The 2011 Mercedes-Benz S400 blends full-size S-Class luxury with hybrid-era efficiency, making tire fitment a little more involved than simply picking a single replacement size. Standard S400 Hybrid models use 255/45R18 radial tires, while Sport Package cars move to staggered 19-inch or 20-inch setups with narrower front and wider rear fitments. That means the key decision is identifying whether the car has the standard wheel package or a sport configuration, then choosing among blackwall, raised white letter, or redline options across several radial tire series. For owners balancing appearance, ride, and wheel fitment, getting the exact front and rear size right matters first.
Which Tire Size Is Right for The 2011 Mercedes-Benz S400
The 2011 Mercedes-Benz S400 uses five tire sizes, and the correct choice depends on the exact sub-model and wheel package. Standard S400 Hybrid models use an 18-inch setup, while Sport Package cars use staggered front and rear fitments on either 19-inch or 20-inch rims. Before choosing a tire, confirm whether the car is standard or Sport Package and verify the actual wheel diameter on the vehicle.
255/45R18 is a metric radial size in which 255 is the section width in millimeters, 45 is the aspect ratio, R identifies radial construction, and 18 is the rim diameter in inches. On the 2011 Mercedes-Benz S400, this size belongs to the standard S400 Hybrid rather than the Sport Package staggered setup. Available choices include BFGoodrich, Nitto, and Pro-Trac products, with blackwall, RWL, and redline sidewall treatments depending on the series. This size makes sense when the car remains on its 18-inch wheel package and the goal is to match that original fitment layout.
255/35R20 is a metric radial size with a 255-millimeter section width, a 35-series profile, and a 20-inch rim diameter. On the 2011 Mercedes-Benz S400, it serves as a front fitment for the S400 Hybrid w/Sport Pkg. when equipped with the 20-inch setup. Tire choices include BFGoodrich, Nitto, and Pro-Trac offerings in several radial series, with blackwall, RWL, and redline sidewall styles available. This size should be evaluated as part of a matched sport front-and-rear arrangement rather than as a universal fitment across all S400 configurations.
255/40R19 is a metric radial size where 255 gives the section width in millimeters, 40 is the aspect ratio, and 19 is the wheel diameter in inches. On the 2011 Mercedes-Benz S400, this is the front tire size for the S400 Hybrid w/Sport Pkg. when fitted with the 19-inch sport setup. BFGoodrich and Pro-Trac options are available here, including blackwall, RWL, and redline presentations across multiple tire series. This size is the right starting point when the car has 19-inch sport wheels and needs the proper front fitment to match the rear tire size.
275/35R20 is a wider metric radial size that uses a 275-millimeter section width, a 35-series profile, and a 20-inch rim diameter. For the 2011 Mercedes-Benz S400, it is the rear tire size paired with the 255/35R20 front on S400 Hybrid w/Sport Pkg. models using the 20-inch staggered arrangement. Available tires include blackwall choices from BFGoodrich and Nitto, along with Pro-Trac RWL and redline alternatives for a more distinctive sidewall look. This rear size needs to be chosen with the matching front size and actual wheel package in mind, not as a stand-alone substitution.
275/40R19 is a metric radial size with a 275-millimeter section width, a 40-series sidewall profile, and a 19-inch rim diameter. On the 2011 Mercedes-Benz S400, it is the rear fitment for the S400 Hybrid w/Sport Pkg. when the car is equipped with the 19-inch staggered setup. BFGoodrich and Nitto offerings are available in this size, largely in blackwall form across multiple performance-oriented radial series. This is the size to evaluate when confirming a 19-inch sport rear wheel and maintaining the intended front-to-rear sizing relationship of that package.
Tire fitment on the 2011 Mercedes-Benz S400 varies by sub-model and wheel package rather than following one universal size. Checking whether the car is a standard Hybrid or a Sport Package front or rear fitment is the first step, especially because 18-inch, 19-inch, and 20-inch rims are all used here.
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2011 Mercedes-Benz S400 Hybrid
The 2011 Mercedes-Benz S400 Hybrid uses a single 255/45R18 radial tire size, making fitment more straightforward than the staggered sport configurations. Tire selection then comes down to choosing the right radial product, sidewall presentation, and wheel-width compatibility for the car’s 18-inch setup.
