The 2001 Mercedes-Benz Trucks ML320 came from the first-generation M-Class era, when Mercedes brought luxury SUV comfort into a more everyday, all-weather utility role. That mix of road manners, ride height, and upscale character makes tire choice especially important today, because this ML320 can wear two different primary radial sizes depending on configuration. Base models use 255/65R16, while Sport models use 275/55R17, so the first step is confirming the exact sub-model and wheel diameter on the vehicle. From there, the decision becomes choosing a tire that matches the ML320’s intended use, preserves proper proportions, and suits the condition of the wheels and suspension.
Which Tire Size Is Right for The 2001 Mercedes-Benz Trucks ML320
The 2001 Mercedes-Benz Trucks ML320 uses two primary tire sizes, and the correct one depends on the sub-model and wheel diameter. Base models use a 16-inch radial fitment, while Sport models use a 17-inch radial fitment, so confirming the exact sub-model and the wheels currently on the vehicle is the first step before comparing tire choices.
255/65R16 is a modern metric radial size in which 255 identifies the section width in millimeters, 65 is the aspect ratio, R indicates radial construction, and 16 is the wheel diameter in inches. On the 2001 Mercedes-Benz Trucks ML320, this size belongs to the Base configuration and reflects a taller-sidewall SUV fitment. That extra sidewall height can matter to buyers who want to preserve the vehicle’s original overall stance and a more compliant ride character. Use this size when the ML320 is equipped with the correct 16-inch wheels and the goal is to stay with the proper Base-model fitment.
275/55R17 is also a modern metric radial size, with 275 indicating section width in millimeters, 55 showing the aspect ratio, R for radial construction, and 17 for the wheel diameter. On the 2001 Mercedes-Benz Trucks ML320, this size is used on the Sport configuration, pairing a wider tire with a 17-inch wheel. Its role is different from the Base fitment, so it should not be chosen simply because it appears close in overall dimensions. This is the right size to evaluate when the vehicle is a Sport model or already carries the proper 17-inch wheel setup.
Sub-model fitment matters on the 2001 Mercedes-Benz Trucks ML320 because the covered configurations do not share the same tire size. Identifying whether the vehicle is a Base or Sport model helps narrow the choice quickly and prevents confusion between the 16-inch and 17-inch wheel setups.
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2001 Mercedes-Benz Trucks ML320 Base
The 2001 Mercedes-Benz Trucks ML320 Base uses a 255/65R16 radial tire. Tire selection for this sub-model starts with confirming the 16-inch wheel setup, then choosing a replacement that maintains the intended Base-model fitment and overall proportions.
The 2001 Mercedes-Benz Trucks ML320 Sport uses a 275/55R17 radial tire. That makes wheel diameter especially important, since the Sport fitment belongs to a different rim size and should be matched to the actual wheels on the vehicle before selecting tires.
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
Questions around the 2001 Mercedes-Benz Trucks ML320 usually center on the two correct tire sizes, the difference between Base and Sport fitment, wheel-diameter confirmation, and what to inspect before putting a low-use SUV back into regular road service.
Tire Size & Fitment
What tire size fits a 2001 Mercedes-Benz Trucks ML320?
The 2001 Mercedes-Benz Trucks ML320 uses two different tire sizes depending on the sub-model. The Base model uses 255/65R16, while the Sport model uses 275/55R17. Both are radial tire sizes, but they are tied to different wheel diameters and should be matched to the correct vehicle configuration.
The practical step is to confirm both the sub-model and the wheels currently on the SUV before choosing tires. Many older ML320s have changed hands and may have had wheel swaps over time, so checking the sidewall of the existing tires and the wheel diameter helps prevent ordering a size meant for the other setup.
What size rim does a 2001 Mercedes-Benz Trucks ML320 use?
A 2001 Mercedes-Benz Trucks ML320 uses either a 16-inch or 17-inch rim, depending on the sub-model. The Base model pairs with 255/65R16 on a 16-inch wheel, while the Sport model pairs with 275/55R17 on a 17-inch wheel. Rim diameter is part of the tire size itself and must match exactly.
That makes wheel confirmation one of the most important checks on this vehicle. A tire built for a 16-inch rim cannot be mounted on a 17-inch wheel, and the reverse is also true. Looking at the wheel setup already on the vehicle is especially useful if the ML320 has had aftermarket wheels installed at some point.
Do all 2001 Mercedes-Benz Trucks ML320 sub-models use the same tire size?
No, the covered 2001 Mercedes-Benz Trucks ML320 sub-models do not use the same tire size. The Base model uses 255/65R16, and the Sport model uses 275/55R17. Both are radial fitments, but they belong to different wheel diameters and different sub-model configurations.
That difference means tire selection starts with identifying the actual version of the vehicle rather than comparing sizes by appearance alone. Even though the two fitments are fairly close in overall diameter, they are not the same specification. Matching the tire to the correct sub-model helps preserve proper wheel fitment, stance, and clearance.
Choosing the Right Tire
What should I consider when choosing a 255/65R16 tire for a 2001 Mercedes-Benz Trucks ML320?
