The 2009 Mercedes-Benz Trucks R320 blends luxury people-mover comfort with the long-wheelbase road presence that made the R-Class stand apart from ordinary crossovers of its era. Buyers looking after one today are usually balancing everyday drivability with proper fitment for a vehicle that carries real weight and size. The 2009 Mercedes-Benz Trucks R320 uses a 255/50R19 radial tire, giving this page a very focused fitment story. That keeps the decision centered on selecting the right modern metric radial in the proper size rather than sorting through multiple original-type constructions. For restoration-minded owners and regular drivers alike, wheel confirmation, tire condition, and overall stance still matter before putting miles back on the vehicle.
Which Tire Size Is Right for The 2009 Mercedes-Benz Trucks R320
The 2009 Mercedes-Benz Trucks R320 uses one primary tire size: 255/50R19, and it is a radial fitment for a 19-inch rim. The R320 Bluetec uses this same size, so the main decision is not which primary size fits, but which 255/50R19 tire best matches the vehicle's wheel setup, road use, and overall condition.
A 255/50R19 size uses modern metric sizing: 255 is the nominal section width in millimeters, 50 is the aspect ratio, R identifies radial construction, and 19 is the wheel diameter in inches. On the 2009 Mercedes-Benz Trucks R320, that means a contemporary radial fitment suited to the vehicle's modern chassis and wheel package. Buyers evaluating this size should focus on staying with the correct sizing format and confirming the actual 19-inch wheel on the vehicle. That is especially important if the R320 has seen wheel changes, suspension modifications, or other updates since new.
Fitment is straightforward for the covered 2009 Mercedes-Benz Trucks R320 sub-model. The key point is confirming that the vehicle is the R320 Bluetec and that it still carries the correct 19-inch wheel setup for its 255/50R19 radial tire.
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2009 Mercedes-Benz Trucks R320 Bluetec
The 2009 Mercedes-Benz Trucks R320 Bluetec uses the same 255/50R19 radial fitment as the model core. Tire selection is therefore centered on choosing the right tire within that size and confirming that the current wheels and suspension have not altered the original fitment envelope.
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 2009 Mercedes-Benz Trucks R320 tire size, 19-inch rim fitment, choosing the right 255/50R19 radial, and the inspection steps that matter before putting a modern luxury crossover back into regular road use.
Tire Size & Fitment
What tire size fits a 2009 Mercedes-Benz Trucks R320?
The 2009 Mercedes-Benz Trucks R320 uses a 255/50R19 tire. That is the primary fitment for this model, and it is a radial tire size built for a 19-inch wheel.
That makes fitment relatively simple compared with vehicles that used multiple sizes by trim or wheel package. The next step is confirming that the R320 still has the correct 19-inch wheels and has not been changed to an aftermarket setup, since wheel width, offset, and suspension changes can affect how a 255/50R19 tire sits and clears.
What size rim does a 2009 Mercedes-Benz Trucks R320 use?
The 2009 Mercedes-Benz Trucks R320 uses a 19-inch rim with its 255/50R19 tire size. The tire code itself confirms that wheel diameter, with the final number identifying the rim size in inches.
A 19-inch diameter is only one part of proper wheel fitment, so it is still worth checking the actual wheel on the vehicle before replacing tires. Diameter, width, and wheel design all matter, especially on a heavier modern Mercedes platform where clearance to suspension components and bodywork should be verified if anything has been changed.
Does the 2009 Mercedes-Benz Trucks R320 Bluetec use the same tire size?
Yes. The 2009 Mercedes-Benz Trucks R320 Bluetec uses the same 255/50R19 radial tire size. That keeps the fitment consistent within the covered R320 sub-model range.
Even with shared sizing, it is still smart to inspect the vehicle before ordering replacement tires. A previous owner may have changed wheels, altered ride height, or mixed tire sizes over time, and that can complicate what looks like a straightforward fitment. Matching the correct 255/50R19 size to the actual wheel setup helps preserve proper stance, clearance, and road manners.
Choosing the Right Tire
What should I consider when choosing a 255/50R19 tire for a 2009 Mercedes-Benz Trucks R320?
Start with the correct size and construction: the 2009 Mercedes-Benz Trucks R320 uses a 255/50R19 radial on a 19-inch wheel. That means the first priority is staying within the proper size rather than experimenting with alternate fitments.
