The 2011 Mercedes-Benz Trucks R350 blends luxury touring character with the long-roof practicality that made the R-Class such an unusual entry in the Mercedes-Benz lineup. It appeals to owners who want comfort, space, and a more distinctive alternative to a conventional SUV. Tire selection on the 2011 Mercedes-Benz Trucks R350 starts with confirming whether the vehicle uses 255/50R19 or 265/45R20 radial tires. That matters because the two sizes use different 19-inch and 20-inch wheel diameters. Once the wheel setup is confirmed, the focus shifts to maintaining the right overall stance, proper clearance, and the intended road-going balance of the vehicle.
Which Tire Size Is Right for The 2011 Mercedes-Benz Trucks R350
The 2011 Mercedes-Benz Trucks R350 uses two primary tire sizes, and the right one depends on the exact sub-model and wheel diameter. Both are radial metric sizes, but one fits a 19-inch rim and the other fits a 20-inch rim, so confirming the actual wheel on the vehicle is the first step before comparing tire choices.
255/50R19 is a modern metric radial size in which 255 identifies the section width in millimeters, 50 is the aspect ratio, R denotes radial construction, and 19 is the wheel diameter in inches. On the 2011 Mercedes-Benz Trucks R350, this size suits vehicles equipped with the 19-inch wheel setup and is shared by both the 4Matic and Bluetec 4Matic sub-model coverage shown here. Its dimensions make it an important fitment reference for owners who want to preserve the vehicle’s intended proportions. Matching this size begins with verifying the wheel itself and then checking clearance on any vehicle that has been altered from stock.
265/45R20 is a modern metric radial size that uses a 265-millimeter section width, a 45-series profile, radial construction, and a 20-inch wheel diameter. On the 2011 Mercedes-Benz Trucks R350, it serves a different wheel package than 255/50R19, so it should be treated as a separate fitment path rather than a casual substitute. The slightly different sizing format reflects the larger wheel diameter and the lower-profile tire shape that goes with it. Choosing this size starts with confirming that the vehicle actually wears 20-inch wheels and that the current wheel and suspension setup still matches the intended fitment envelope.
Sub-model fitment matters on the 2011 Mercedes-Benz Trucks R350 because tire size is not the same across every covered configuration. The 4Matic appears with two possible radial sizes, while the Bluetec 4Matic uses a single size, so confirming the exact sub-model and wheel diameter helps narrow the choice quickly.
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2011 Mercedes-Benz Trucks R350 4Matic
The 2011 Mercedes-Benz Trucks R350 4Matic can use either of the two primary radial sizes covered here, which makes wheel confirmation especially important before replacing tires. Once the 19-inch or 20-inch setup is verified, the selection process becomes much more straightforward and centered on staying with the proper metric fitment.
The 2011 Mercedes-Benz Trucks R350 Bluetec 4Matic uses the 255/50R19 radial size in the fitment coverage shown here. That makes tire selection more direct, with the main job being to confirm that the vehicle still carries the correct 19-inch wheel setup and has not been changed to a different package.
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 2011 Mercedes-Benz Trucks R350 usually center on the correct tire size, the difference between the 19-inch and 20-inch fitments, and what to inspect before replacing tires on a luxury touring vehicle that may have seen wheel or suspension changes.
Tire Size & Fitment
What tire size fits a 2011 Mercedes-Benz Trucks R350?
The 2011 Mercedes-Benz Trucks R350 uses two primary tire sizes: 255/50R19 and 265/45R20. Both are radial metric sizes, but they are tied to different wheel diameters, so they are not simply alternate ways of writing the same fitment.
Choosing the right one starts with identifying the exact sub-model and then confirming whether the vehicle has 19-inch or 20-inch wheels. A Bluetec 4Matic follows the 255/50R19 fitment shown here, while an R350 4Matic may use either size depending on wheel setup. Any vehicle with replacement wheels should be checked carefully before purchasing tires.
What size rim does a 2011 Mercedes-Benz Trucks R350 use?
The 2011 Mercedes-Benz Trucks R350 uses either a 19-inch or 20-inch rim, depending on the tire size installed. A 255/50R19 tire fits a 19-inch wheel, while a 265/45R20 tire fits a 20-inch wheel.
Rim diameter is the first fitment point to confirm because a 19-inch tire cannot be mounted on a 20-inch wheel, and the reverse is also true. Checking the tire sidewall and the wheel itself is the quickest way to verify what is on the vehicle now. That matters even more if the R350 has had wheel-package changes since it left regular service.
Do all 2011 Mercedes-Benz Trucks R350 sub-models use the same tire size?
No, the covered sub-models do not all use the same tire size. The 2011 Mercedes-Benz Trucks R350 4Matic appears with both 255/50R19 and 265/45R20 fitments, while the 2011 Mercedes-Benz Trucks R350 Bluetec 4Matic uses 255/50R19.
That means the sub-model name alone may not settle the decision for every R350, especially on the 4Matic. The actual wheel diameter on the vehicle still needs to be verified before ordering replacement tires. Confirming both the sub-model and the current wheel setup helps avoid choosing a metric size that belongs to a different wheel package.
Choosing the Right Tire
What should I consider when choosing a 255/50R19 tire for a 2011 Mercedes-Benz Trucks R350?
