The 2018 Mercedes-Benz Trucks GLE350 sits in the modern luxury SUV space, blending everyday road manners with the taller stance and curb presence buyers expect from a premium utility vehicle. For many owners, tire choice is less about chasing a vintage appearance and more about preserving the balance of ride quality, steering response, and confident road use that defines this model. The 2018 Mercedes-Benz Trucks GLE350 uses radial tires in two primary sizes, 255/50R19 and 265/45R20, tied to different wheel diameters. That makes wheel confirmation the first step, followed by comparing tire dimensions, intended use, and overall fitment before selecting a replacement.
Which Tire Size Is Right for The 2018 Mercedes-Benz Trucks GLE350
The 2018 Mercedes-Benz Trucks GLE350 uses two primary tire sizes, and both are modern radial fitments tied to different wheel diameters. Since both the 4Matic and Base sub-models can use either size, the first step is confirming whether the vehicle is on 19-inch or 20-inch wheels before choosing a replacement tire.
The size 255/50R19 identifies a metric radial tire with a 255 millimeter nominal section width, a 50-series profile, and fitment for a 19-inch rim. On the 2018 Mercedes-Benz Trucks GLE350, this size supports the vehicle's modern SUV tire layout and should be matched to the correct wheel diameter before anything else. Its dimensions make it useful as a clear fitment reference when confirming what is already mounted on the vehicle. This size is the right place to start when the GLE350 is equipped with its 19-inch wheel setup and a like-for-like replacement is the goal.
The size 265/45R20 is a metric radial that uses a 265 millimeter nominal section width, a 45-series profile, and a 20-inch rim diameter. For the 2018 Mercedes-Benz Trucks GLE350, it represents the larger wheel fitment and should be selected only after verifying that the vehicle is actually running 20-inch wheels. Its slightly wider section and lower profile reflect a different wheel-and-tire package rather than an automatic substitute for the 19-inch setup. This size matters when replacing tires on a GLE350 that already has the 20-inch configuration in place.
Tire fitment is straightforward here because both covered sub-models use the same two radial tire sizes. The important step is not choosing between sub-model-specific sizes, but confirming whether the vehicle has 19-inch or 20-inch wheels before selecting tires.
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2018 Mercedes-Benz Trucks GLE350 4Matic
The 2018 Mercedes-Benz Trucks GLE350 4Matic uses the same two radial tire size options found across this model line. Tire selection comes down to verifying the wheel diameter on the vehicle, then choosing the correct replacement size for that 19-inch or 20-inch setup.
The 2018 Mercedes-Benz Trucks GLE350 Base also uses the same pair of radial tire sizes. That keeps fitment simple at the sub-model level, but the actual wheel package still needs to be confirmed before choosing between the 19-inch and 20-inch tire sizes.
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 GLE350 usually center on identifying the correct tire size, confirming 19-inch versus 20-inch wheel fitment, and checking the vehicle carefully before replacing tires or returning it to regular road use.
Tire Size & Fitment
What tire size fits a 2018 Mercedes-Benz Trucks GLE350?
The 2018 Mercedes-Benz Trucks GLE350 uses two primary tire sizes: 255/50R19 and 265/45R20. Both are radial sizes, and both are used on this exact model, including the Base and 4Matic sub-models.
The key is confirming which wheel diameter is on the vehicle before ordering tires. A GLE350 equipped with 19-inch wheels needs 255/50R19, while a vehicle on 20-inch wheels needs 265/45R20. Checking the existing tire sidewall and wheel size is the safest first step, especially if the SUV has had previous tire replacements or wheel changes.
What size rim does a 2018 Mercedes-Benz Trucks GLE350 use?
The 2018 Mercedes-Benz Trucks GLE350 uses either a 19-inch or 20-inch rim, depending on which tire size is on the vehicle. The 255/50R19 tire matches a 19-inch rim, and the 265/45R20 tire matches a 20-inch rim.
That difference matters because the two tire sizes are tied directly to two different wheel diameters. Before replacing tires, verify the wheel size currently installed rather than assuming every GLE350 uses the same rim. This is especially important on vehicles that may have changed hands, received dealer accessories, or been fitted with aftermarket wheel packages.
Do all 2018 Mercedes-Benz Trucks GLE350 sub-models use the same tire size?
The covered 2018 Mercedes-Benz Trucks GLE350 sub-models share the same two tire size options. Both the 4Matic and Base versions use 255/50R19 and 265/45R20 as radial fitments.
That means sub-model name alone does not settle tire choice on this vehicle. The actual deciding factor is the wheel package mounted on the SUV. Looking at the tire sidewall, measuring wheel diameter if needed, and confirming that all four corners match will help prevent ordering the wrong size for a GLE350 that has been updated or changed over time.
Choosing the Right Tire
What should I consider when choosing a tire for a 2018 Mercedes-Benz Trucks GLE350?