After that, focus on the condition and configuration of the vehicle itself. Check that the wheels are the intended diameter, inspect for any suspension changes, and make sure the old tires have not been masking clearance issues. On a vehicle like the R320, proper sizing supports ride quality, appearance, and predictable fitment better than guessing by visual similarity alone.
How do I choose between the available 255/50R19 tires for a 2009 Mercedes-Benz Trucks R320?
The best comparison starts with fitment basics rather than brand assumptions. Any tire under consideration should match the 255/50R19 size and be appropriate for the vehicle's 19-inch wheel setup before other differences enter the decision.
Once that baseline is covered, look at how the R320 is used. A vehicle that sees regular road miles may call for a different emphasis than one driven occasionally and stored for long periods. Tire age, wheel condition, and suspension wear should also be part of the decision, because a fresh set of correctly sized tires works best when the rest of the setup is equally sound.
Why is staying with the correct 255/50R19 size important on a 2009 Mercedes-Benz Trucks R320?
The 255/50R19 size is the primary fitment for the 2009 Mercedes-Benz Trucks R320, so it establishes the tire's basic relationship to the wheel diameter and the vehicle's intended proportions. Using the correct size helps keep the fitment grounded in the proper wheel package.
Moving away from that size without careful measurement can introduce unwanted changes in clearance, stance, or overall presentation. On a modern Mercedes chassis, even small departures from the proper fitment should be checked against the actual wheel width, suspension condition, and room inside the fenders before a substitute is considered for regular road use.
Restoration & Appearance
Which tire should I choose for a period-style 2009 Mercedes-Benz Trucks R320?
For a period-style 2009 Mercedes-Benz Trucks R320, the right starting point is the correct 255/50R19 radial size on a 19-inch wheel. Because this is a modern radial fitment, appearance is tied more to proper sizing and stance than to vintage construction choices.
A well-kept R320 looks most convincing when the tire fills the wheel opening correctly and matches the intended wheel package. Owners aiming for an authentic early-2000s presentation should avoid casual size substitutions that alter proportions, and should compare any replacement against the vehicle's current wheel setup so the finished look stays balanced and appropriate.
Does correct tire fitment matter for a 2009 Mercedes-Benz Trucks R320 restoration?
Yes, correct tire fitment matters because the 2009 Mercedes-Benz Trucks R320 was designed around a specific 255/50R19 radial size and 19-inch rim diameter. Even on a newer collector vehicle, the wrong tire size can change the way the vehicle sits and presents.
Restoration-minded buyers usually want the vehicle to look right as well as drive properly, and tire size plays a major part in that result. Keeping the fitment in the correct size range helps preserve the intended visual balance, while checking wheel condition and suspension height helps make sure the finished vehicle does not look altered or mismatched.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2009 Mercedes-Benz Trucks R320?
Yes. Modifications can affect tire fitment on a 2009 Mercedes-Benz Trucks R320 even when the tire size remains 255/50R19. Changes to wheel width, wheel offset, ride height, springs, or suspension components can alter clearance and the way the tire sits in the wheel opening.
That is why a modified R320 should be measured and inspected before replacement tires are chosen. A 19-inch wheel may still be present, but the rest of the setup could differ from stock enough to matter. Checking steering clearance, inner-fender space, and suspension travel helps prevent fitment surprises once the new tires are mounted.
What should I inspect before driving a 2009 Mercedes-Benz Trucks R320 on new tires?
Before driving a 2009 Mercedes-Benz Trucks R320 on new tires, inspect the wheels for damage, confirm the wheel diameter is still 19 inches, and make sure the replacement tires are the correct 255/50R19 size. It is also wise to look over valve stems and general wheel condition.
The rest of the vehicle deserves attention too. Check alignment-related wear patterns on the old tires, examine suspension components for looseness, and make sure nothing rubs at full steering lock. Proper tire pressure should be maintained from the start, since even a correctly sized radial cannot deliver stable road behavior if the surrounding chassis condition is neglected.
How often should tires on a 2009 Mercedes-Benz Trucks R320 be inspected?
Tires on a 2009 Mercedes-Benz Trucks R320 should be inspected regularly, not just when tread looks worn. On a vehicle that may see seasonal or occasional use, age, sidewall condition, and air retention can matter as much as mileage.
A quick visual check before driving and a more careful inspection at routine service intervals is a sensible approach. Look for cracking, bulges, cuts, irregular wear, and pressure loss, and keep an eye on how the 255/50R19 tires are sitting on the wheels. Collector-minded vehicles often age out their tires before they wear them out, so time and storage conditions deserve attention.
