right for The 2018 Mercedes-Benz Trucks GLE550e
The 2018 Mercedes-Benz Trucks GLE550e uses two primary tire sizes, and the first thing to confirm is wheel diameter. One fitment uses a 19-inch rim and the other uses a 20-inch rim, both in radial construction, so the correct choice depends on the actual wheel package installed on the vehicle rather than a broad year-make-model assumption.
The size 255/50R19 identifies a metric radial tire with a 255 millimeter section width, a 50-series aspect ratio, and fitment for a 19-inch rim. On the 2018 Mercedes-Benz Trucks GLE550e, this size represents one of the two primary wheel-and-tire combinations used on the vehicle. Its modern metric radial format is familiar to current SUV owners and keeps the selection process focused on matching the correct wheel diameter and overall tire specification. Choose this size only after confirming that the vehicle is actually equipped with 19-inch wheels and that the current setup has not been changed from stock-style dimensions.
The size 265/45R20 is a metric radial format that uses a 265 millimeter section width, a 45-series aspect ratio, and a 20-inch rim diameter. For the 2018 Mercedes-Benz Trucks GLE550e, it is the larger of the two primary fitments and applies to vehicles running a 20-inch wheel package. Compared with older collector-car sizing, this code gives a straightforward read on width, profile, and construction. This size should be evaluated by confirming the actual 20-inch wheel diameter on the SUV, then checking that wheel width, clearance, and any suspension or wheel changes still support the intended fitment.
The covered sub-model fitment is straightforward, but it still includes two tire sizes because the vehicle was equipped with more than one wheel diameter. Checking the exact wheel setup on the specific GLE550e matters more than trim naming alone when selecting the correct tire.
1
2018 Mercedes-Benz Trucks GLE550e 4Matic
The 2018 Mercedes-Benz Trucks GLE550e 4Matic uses radial tires and can be equipped with either of the two primary metric sizes used on this model. Tire selection starts with confirming whether the SUV is wearing 19-inch or 20-inch wheels, then matching the correct size to that setup before comparing tire options.
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
Common questions for the 2018 Mercedes-Benz Trucks GLE550e usually center on the correct tire size, whether the SUV has 19-inch or 20-inch wheels, and what should be checked before replacing tires on a hybrid luxury utility vehicle.
Tire Size & Fitment
What tire size fits a 2018 Mercedes-Benz Trucks GLE550e?
The 2018 Mercedes-Benz Trucks GLE550e uses two primary tire sizes: 255/50R19 and 265/45R20. Both are radial tires, and each size corresponds to a different wheel diameter, so the correct fitment depends on which wheel package is actually on the vehicle.
That makes wheel confirmation the first step before ordering replacement tires. Check the size molded on the current tire sidewall and verify the wheel diameter on the vehicle, especially if it was purchased used or has seen wheel changes, because the 19-inch and 20-inch setups are not the same fitment.
What size rim does a 2018 Mercedes-Benz Trucks GLE550e use?
A 2018 Mercedes-Benz Trucks GLE550e uses either a 19-inch rim with 255/50R19 tires or a 20-inch rim with 265/45R20 tires. Both combinations are part of this model’s primary fitment range, so there is not one universal wheel diameter for every vehicle wearing the GLE550e name.
Rim diameter needs to match the tire size exactly, so a 19-inch tire cannot be mounted on a 20-inch wheel and vice versa. Beyond diameter, it is also smart to confirm actual wheel width and any aftermarket wheel changes before replacing tires, particularly on a vehicle with a performance-oriented SUV stance.
Why does the 2018 Mercedes-Benz Trucks GLE550e have more than one tire size?
The 2018 Mercedes-Benz Trucks GLE550e has more than one tire size because it was equipped with more than one wheel diameter. The two primary fitments are 255/50R19 and 265/45R20, both radial sizes, and each one belongs to a different wheel-and-tire setup.
That does not mean both sizes belong on every vehicle automatically. The practical takeaway is to identify the actual wheel package on the specific SUV before choosing a replacement tire, since diameter, profile, and width all work together and can affect ride height, clearance, and the overall fit on the vehicle.
Choosing the Right Tire
What should I consider when choosing a tire for a 2018 Mercedes-Benz Trucks GLE550e?
Start with the correct primary size for the wheel package on the vehicle: 255/50R19 for a 19-inch wheel or 265/45R20 for a 20-inch wheel. Both are radial fitments, so the basic decision is not bias-ply versus radial, but matching the correct modern metric size to the actual wheel diameter.
After size is confirmed, compare the vehicle’s present setup carefully. Wheel width, any previous wheel changes, and the intended use of the SUV all matter, especially on a heavier luxury hybrid utility vehicle where the wrong size choice can create unnecessary clearance or fitment issues even when the tire looks close at first glance.
