The 2006 Mercedes-Benz Trucks R350 blends wagon versatility, luxury-car road manners, and the long-roof practicality that made the R-Class stand apart in the mid-2000s. Buyers looking at one today are often balancing everyday drivability with the need to keep the vehicle's stance and fitment properly sorted. Tire selection centers on three radial sizes: 235/65R17, 255/55R18, and 255/50R19, with fitment changing by wheel package and sub-model. That makes wheel diameter the first checkpoint, especially because the 4Matic and 4Matic w/AMG Sport Pkg. do not share the same setup. Once the correct size is confirmed, the focus shifts to maintaining the right overall profile, handling balance, and clearance.
Which Tire Size Is Right for The 2006 Mercedes-Benz Trucks R350
The 2006 Mercedes-Benz Trucks R350 uses three primary tire sizes, and the right one depends on the exact sub-model and wheel diameter. All three are radial metric sizes, but they are tied to 17-inch, 18-inch, or 19-inch rims. Confirming the actual wheel size on the vehicle is the first step, then matching that size to the correct R350 configuration before comparing tire choices.
235/65R17 is a metric radial size with a 235 millimeter section width, a 65-series aspect ratio, and fitment for a 17-inch rim. On the 2006 Mercedes-Benz Trucks R350, it is one of the primary radial sizes used on the 4Matic configuration. Its taller-profile metric format helps preserve the intended overall tire height for that wheel package. This size is the right place to start when the vehicle carries 17-inch wheels, but the actual wheel setup should still be confirmed before replacement.
255/55R18 is a metric radial size that uses a 255 millimeter section width, a 55-series aspect ratio, and an 18-inch rim. It is another primary fitment for the 2006 Mercedes-Benz Trucks R350 4Matic, giving that sub-model a wider tire on a larger wheel diameter than the 17-inch setup. The size keeps a very similar overall tire height while changing wheel and sidewall proportions. It should be evaluated when the vehicle is equipped with 18-inch wheels and the buyer wants to stay with the correct factory-style fitment range.
255/50R19 is a metric radial size with a 255 millimeter section width, a 50-series aspect ratio, and fitment for a 19-inch rim. On the 2006 Mercedes-Benz Trucks R350, this size belongs to the 4Matic w/AMG Sport Pkg. setup, where the larger wheel diameter changes the tire's profile while keeping the overall height close to the other R350 sizes. That makes it visually and functionally tied to the AMG Sport package wheel arrangement. Buyers should confirm that the vehicle still carries its 19-inch wheels before selecting this size.
Sub-model fitment matters on the 2006 Mercedes-Benz Trucks R350 because the covered configurations do not all use the same tire size. Identifying whether the vehicle is a standard 4Matic or a 4Matic w/AMG Sport Pkg. is the key step before matching tires to the wheel diameter already on the vehicle.
1
2006 Mercedes-Benz Trucks R350 4Matic
The 2006 Mercedes-Benz Trucks R350 4Matic uses either a 17-inch or 18-inch radial tire setup, so this version requires a close look at the wheels currently installed. Tire selection starts with confirming whether the vehicle is on 235/65R17 or 255/55R18, then choosing a replacement that preserves the intended fitment and road manners.
2006 Mercedes-Benz Trucks R350 4Matic w/AMG Sport Pkg.
The 2006 Mercedes-Benz Trucks R350 4Matic w/AMG Sport Pkg. uses the 255/50R19 radial size, tying this sub-model to a 19-inch wheel package. That makes tire selection more straightforward, but it is still worth confirming that the vehicle has retained its AMG-package wheel setup and has not been changed to a different diameter.
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 exact tire sizes used on the 2006 Mercedes-Benz Trucks R350, how sub-model and wheel package affect fitment, and what to inspect before putting the vehicle back into regular road use.
Tire Size & Fitment
What tire size fits a 2006 Mercedes-Benz Trucks R350?
The 2006 Mercedes-Benz Trucks R350 uses three primary tire sizes: 235/65R17, 255/55R18, and 255/50R19. All three are radial metric sizes, but they do not apply universally across every R350 configuration, because wheel package and sub-model determine which one belongs on the vehicle.
The practical step is to confirm both the exact sub-model and the wheel diameter already on the vehicle. A standard 4Matic can use either the 17-inch or 18-inch setup, while the 4Matic w/AMG Sport Pkg. uses the 19-inch size. Checking the sidewall markings on the current tires and verifying wheel diameter helps prevent choosing the wrong fitment.
What size rim does a 2006 Mercedes-Benz Trucks R350 use?
A 2006 Mercedes-Benz Trucks R350 can use 17-inch, 18-inch, or 19-inch rims, depending on the exact configuration. The 235/65R17 size fits a 17-inch rim, 255/55R18 fits an 18-inch rim, and 255/50R19 fits a 19-inch rim.
Rim diameter should be confirmed before anything else, because each tire size is built around a specific wheel diameter. Even though the three R350 tire sizes stay very close in overall height, the tires are not interchangeable across different rim sizes. Checking the wheel itself or the current tire sidewall is the fastest way to match the vehicle to the correct replacement size.
Do all 2006 Mercedes-Benz Trucks R350 sub-models use the same tire size?
No. The 2006 Mercedes-Benz Trucks R350 4Matic can use either 235/65R17 or 255/55R18, while the 2006 Mercedes-Benz Trucks R350 4Matic w/AMG Sport Pkg. uses 255/50R19. That means sub-model identification matters before selecting replacement tires.