Start with the basics: 255/50R19 is a radial metric fitment for a 19-inch wheel, and it is the size used on the covered Bluetec 4Matic as well as some R350 4Matic setups. Keeping the exact size matters because it preserves the intended relationship between width, profile, and rim diameter.
Beyond size, check that the vehicle still has its correct 19-inch wheel package and has not been changed to a different wheel diameter. It also helps to inspect how the current tires sit in the wheel openings and whether any suspension changes have affected clearance. On a touring-oriented vehicle like the R350, consistency across all four tires is especially important.
What should I consider when choosing a 265/45R20 tire for a 2011 Mercedes-Benz Trucks R350?
A 265/45R20 tire belongs on a 20-inch wheel and represents the larger-wheel fitment path covered for the 2011 Mercedes-Benz Trucks R350. The lower-profile shape compared with the 19-inch option makes correct sizing especially important, since the wheel diameter and tire sidewall work together as a package.
The key step is confirming that the vehicle actually uses the 20-inch setup rather than assuming that any R350 4Matic takes this size. It is also wise to look for signs of rubbing, uneven wear, or prior wheel changes before replacement. Those checks help keep the larger-wheel fitment aligned with the vehicle’s intended dimensions and everyday road use.
How do I choose between the available tire sizes for a 2011 Mercedes-Benz Trucks R350?
The choice is not between two interchangeable tire sizes. The 2011 Mercedes-Benz Trucks R350 uses 255/50R19 with a 19-inch wheel or 265/45R20 with a 20-inch wheel, and the correct size follows the wheel package on the vehicle.
A good selection process starts by reading the current tire sidewall, confirming the actual wheel diameter, and matching that setup to the sub-model. Owners of an R350 4Matic should be especially careful because both sizes appear in coverage for that trim. Once the wheel setup is settled, the goal is simply choosing the proper metric fitment for that configuration.
Restoration & Appearance
Does correct tire fitment matter for a 2011 Mercedes-Benz Trucks R350 restoration?
Yes, correct tire fitment matters because the 2011 Mercedes-Benz Trucks R350 relies on modern metric radial sizing that is closely tied to its wheel package and visual stance. Using the proper 255/50R19 or 265/45R20 size helps preserve the proportions intended for the vehicle.
Appearance is only part of the equation. Correct sizing also helps maintain sensible fender fill, wheel-to-tire balance, and clearance behavior on a vehicle that combines luxury and utility. Anyone restoring or refreshing an R350 should confirm the actual wheel diameter before replacing tires, especially if the vehicle has passed through multiple owners or received aftermarket wheels.
Which tire should I choose for a period-style 2011 Mercedes-Benz Trucks R350?
A period-style approach for a 2011 Mercedes-Benz Trucks R350 starts with staying in the correct primary tire size for the wheel package already on the vehicle. That means 255/50R19 on the 19-inch setup or 265/45R20 on the 20-inch setup, both in radial construction.
Because this is a modern luxury vehicle rather than an earlier collector car with bias-ply styling decisions, the most authentic-looking result usually comes from preserving the proper metric size and wheel diameter relationship. The main thing to avoid is treating the 19-inch and 20-inch fitments as cosmetic alternatives. Proper sizing does more for the vehicle’s appearance than chasing a mismatched wheel-and-tire combination.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2011 Mercedes-Benz Trucks R350?
Yes, modifications can affect tire fitment on a 2011 Mercedes-Benz Trucks R350. Wheel changes, suspension lowering, altered offsets, or non-original wheel diameters can change how a 255/50R19 or 265/45R20 tire sits in relation to the fender, steering components, and suspension.
A vehicle that still matches its original wheel package is much easier to fit correctly than one with unknown changes. Checking wheel diameter, tire size, and visible clearance at full steering lock is a smart step before replacement. That is especially important on an R350 4Matic, since both 19-inch and 20-inch fitments appear and prior modifications can blur that distinction.
What should I inspect before driving a 2011 Mercedes-Benz Trucks R350 on new tires?
Before road use, inspect inflation pressure, tread seating, valve stems, and the condition of the wheels themselves. It also helps to look for any signs of sidewall contact, uneven spacing in the wheel openings, or prior rubbing marks that could point to wheel or suspension issues.
A short check drive should include listening for rubbing and confirming that the steering turns freely from lock to lock. On a 2011 Mercedes-Benz Trucks R350, this is particularly worthwhile if the vehicle has been parked for long periods or has had wheel changes in the past. Catching a clearance or setup problem early is easier than discovering it under highway load.
How often should tires on a 2011 Mercedes-Benz Trucks R350 be inspected?
Tires on a 2011 Mercedes-Benz Trucks R350 should be inspected regularly, not just at replacement time. A visual check for uneven wear, cracking, punctures, bulges, and air loss is a good routine habit, especially on a vehicle that may alternate between frequent highway use and long parked periods.
Inspection is even more important when the vehicle uses larger wheel packages, since low-profile fitments can make wheel damage and impact-related issues easier to overlook. Checking pressure and overall condition before longer trips is a practical safeguard. Any R350 with older tires, uncertain service history, or aftermarket wheels deserves a closer look before returning to steady road use.
