The 2010 Mercedes-Benz Trucks ML350 belongs to the era when luxury SUVs were expected to blend everyday comfort, confident highway manners, and a more substantial road presence than a traditional passenger car. That makes tire selection especially important, because the ML350 uses modern radial fitments and appears with either 255/50R19 or 265/45R20 depending on the vehicle's configuration. Both sizes keep the fitment conversation centered on wheel diameter first, then on the balance between ride character, appearance, and replacement choices within the correct size. For an ML350 that is still stock, matching the tire to the actual wheel setup is the key first step before comparing brands or tread patterns.
Which Tire Size Is Right for The 2010 Mercedes-Benz Trucks ML350
The 2010 Mercedes-Benz Trucks ML350 uses two primary tire sizes, and the first thing to confirm is which wheel diameter is on the vehicle. Both fitments are radial, but one is built for a 19-inch rim and the other for a 20-inch rim, so selecting the right tire starts with the actual wheel setup rather than the model name alone.
255/50R19 is a metric radial size in which 255 identifies the nominal section width in millimeters, 50 is the aspect ratio, R indicates radial construction, and 19 is the rim diameter in inches. On the 2010 Mercedes-Benz Trucks ML350, this size is one of the main OE-style fitments and is used across more than one covered sub-model. Its role in the fitment range makes it especially important for owners of stock 19-inch wheel setups. Choose this size only after confirming that the vehicle actually wears 19-inch rims and has not been changed to another wheel package.
265/45R20 is a metric radial size where 265 is the nominal section width in millimeters, 45 is the aspect ratio, R marks radial construction, and 20 identifies the rim diameter in inches. For the 2010 Mercedes-Benz Trucks ML350, this size represents the 20-inch fitment used on certain configurations rather than the full range of covered sub-models. It is a separate primary size, not an interchangeable default for every ML350. This fitment should be evaluated by confirming the actual 20-inch wheel package and checking that the vehicle has not been altered from its intended wheel and tire combination.
Sub-model fitment matters on the 2010 Mercedes-Benz Trucks ML350 because not every version uses the same tire-size range. Some covered configurations can use either 255/50R19 or 265/45R20, while the Bluetec 4Matic stays with 255/50R19, so identifying the exact sub-model and wheel setup comes first.
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2010 Mercedes-Benz Trucks ML350 4Matic
The 2010 Mercedes-Benz Trucks ML350 4Matic can use either of the two primary radial fitments, so tire selection begins by confirming whether the vehicle has 19-inch or 20-inch wheels. Once the wheel diameter is verified, the decision shifts to choosing the right replacement tire within that exact size and overall vehicle setup.
The 2010 Mercedes-Benz Trucks ML350 Base also appears with both primary radial sizes, which means the model name alone is not enough to pick a tire. Matching the replacement tire to the actual wheel diameter on the vehicle is the critical step before comparing any options.
The 2010 Mercedes-Benz Trucks ML350 Bluetec 4Matic uses 255/50R19 as its covered tire fitment, keeping selection more straightforward than the other sub-models shown here. For this version, the focus is less about choosing between two sizes and more about confirming the stock 19-inch wheel setup and tire condition.
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
Tire questions for the 2010 Mercedes-Benz Trucks ML350 usually come down to size, wheel diameter, and how fitment changes by sub-model. The FAQs below focus on selecting between the 19-inch and 20-inch radial fitments, confirming wheel compatibility, and checking the vehicle before road use.
Tire Size & Fitment
What tire size fits a 2010 Mercedes-Benz Trucks ML350?
The 2010 Mercedes-Benz Trucks ML350 uses two primary tire sizes: 255/50R19 and 265/45R20. Both are radial fitments, but they are tied to different wheel diameters, so the correct choice depends on the actual wheels installed on the vehicle rather than the model name alone.
That means the first check is simple but important: confirm whether the ML350 has 19-inch or 20-inch rims. The Bluetec 4Matic uses 255/50R19, while the Base and 4Matic versions may appear with either size, making the wheel and sub-model combination the deciding factor before choosing a replacement tire.
What size rim does a 2010 Mercedes-Benz Trucks ML350 use?
A 2010 Mercedes-Benz Trucks ML350 uses either a 19-inch or 20-inch rim, depending on the tire size fitted to the vehicle. The 255/50R19 size is built for a 19-inch rim, while the 265/45R20 size is built for a 20-inch rim.
Rim diameter needs to be confirmed before anything else because a 19-inch tire cannot be mounted on a 20-inch wheel, and the reverse is also true. Checking the wheel itself or the size marking on the current tire is the quickest way to avoid ordering the wrong size for an ML350 that may have multiple fitment paths.
Do all 2010 Mercedes-Benz Trucks ML350 sub-models use the same tire size?
No. The 2010 Mercedes-Benz Trucks ML350 Base and 4Matic can use either 255/50R19 or 265/45R20, while the Bluetec 4Matic uses 255/50R19. All of these are radial sizes, but the fitment is not identical across every covered sub-model.