The 2011 Mercedes-Benz S400 Hybrid w/Sport Pkg. Front uses either 255/35R20 or 255/40R19 depending on whether the car has the 20-inch or 19-inch sport wheel package. That makes wheel-diameter confirmation essential before selecting a front tire or trying to match an existing rear setup.
The 2011 Mercedes-Benz S400 Hybrid w/Sport Pkg. Rear uses either 275/35R20 or 275/40R19, both of which are wider rear sport fitments. Choosing correctly means confirming the rear wheel diameter first and keeping the front-and-rear staggered combination matched to the car’s actual sport package setup.
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.
Best 2011 Mercedes-Benz S400 Tires for Sale
Available 2011 Mercedes-Benz S400 tires are all radial, with choices from BFGoodrich, Nitto, and Pro-Trac across g-Force, NT555 G2, Phenom T/A, and Street Pro III series. Depending on size, buyers can compare blackwall, RWL, and redline sidewall treatments along with different rim-width specifications.
Tire questions for the 2011 Mercedes-Benz S400 usually come down to identifying the exact wheel package, confirming front versus rear sport fitment, and choosing between available radial tire series and sidewall styles. The questions below focus on size, rim fitment, product selection, and practical road-use checks.
Tire Size & Fitment
What tire size fits a 2011 Mercedes-Benz S400?
The 2011 Mercedes-Benz S400 uses several radial tire sizes rather than one universal fitment. The standard S400 Hybrid uses 255/45R18, while Sport Package models use staggered front and rear sizes: 255/40R19 with 275/40R19 for a 19-inch setup, or 255/35R20 with 275/35R20 for a 20-inch setup.
The practical first step is identifying whether the car is the standard Hybrid or a Sport Package configuration, then verifying the actual wheel diameter on the vehicle. On Sport Package cars, front and rear tires are different sizes, so replacement should follow the correct pair rather than treating the car like a square setup.
What size rim does a 2011 Mercedes-Benz S400 use?
A 2011 Mercedes-Benz S400 can use 18-inch, 19-inch, or 20-inch rims depending on the configuration. The standard S400 Hybrid uses an 18-inch rim with 255/45R18 tires, while Sport Package cars use either a 19-inch staggered setup with 255/40R19 front and 275/40R19 rear or a 20-inch staggered setup with 255/35R20 front and 275/35R20 rear.
Wheel diameter should be confirmed on the car before choosing tires, especially if the vehicle has changed hands or has aftermarket wheels. Matching the tire to the actual rim size is essential, and Sport Package models also require attention to front-versus-rear wheel position because the fitment is staggered.
Why does the 2011 Mercedes-Benz S400 have more than one tire size?
The 2011 Mercedes-Benz S400 has more than one tire size because fitment changes with the wheel package and, on Sport Package cars, with front versus rear position. Standard Hybrid models use a single 255/45R18 size, while sport-equipped cars use wider rear tires and can be fitted with either 19-inch or 20-inch staggered combinations.
That means tire selection starts with the car’s exact setup, not simply the model name. Checking the existing wheel diameter and whether the tire is mounted on the front or rear axle helps prevent mismatched replacements, especially on vehicles that may have had wheels changed during previous ownership.
Choosing the Right Tire
What should I consider when choosing a tire for a 2011 Mercedes-Benz S400?
Start with the exact size and wheel position your 2011 Mercedes-Benz S400 requires. Standard Hybrid models use 255/45R18, while Sport Package cars use staggered front and rear sizes in either 19-inch or 20-inch form, so the first priority is matching the tire to the vehicle’s actual wheel setup.
After size is confirmed, compare construction details such as rim-width compatibility, sidewall style, tire series, and load figures where they are stated. A blackwall tire may suit a restrained appearance, while RWL or redline options create a more pronounced look, so the right choice depends on how the car is used and presented.
What sidewall styles are available for 2011 Mercedes-Benz S400 tires?
