The 2019 Mercedes-Benz Trucks GLE400 sits in the modern luxury SUV market with the kind of road manners, presence, and all-weather usability buyers expect from a 4Matic-equipped Mercedes. On a vehicle like this, tire choice affects more than appearance alone, because wheel diameter, profile, and overall stance all shape how the SUV feels and sits on the road. The 2019 Mercedes-Benz Trucks GLE400 uses radial tires in two fitments, 255/50R19 and 265/45R20. That makes the real decision less about vintage-style construction and more about confirming the wheel setup already on the vehicle, then choosing the right size for its intended use and condition.
Which Tire Size Is Right for The 2019 Mercedes-Benz Trucks GLE400
The 2019 Mercedes-Benz Trucks GLE400 uses two primary tire sizes, and the first step is confirming which wheel diameter is on the vehicle. Both sizes are radial fitments, but one is built for a 19-inch rim and the other for a 20-inch rim. On the GLE400 4Matic, selecting the right tire starts with matching the existing wheel setup rather than choosing between different construction types.
255/50R19 is a modern metric radial size in which 255 identifies the nominal section width in millimeters, 50 is the aspect ratio, R designates radial construction, and 19 is the rim diameter in inches. On the 2019 Mercedes-Benz Trucks GLE400, this size suits vehicles equipped with the 19-inch wheel setup. Its proportions reflect a contemporary SUV fitment rather than an older bias-ply convention. Choosing this size means verifying that the vehicle is actually on 19-inch wheels and that the current wheel and suspension setup still matches the original tire profile.
265/45R20 is also a modern metric radial size, with 265 indicating nominal section width in millimeters, 45 showing the aspect ratio, R identifying radial construction, and 20 marking the wheel diameter in inches. For the 2019 Mercedes-Benz Trucks GLE400, this size belongs to the 20-inch wheel configuration. That makes it a distinct fitment choice rather than a simple variation of the 19-inch setup. Before selecting it, check the actual wheel diameter on the vehicle and make sure no aftermarket wheel or suspension changes have altered the clearance picture.
Sub-model fitment is straightforward here, because the GLE400 4Matic uses the same two primary tire sizes as the broader model coverage. The important step is still confirming whether the vehicle is fitted with 19-inch or 20-inch wheels before choosing a replacement tire.
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2019 Mercedes-Benz Trucks GLE400 4Matic
The 2019 Mercedes-Benz Trucks GLE400 4Matic uses radial tires and can be equipped with either the 255/50R19 or 265/45R20 fitment depending on wheel setup. Tire selection comes down to matching the wheel diameter already on the SUV and checking that any prior wheel or suspension changes have not altered the intended fitment.
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
These FAQs focus on the tire sizes used on the 2019 Mercedes-Benz Trucks GLE400, how to confirm the correct wheel diameter, and what to check before replacing tires on a modern luxury SUV with two possible fitments.
Tire Size & Fitment
What tire size fits a 2019 Mercedes-Benz Trucks GLE400?
The 2019 Mercedes-Benz Trucks GLE400 uses two tire sizes: 255/50R19 and 265/45R20. Both are radial fitments, and both apply to the GLE400 4Matic depending on the wheel package installed on the vehicle.
The right choice depends on the wheel diameter already on the SUV. A 19-inch wheel requires 255/50R19, while a 20-inch wheel requires 265/45R20. Checking the current tire sidewall and confirming the wheel size before ordering is the most important step, especially if the vehicle has had wheel or suspension changes at any point.
What size rim does a 2019 Mercedes-Benz Trucks GLE400 use?
The 2019 Mercedes-Benz Trucks GLE400 uses either a 19-inch or 20-inch rim, depending on which tire size is on the vehicle. The 255/50R19 tire fits a 19-inch rim, and the 265/45R20 tire fits a 20-inch rim.
That means rim diameter must be confirmed before selecting replacement tires. Tire sizes that look close in overall proportions are not interchangeable across different wheel diameters. A quick check of the wheel itself or the size molded into the current tire sidewall will usually settle the question and prevent ordering the wrong fitment.
Why does the 2019 Mercedes-Benz Trucks GLE400 have more than one tire size?
The 2019 Mercedes-Benz Trucks GLE400 has more than one tire size because it can be equipped with different wheel diameters. In this case, the two fitments are 255/50R19 and 265/45R20, both in radial construction.
Multiple tire sizes on the same model usually reflect different wheel packages rather than conflicting fitment information. The practical takeaway is simple: match the replacement tire to the wheels actually on the vehicle. Looking only at the model name is not enough when two rim diameters are in use across the same year and sub-model coverage.
Choosing the Right Tire
What should I consider when choosing a tire for a 2019 Mercedes-Benz Trucks GLE400?