That difference matters because selecting by year, make, and model alone can still leave two possible sizes in play. The most reliable approach is to identify the exact sub-model and then verify the wheel diameter currently on the vehicle, especially if the ML350 has had wheels changed at some point in its service life.
Choosing the Right Tire
What should I consider when choosing a tire for a 2010 Mercedes-Benz Trucks ML350?
Start with the correct primary size for the vehicle's actual wheel setup: 255/50R19 for a 19-inch rim or 265/45R20 for a 20-inch rim. On the 2010 Mercedes-Benz Trucks ML350, both are radial fitments, so the key early decision is not construction type but correct size and wheel compatibility.
After the size is confirmed, compare the tire's intended use with how the ML350 is driven, including highway use, seasonal conditions, and whether the suspension and wheels remain stock. A careful choice should also take overall condition into account, since uneven wear or prior modifications can affect how a replacement tire behaves on the vehicle.
How do I choose between the available 255/50R19 and 265/45R20 tires for a 2010 Mercedes-Benz Trucks ML350?
The choice between 255/50R19 and 265/45R20 is not a matter of preference alone, because each size belongs to a different wheel diameter. A 2010 Mercedes-Benz Trucks ML350 must use the tire size that matches its actual rim, so the correct size is determined by the wheel package on the vehicle.
Once the wheel diameter is settled, compare replacement options within that exact size rather than trying to move between the two. Looking at the current tire size marking, checking the wheel itself, and confirming whether the ML350 is Base, 4Matic, or Bluetec 4Matic will keep the decision focused and prevent avoidable fitment mistakes.
Why does the 2010 Mercedes-Benz Trucks ML350 have more than one tire size?
The 2010 Mercedes-Benz Trucks ML350 has more than one tire size because different covered configurations use different wheel packages. In this range, the vehicle appears with either 255/50R19 on a 19-inch rim or 265/45R20 on a 20-inch rim, both in radial construction.
That does not mean every ML350 can move freely between those sizes. Different wheel diameters create separate fitment paths, so the practical job is to match the replacement tire to the vehicle's actual wheel setup and sub-model rather than assuming both sizes apply equally to every example.
Restoration & Appearance
Does correct tire fitment matter for a 2010 Mercedes-Benz Trucks ML350 restoration or preservation project?
Yes. Even on a later collector or preservation-minded vehicle, correct tire fitment matters because the 2010 Mercedes-Benz Trucks ML350 uses specific radial sizes tied to either 19-inch or 20-inch wheels. Keeping the proper size relationship helps preserve the SUV's intended stance, proportions, and everyday road manners.
A careful preservation approach starts by confirming whether the vehicle still carries its original-style wheel package or has been changed over time. Owners who value an authentic presentation should verify the current wheel diameter and compare it with vehicle history, service records, or marque-specific references before changing size.
How does tire size affect the appearance of a 2010 Mercedes-Benz Trucks ML350?
Tire size has a visible effect on the 2010 Mercedes-Benz Trucks ML350 because the vehicle uses either 255/50R19 or 265/45R20, each tied to a different wheel diameter. Even without changing the model itself, a 19-inch or 20-inch wheel and tire package gives the SUV a different visual balance.
That makes it worth matching the replacement size to the wheel setup already on the vehicle instead of choosing by appearance alone. Owners who are trying to preserve the ML350's original look should confirm the existing wheel package first, then keep the tire choice consistent with that established fitment.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2010 Mercedes-Benz Trucks ML350?
Yes. Modifications can affect tire fitment on a 2010 Mercedes-Benz Trucks ML350 even when the vehicle still uses one of its primary sizes, 255/50R19 or 265/45R20. Changes such as aftermarket wheels, suspension alterations, ride-height adjustments, or body changes can all influence how a tire sits and clears.
That is why the vehicle should be checked as it exists now, not just by its original catalog description. Wheel diameter, wheel width, offset, and visible clearance around the fender and steering components are all worth verifying before replacing tires on an ML350 that may no longer be in stock configuration.
What should I inspect before driving a 2010 Mercedes-Benz Trucks ML350 on new tires?
Before driving a 2010 Mercedes-Benz Trucks ML350 on new tires, inspect the wheels for damage, confirm the tire size matches the rim diameter, and make sure the tires were mounted and inflated properly. It is also smart to look over valve stems, lug torque, and overall wheel condition.
A short road check should follow, paying attention to vibration, pulling, rubbing, or unusual steering feel. The ML350 should also have its suspension and alignment condition considered, because worn components can shorten tire life quickly even when the correct 255/50R19 or 265/45R20 size has been installed.
What should I check before a longer drive in a 2010 Mercedes-Benz Trucks ML350?
Before a longer drive in a 2010 Mercedes-Benz Trucks ML350, check tire pressure, tread condition, and the sidewalls for cracking, bulges, or cuts. It is equally important to confirm that the vehicle is running the correct radial size for its wheel setup, whether that is 255/50R19 or 265/45R20.
Longer trips also make it worthwhile to inspect for slow air loss and uneven wear that may point to alignment or suspension issues. On an ML350 that sees intermittent use, age and condition deserve as much attention as tread depth, since an older tire can look usable while still being a poor choice for extended road time.