Start with the correct size and wheel diameter. The 2018 Mercedes-Benz Trucks GLE350 uses either 255/50R19 or 265/45R20, so the first decision is matching the tire to the wheel that is actually on the vehicle.
After size is confirmed, compare how the SUV is used and whether the goal is a straightforward replacement for daily road driving or a change tied to a different wheel setup. It also helps to review the current tire's dimensions, inspect wheel condition, and make sure all four tires are being matched appropriately for the vehicle's existing configuration.
How do I choose between the available 255/50R19 and 265/45R20 tires for a 2018 Mercedes-Benz Trucks GLE350?
These two sizes are not interchangeable choices for the same wheel. The 255/50R19 is for a 19-inch rim, while the 265/45R20 is for a 20-inch rim, so the correct choice depends on the wheel diameter already installed on the 2018 Mercedes-Benz Trucks GLE350.
Once wheel size is confirmed, compare the new tire against the current setup rather than selecting by appearance alone. A previous owner may have changed wheels, and mixed tire sizes can create confusion. Matching the correct size to the existing wheel package helps preserve intended clearance, stance, and general road behavior for the GLE350.
What does 255/50R19 mean on a 2018 Mercedes-Benz Trucks GLE350?
On a 2018 Mercedes-Benz Trucks GLE350, 255/50R19 means a radial tire with a nominal section width of 255 millimeters, a 50-series aspect ratio, and fitment for a 19-inch rim. It is one of the two primary tire sizes used on this model.
Understanding the size code helps prevent ordering a tire that matches only part of the specification. The width, profile, and rim diameter all work together, so changing one number can alter fitment. For a GLE350, the practical next step is checking the tire already mounted on the vehicle and confirming that the wheel diameter matches the replacement size.
Restoration & Appearance
Does correct tire fitment matter for a 2018 Mercedes-Benz Trucks GLE350 restoration or refurbishment?
Yes, correct tire fitment still matters even on a newer vehicle like the 2018 Mercedes-Benz Trucks GLE350. The right tire size helps preserve the intended relationship between wheel diameter, tire profile, and the SUV's overall visual stance.
For a refurbishment-focused owner, the goal is usually consistency with the wheel package currently on the vehicle rather than chasing a vintage-style look. Matching 255/50R19 to 19-inch wheels or 265/45R20 to 20-inch wheels keeps the presentation coherent. If exact original delivery configuration matters, compare the current setup with window-sticker, dealer, or build-reference material.
How does tire size affect the appearance of a 2018 Mercedes-Benz Trucks GLE350?
Tire size has a noticeable effect on how a 2018 Mercedes-Benz Trucks GLE350 sits and presents visually. The 255/50R19 and 265/45R20 sizes both belong to the model, but they pair with different wheel diameters and create different wheel-to-sidewall proportions.
That matters when replacing worn tires on a vehicle you want to keep looking consistent. A GLE350 on 19-inch wheels will naturally show more sidewall than one on 20-inch wheels. Before changing anything, confirm whether the current look comes from the original wheel package or from later modifications so the replacement tire supports the appearance you want.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Mercedes-Benz Trucks GLE350?
Yes, modifications can affect tire fitment on a 2018 Mercedes-Benz Trucks GLE350. Wheel changes, altered offsets, suspension lowering, spacers, or body changes can all influence whether 255/50R19 or 265/45R20 remains the right practical size for the vehicle.
A GLE350 that no longer has its original wheel setup should be checked carefully before replacement tires are chosen. Verify wheel diameter, inspect clearance at steering lock, and look at tire-to-fender and tire-to-suspension space. That extra step helps avoid assuming the current setup matches standard fitment when the SUV may have been modified previously.
What should I inspect before driving a 2018 Mercedes-Benz Trucks GLE350 on new tires?
Before driving a 2018 Mercedes-Benz Trucks GLE350 on new tires, inspect wheel condition, confirm all lug hardware is correct, and make sure the installed tire size matches the wheel diameter. It is also smart to check that all four tires are evenly matched in size and general condition.
A careful walkaround should include tire pressure, visible sidewall damage, tread condition, and any sign of rubbing after installation. During the first drive, pay attention to vibration, steering pull, and clearance under turns or over bumps. Catching those issues early is especially important if the vehicle has replacement wheels or an unknown service history.
What should I check before a longer drive in a 2018 Mercedes-Benz Trucks GLE350?
Before a longer drive, make sure the 2018 Mercedes-Benz Trucks GLE350 is on the correct tire size for its wheels, either 255/50R19 or 265/45R20. Then inspect tire pressure, tread depth, sidewall condition, and any uneven wear that might point to alignment or suspension concerns.
Longer trips put more emphasis on stability and heat buildup, so an older or neglected tire deserves extra scrutiny even if it still holds air. It also helps to look for cracks, bulges, punctures, or signs of slow air loss. A final check of spare-tire readiness and wheel fastener security adds useful peace of mind before road use.