Start by confirming that the ML320 is the Base model and that it still uses the correct 16-inch wheels. A 255/65R16 tire is the proper primary fitment for that configuration, so the goal is to stay with the correct size and radial construction rather than mixing it up with the Sport model’s 17-inch setup.
Once size is confirmed, focus on wheel condition, intended road use, and the overall condition of the suspension and steering components. An older luxury SUV can feel very different on worn bushings or tired shocks, so choosing the right tire works best when the rest of the chassis is also in sound condition.
What should I consider when choosing a 275/55R17 tire for a 2001 Mercedes-Benz Trucks ML320?
The first consideration is making sure the vehicle is a Sport model or is actually equipped with the proper 17-inch wheels. The 275/55R17 size is the primary radial fitment for the Sport configuration, and it should be selected because it matches that setup, not simply because it looks close to the Base model’s dimensions.
After that, inspect the wheels for damage, verify even suspension height, and make sure the existing setup has adequate clearance through the full steering range. That is especially helpful on an older SUV that may have seen wheel changes, alignment issues, or suspension wear, all of which can affect how the correct tire performs.
How do I choose between the available tire sizes for a 2001 Mercedes-Benz Trucks ML320?
Choosing between the two tire sizes for a 2001 Mercedes-Benz Trucks ML320 is not a matter of preference alone. The Base model uses 255/65R16, and the Sport model uses 275/55R17, so the correct choice depends on the sub-model and the wheel diameter actually on the vehicle. Both are radial sizes, but they are not interchangeable as primary fitments.
A quick check of the door-jamb information, wheel diameter, and current tire sidewall can usually clarify which setup the SUV has. That matters because selecting by appearance alone can create mounting problems or unwanted fitment issues. On vehicles that have been modified, the existing wheel and suspension package deserves a careful inspection first.
Restoration & Appearance
Does correct tire fitment matter for a 2001 Mercedes-Benz Trucks ML320 restoration?
Yes, correct tire fitment matters on a 2001 Mercedes-Benz Trucks ML320 restoration because the vehicle used two distinct size and wheel combinations. A Base model with 255/65R16 presents differently from a Sport model with 275/55R17, so choosing the proper fitment helps maintain the intended proportions and overall character of the specific configuration.
That does not mean every restored ML320 has to follow one visual formula, especially if wheels were changed long ago. Still, returning to the proper sub-model size is a strong starting point for a restoration-oriented project. Buyers focused on authenticity should also compare the current wheel setup against vehicle-specific historical references before finalizing tire choices.
How does tire fitment affect the appearance of a restored 2001 Mercedes-Benz Trucks ML320?
Tire fitment has a noticeable effect on the appearance of a restored 2001 Mercedes-Benz Trucks ML320 because sidewall height, section width, and wheel diameter all shape the SUV’s stance. The Base model’s 255/65R16 and the Sport model’s 275/55R17 create different visual presentations, even though both belong to the same model line.
Matching the tire size to the correct sub-model usually gives the most balanced result for a restoration-minded owner. It also helps avoid the mismatched look that can happen when a tire is chosen only by approximate diameter. Before committing to a set, it is worth confirming that the wheels and trim level still correspond to each other.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2001 Mercedes-Benz Trucks ML320?
Yes, modifications can affect tire fitment on a 2001 Mercedes-Benz Trucks ML320. Wheel changes, altered offsets, suspension lowering or lifting, and worn suspension parts can all influence how a 255/65R16 or 275/55R17 tire sits in the wheel opening and how much clearance it has during steering and suspension movement.
That is why an ML320 should be checked as it sits today rather than assumed to match its original configuration. Looking at wheel diameter, wheel width, and the space around the tire at full lock can help catch issues before new tires are installed. This is especially important on older SUVs that may have been modified over time.
What should I inspect before driving a 2001 Mercedes-Benz Trucks ML320 on new tires?
Before driving a 2001 Mercedes-Benz Trucks ML320 on new tires, inspect the wheels for bends or corrosion, verify proper inflation, and look over the suspension and steering components. It also helps to check alignment-related wear points, since uneven wear on the old tires may point to a condition that should be corrected first.
A careful walkaround after installation is equally useful. Turn the steering from lock to lock, listen for rubbing, and make sure the tires clear the body and suspension through normal movement. On a vehicle of this age, fresh tires can highlight existing chassis issues, so a short test drive and recheck are worthwhile.
How often should tires on a 2001 Mercedes-Benz Trucks ML320 be inspected?
Tires on a 2001 Mercedes-Benz Trucks ML320 should be inspected regularly, even if the SUV is driven only occasionally. Collector-age and low-use vehicles can develop problems that are easy to miss, including sidewall cracking, flat spotting, air loss, and age-related deterioration that does not always show up as obvious tread wear.
A quick visual check before driving and a more thorough inspection at routine service intervals is a sensible pattern. Pay close attention after the vehicle has been parked for long periods, because storage conditions can accelerate tire aging. Consistent pressure checks and early attention to cuts, bulges, or vibration help protect both ride quality and safety.