How do I choose between the available 255/50R19 and 265/45R20 tires for a 2018 Mercedes-Benz Trucks GLE550e?
The choice between 255/50R19 and 265/45R20 is determined by the wheels on the vehicle, not by personal preference alone. A 2018 Mercedes-Benz Trucks GLE550e with 19-inch wheels needs 255/50R19 tires, while one with 20-inch wheels needs 265/45R20 tires.
Once the wheel diameter is verified, evaluate the rest of the setup before replacing all four tires. Used vehicles sometimes arrive with non-original wheel packages, and even tasteful aftermarket changes can alter what size should be used, so checking wheel markings and current tire sidewalls is more reliable than assuming every GLE550e is equipped the same way.
Why is wheel setup so important when selecting tires for a 2018 Mercedes-Benz Trucks GLE550e?
Wheel setup is critical because the 2018 Mercedes-Benz Trucks GLE550e was fitted with two different primary tire sizes tied to two different rim diameters. The 255/50R19 size belongs to a 19-inch wheel, while the 265/45R20 size belongs to a 20-inch wheel, and that difference determines the correct replacement path.
Looking only at the vehicle badge is not enough when more than one fitment was used. Confirming the actual wheels avoids ordering the wrong diameter and also helps catch vehicles that may have been altered with replacement wheels, suspension changes, or other modifications that affect how the tire sits within the wheel opening.
Restoration & Appearance
Does correct tire fitment matter for a 2018 Mercedes-Benz Trucks GLE550e restoration or preservation project?
Yes, correct tire fitment still matters on a 2018 Mercedes-Benz Trucks GLE550e, even though it is much newer than a traditional collector car. Using the proper 255/50R19 or 265/45R20 size for the vehicle’s actual wheel package helps preserve the intended stance, wheel-to-tire proportion, and overall presentation of the SUV.
Appearance is only part of the story. Proper sizing also supports the way the vehicle sits and clears surrounding components, so a preservation-minded owner should verify the exact wheel setup already on the SUV before replacing tires and avoid assuming that any same-brand or close-looking modern size will present the same way.
How does tire size affect the appearance of a 2018 Mercedes-Benz Trucks GLE550e?
Tire size has a visible effect on the appearance of a 2018 Mercedes-Benz Trucks GLE550e because the vehicle uses modern, low-profile metric radial dimensions tied closely to wheel diameter. A 255/50R19 setup presents differently than a 265/45R20 setup, even though both belong to the same model line.
Owners who care about preserving the intended look should match the replacement size to the wheel package already on the vehicle. A change in diameter or profile can alter how much sidewall is visible and how the SUV fills the wheel opening, so the best appearance result starts with accurate fitment rather than approximate substitution.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Mercedes-Benz Trucks GLE550e?
Yes, modifications can affect tire fitment on a 2018 Mercedes-Benz Trucks GLE550e. Wheel changes, altered offsets, suspension lowering, or other ride-height adjustments can all change how a 255/50R19 or 265/45R20 tire sits in relation to the fenders, steering components, and suspension hardware.
That matters because this model already has two primary factory-type fitments, so an owner should confirm what is actually on the vehicle before replacing tires. A close-looking size may still create issues if the wheel width, offset, or suspension geometry has been altered, making a physical inspection more useful than assumptions based on model name alone.
What should I inspect before driving a 2018 Mercedes-Benz Trucks GLE550e on new tires?
Before driving a 2018 Mercedes-Benz Trucks GLE550e on new tires, inspect the wheel diameter, confirm the installed size matches the wheel package, and look over the condition of the wheels themselves. Tire pressure should also be set correctly, and the surrounding suspension and steering areas should be free of any obvious interference concerns.
A short visual check goes a long way on a vehicle like this. Make sure there is no rubbing at full steering lock, verify that the tires seat properly on the wheels, and look for any signs of uneven old-tire wear that might point to alignment or suspension issues worth correcting before regular road use resumes.
How often should tires on a 2018 Mercedes-Benz Trucks GLE550e be inspected?
Tires on a 2018 Mercedes-Benz Trucks GLE550e should be inspected regularly, not just when replacement time arrives. Frequent checks for tread wear, cracking, cuts, bulges, and air loss are worthwhile on any modern SUV, especially one that may alternate between daily use, seasonal use, or longer parked periods.
A practical routine is to inspect the tires visually before longer drives and any time the vehicle’s ride or steering feel changes. Owners should also keep an eye on whether the SUV still wears its intended 19-inch or 20-inch setup, since unnoticed wheel swaps or previous-owner changes can complicate future tire replacement decisions.