Start with the exact tire size already matched to the vehicle's wheel diameter: 255/50R19 for a 19-inch setup or 265/45R20 for a 20-inch setup. Since both primary fitments are radial, the decision is centered on correct sizing and wheel compatibility rather than choosing between bias-ply and radial construction.
Beyond size, consider how the SUV is used and whether it remains on its original wheel and suspension configuration. A GLE400 used mainly for everyday road driving may call for different priorities than one that sees seasonal storage or limited mileage. Matching the tire to the actual wheel setup is the foundation of a sound selection.
How do I choose between the available 255/50R19 and 265/45R20 tires for a 2019 Mercedes-Benz Trucks GLE400?
The choice between 255/50R19 and 265/45R20 is not a matter of preference alone. Each size belongs to a different wheel diameter, so the correct tire is determined by whether the 2019 Mercedes-Benz Trucks GLE400 is equipped with 19-inch or 20-inch wheels.
Once wheel diameter is confirmed, compare replacement tires within that same size rather than crossing to the other fitment. That approach keeps the selection process grounded in the vehicle's actual setup. It also reduces the chance of clearance issues or mounting problems that can arise when the tire size does not match the installed wheel.
What does 255/50R19 or 265/45R20 mean on a 2019 Mercedes-Benz Trucks GLE400?
Both are modern metric radial tire sizes. In 255/50R19, the 255 is the nominal section width in millimeters, 50 is the aspect ratio, R means radial construction, and 19 is the wheel diameter in inches. The same pattern applies to 265/45R20, with a wider nominal section width and a 20-inch rim.
Understanding the size code helps prevent costly mistakes when replacing tires. The final number is especially important because it must match the wheel diameter exactly. Even when two sizes have similar overall proportions, the GLE400 still needs the tire that corresponds to the wheel package actually installed on the vehicle.
Restoration & Appearance
Does correct tire fitment matter for a 2019 Mercedes-Benz Trucks GLE400 restoration or preservation project?
Yes, correct tire fitment still matters on a 2019 Mercedes-Benz Trucks GLE400, even though this is a modern vehicle rather than a traditional restoration-era collector car. The correct tire size preserves the intended relationship between the wheel, sidewall profile, and overall stance of the SUV.
For a preservation-minded owner, the key is keeping the tire size aligned with the wheel package already on the vehicle. Using 255/50R19 on a 19-inch setup or 265/45R20 on a 20-inch setup helps maintain the proper visual balance. Any departure from those sizes should be checked carefully against wheel fit and body clearance.
How does tire size affect the appearance of a 2019 Mercedes-Benz Trucks GLE400?
Tire size has a noticeable effect on how a 2019 Mercedes-Benz Trucks GLE400 sits and looks, because sidewall height and wheel diameter work together to shape the SUV's overall presentation. The two primary fitments, 255/50R19 and 265/45R20, each correspond to a specific wheel setup.
Appearance changes quickly when the tire does not match the intended wheel package. A mismatched size can alter sidewall proportion and upset the visual balance between the wheel opening and the tire. Owners focused on preserving the vehicle's original character should confirm the existing wheel diameter before making any cosmetic tire decisions.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 Mercedes-Benz Trucks GLE400?
Yes, modifications can affect tire fitment on a 2019 Mercedes-Benz Trucks GLE400. Aftermarket wheels, suspension changes, lowering, altered offsets, or body modifications can all change the space available for either the 255/50R19 or 265/45R20 tire size.
That matters because the GLE400 already has two legitimate wheel-and-tire combinations, so assumptions can be risky. Checking actual wheel diameter is only the first step. It also helps to inspect wheel width, inner clearance, outer fender clearance, and steering travel before replacing tires on a vehicle that may no longer be in its original configuration.
What should I inspect before driving a 2019 Mercedes-Benz Trucks GLE400 on new tires?
Before driving a 2019 Mercedes-Benz Trucks GLE400 on new tires, inspect the wheel diameter, verify the tire size matches that wheel, and confirm that the tires are mounted and inflated properly. It is also wise to look over the wheels themselves for damage, cracks, or obvious mounting-surface issues.
A short clearance check is equally important. Turn the steering from lock to lock, look for any rubbing points, and make sure suspension components and wheel wells have adequate space. On a vehicle with previous wheel or suspension changes, this extra inspection helps catch fitment problems before they become road-use issues.
How often should tires on a 2019 Mercedes-Benz Trucks GLE400 be inspected?
Tires on a 2019 Mercedes-Benz Trucks GLE400 should be inspected regularly, not just when replacement time arrives. Routine checks should include tread condition, uneven wear, cuts, bulges, cracking, and any sign of persistent air loss, especially on a vehicle that may see mixed seasonal use.
Regular inspection matters because fitment issues and tire-condition problems often show up gradually. Looking over the tires before longer drives and during normal maintenance visits can reveal alignment wear, damage, or aging before they become larger concerns. Keeping inflation consistent and watching for changes in ride feel can also help catch problems early.