This is especially important on used vehicles, where wheels may have been changed over time. A buyer should verify the trim level and then confirm the actual wheel diameter currently installed. That approach helps avoid ordering a tire that matches one R350 setup on paper but does not match the wheels or intended fitment of the vehicle in front of you.
Choosing the Right Tire
What should I consider when choosing a tire for a 2006 Mercedes-Benz Trucks R350?
Start with the correct primary size for the vehicle: 235/65R17, 255/55R18, or 255/50R19, depending on sub-model and wheel package. Because all three are radial metric sizes with different rim diameters, correct fitment comes before any other buying decision.
After the size is confirmed, compare the tire's intended role with how the R350 is used. A vehicle kept close to its original configuration benefits from staying with the proper diameter and profile relationship, while any modified example should be checked carefully for wheel width, clearance, and suspension changes. Matching the tire to the actual wheel setup keeps selection grounded in fitment rather than guesswork.
How do I choose between the available tire sizes for a 2006 Mercedes-Benz Trucks R350?
You do not choose among the three sizes by preference alone, because each size belongs to a particular wheel diameter and R350 configuration. The decision starts with identifying whether the vehicle is a 4Matic or a 4Matic w/AMG Sport Pkg., then confirming whether it has 17-inch, 18-inch, or 19-inch wheels.
Once that is established, the correct tire size follows the wheel package rather than personal styling preference. Since the three sizes have nearly the same overall diameter, the main difference is how width and sidewall proportion are paired with the wheel. That is why wheel confirmation matters so much on an older vehicle that may no longer be wearing its original wheels.
Why does the 2006 Mercedes-Benz Trucks R350 have more than one tire size?
The 2006 Mercedes-Benz Trucks R350 has more than one tire size because different wheel packages were used across its sub-models. The 4Matic configuration could be fitted with either 235/65R17 or 255/55R18, while the 4Matic w/AMG Sport Pkg. used 255/50R19.
Even though the sizes differ, their overall diameters stay very close, which helps preserve the vehicle's general ride height and fitment balance across the various wheel options. For a replacement purchase, that means the buyer should treat wheel diameter as the key dividing line. Once the actual wheels are confirmed, selecting the matching tire size becomes much more straightforward.
Restoration & Appearance
Does correct tire fitment matter for a 2006 Mercedes-Benz Trucks R350 restoration?
Yes. Correct tire fitment matters on a 2006 Mercedes-Benz Trucks R350 because the vehicle was built around specific wheel-and-tire combinations, not a single universal size. Staying with the proper 17-inch, 18-inch, or 19-inch fitment helps preserve the intended stance, wheel-to-tire proportion, and overall appearance of the R350.
That does not mean every restored example must follow one exact visual formula, especially if the vehicle has been altered over time. It does mean that returning the R350 to the right tire size for its sub-model and wheel package is the cleanest starting point. For originality questions beyond size alone, marque-specific references and build documentation remain the safest guide.
How does tire construction affect the appearance of a restored 2006 Mercedes-Benz Trucks R350?
On a 2006 Mercedes-Benz Trucks R350, tire construction is straightforward because the primary fitments are all radial. That means appearance changes come less from bias-ply versus radial differences and more from choosing the correct size profile for the wheel diameter installed on the vehicle.
Using the proper 235/65R17, 255/55R18, or 255/50R19 keeps the sidewall height and wheel relationship in the range intended for that R350 setup. A mismatch in wheel diameter or tire profile can change the vehicle's visual balance even if the tire physically mounts. For a restoration-minded owner, staying true to the wheel package is usually the most important appearance decision.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2006 Mercedes-Benz Trucks R350?
Yes. Modifications can affect tire fitment on a 2006 Mercedes-Benz Trucks R350, especially if the vehicle has aftermarket wheels, altered ride height, suspension changes, or body modifications. Those changes can influence which of the original tire sizes still makes sense and whether normal steering and fender clearance are preserved.
A modified R350 should be checked at the wheel, not assumed to match original specifications. Confirm wheel diameter first, then look at wheel width, clearance at full steering lock, and space around the fenders and suspension. That is particularly important when moving between the stock 17-inch, 18-inch, and 19-inch fitment families or when the vehicle's stance has been changed.
What should I inspect before driving a 2006 Mercedes-Benz Trucks R350 on new tires?
Before driving a 2006 Mercedes-Benz Trucks R350 on new tires, inspect the wheels for damage, confirm the tire size matches the wheel diameter, and check that the tires are seated and inflated properly. It is also smart to look over the suspension and steering components so worn parts do not disguise themselves as tire issues.
A short road test should include checking for vibration, pull, rubbing, or any sign that the tires contact the body or suspension through turns and over bumps. The R350's different wheel packages make this especially worthwhile after a tire change. Catching fitment or condition issues early helps protect both the new tires and the vehicle itself.
How often should tires on a 2006 Mercedes-Benz Trucks R350 be inspected?
Tires on a 2006 Mercedes-Benz Trucks R350 should be inspected regularly, not only when tread looks worn. Pressure, visible cracking, cuts, bulges, uneven wear, and signs of slow air loss are all worth checking, especially on a vehicle that may spend long periods parked between drives.
Routine inspection is particularly important because the R350 uses several different wheel-and-tire combinations, and replacement history may not always be obvious on a used vehicle. Looking at the sidewall size markings during each inspection also confirms that the tires still match the wheels fitted to the vehicle. Consistent checks help catch aging and fitment problems before they become road-use problems.