Sidewall styles for the 2011 Mercedes-Benz S400 include blackwall, RWL, and redline depending on tire size and series. Blackwall choices appear across BFGoodrich and Nitto offerings, while Pro-Trac Street Pro III adds RWL and redline versions in several of the applicable S400 sizes.
Sidewall style does not change the basic size requirement, but it can change the character of the finished look quite a bit. Buyers trying to keep a subdued modern appearance often stay with blackwall, while those wanting a stronger custom or performance-inspired presentation may prefer raised white letter or redline styling.
What brands offer tires for the 2011 Mercedes-Benz S400?
Tires for the 2011 Mercedes-Benz S400 are available from BFGoodrich, Nitto, and Pro-Trac. Depending on size, the available series include BFGoodrich g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, Nitto NT555 G2, and Pro-Trac Street Pro III.
Brand choice is best considered after size and wheel position are settled, especially on Sport Package cars with different front and rear fitments. From there, compare the series and sidewall treatments that matter most to you, along with rim-width compatibility and any stated load information for the exact tire under consideration.
Restoration & Appearance
Which tire should I choose for a period-style 2011 Mercedes-Benz S400?
A period-style approach for a 2011 Mercedes-Benz S400 usually begins with keeping the correct size and wheel-package layout intact. That means 255/45R18 for a standard Hybrid, or the proper staggered 19-inch or 20-inch front-and-rear sizes for a Sport Package car, then selecting a radial tire whose appearance suits the car’s presentation.
Blackwall tires maintain the most understated modern luxury look, while RWL or redline versions create a more custom visual statement. Since exact originality can depend on the car’s original wheel and trim configuration, buyers focused on strict authenticity should compare the finished choice with marque-specific photos, records, or club guidance.
How does tire construction affect the appearance of a restored 2011 Mercedes-Benz S400?
Construction is straightforward on the 2011 Mercedes-Benz S400 because the fitments here are radial throughout. That means the visual difference comes less from bias-ply versus radial choice and more from the tire’s sidewall treatment, series styling, and whether the car is on standard 18-inch wheels or a staggered 19-inch or 20-inch sport package.
A restored or carefully preserved S400 can look markedly different depending on whether it wears blackwall tires or more expressive RWL or redline sidewalls. Keeping the proper front-and-rear relationship on Sport Package cars also matters visually, since mismatched widths or rim diameters can quickly upset the balanced stance of the car.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2011 Mercedes-Benz S400?
Yes, modifications can affect tire fitment on a 2011 Mercedes-Benz S400, especially because this model already uses multiple wheel diameters and staggered sport combinations. Aftermarket wheels, suspension changes, altered ride height, or non-original front-and-rear wheel widths can all change the fitment requirements even when the car still carries an S400 badge.
The safest approach is to measure the actual wheel diameter and width on the car and compare them with the tire’s stated rim-width range before replacement. Clearance at the fender, suspension, and steering components should also be checked, particularly if the car no longer retains its original wheel and suspension setup.
What should I inspect before driving a 2011 Mercedes-Benz S400 on new tires?
Before driving a 2011 Mercedes-Benz S400 on new tires, inspect the wheel condition, verify that the correct front or rear size has been installed, and confirm proper inflation. It is also wise to look over valve stems, check for any obvious mounting damage, and make sure each tire seats correctly on the rim.
A quick walk-around after installation helps catch problems early, especially on a staggered setup where front and rear sizes differ. During the first drives, pay attention to rubbing, vibration, or pulling, since those signs can point to a wheel-position mix-up, clearance issue, or a need for balancing and alignment attention.
How often should tires on a 2011 Mercedes-Benz S400 be inspected?
Tires on a 2011 Mercedes-Benz S400 should be inspected regularly, even if the car is driven only occasionally. Collector-minded or lightly used luxury cars can age out their tires before they wear them out, so tread depth alone is not enough; sidewall cracking, cuts, bulges, and slow air loss deserve equal attention.
Monthly pressure checks are a good habit, and a closer visual inspection before longer trips is especially important on older tires. Cars with staggered sport fitments also benefit from checking front and rear tires separately, since they are different sizes and may not wear or respond to alignment changes the same way.
