The 2017 Mercedes-Benz S550 sits at the top of Mercedes-Benz luxury touring in an era when the S-Class blended big-car comfort, advanced electronics, and substantial V8 performance. Tire selection on this car is more configuration-specific than it first appears, because the S550 can use 18-, 19-, or 20-inch radial fitments, and some versions use a staggered front-and-rear setup rather than a single all-around size. Available choices also vary by tire series and sidewall treatment, with blackwall, raised white letter, and redline options depending on size. The right match starts with confirming the exact sub-model, wheel diameter, and whether the car is running a square or staggered setup.
Which Tire Size Is Right for The 2017 Mercedes-Benz S550
Five primary tire sizes apply to the 2017 Mercedes-Benz S550, and the correct choice depends on the exact sub-model and wheel setup. Some cars use a single 245/50R18 fitment, while others use staggered front-and-rear combinations on either 19-inch or 20-inch rims. The first step is confirming whether the car is a sedan, coupe, or cabriolet configuration and then checking the actual wheel diameter before comparing tire options.
Fit(s): 4Matic Coupe & Cabriolet Front, 4Matic Sedan Front, and Base Front
Construction: Radial|Rim: 20 in
245/40R20 is a modern metric radial size with a 245-millimeter section width, a 40-series aspect ratio, radial construction, and a 20-inch rim diameter. On the 2017 Mercedes-Benz S550, this size serves as a front fitment in staggered 20-inch applications, so it should be matched to the correct rear tire rather than treated as a universal all-around choice. Available options include BFGoodrich, Nitto, and Pro-Trac, with blackwall, raised white letter, and redline presentations depending on the tire series. This size is the right place to focus if the car already wears 20-inch front wheels and appearance choice matters alongside fitment.
Fit(s): 4Matic Coupe & Cabriolet Front, 4Matic Sedan Front, and Base Front
Construction: Radial|Rim: 19 in
245/45R19 is a modern metric radial size that combines a 245-millimeter section width with a 45-series profile on a 19-inch rim. For the 2017 Mercedes-Benz S550, it appears as a front tire size in staggered 19-inch setups, making it part of a front-and-rear pairing rather than a one-size solution for every configuration. BFGoodrich and Nitto options are available in this size, primarily in blackwall form and across several g-Force and NT555 G2 series choices. It is the size to evaluate when the car has 19-inch front wheels and needs a matched staggered setup.
Fit(s): 4Matic Coupe & Cabriolet Rear, 4Matic Sedan Rear, and Base Rear
Construction: Radial|Rim: 20 in
275/35R20 is a modern metric radial size with a wider 275-millimeter section width, a lower 35-series profile, and a 20-inch rim diameter. On the 2017 Mercedes-Benz S550, this size is used at the rear in staggered 20-inch applications, where it complements a narrower front tire and supports the intended front-to-rear size relationship. Product choices include BFGoodrich, Nitto, and Pro-Trac, with blackwall, raised white letter, and redline sidewall treatments available in this fitment. This size matters when the car carries 20-inch rear wheels and the goal is to preserve the correct staggered layout.
Fit(s): 4Matic Coupe & Cabriolet Rear, 4Matic Sedan Rear, and Base Rear
Construction: Radial|Rim: 19 in
275/40R19 is a modern metric radial size that pairs a 275-millimeter section width with a 40-series profile on a 19-inch rim. For the 2017 Mercedes-Benz S550, it serves as the rear tire in staggered 19-inch configurations, so it belongs with the corresponding 19-inch front size rather than being selected by width alone. BFGoodrich and Nitto choices are available here, including multiple g-Force series and blackwall sidewall styling. This is the rear fitment to compare when the car runs 19-inch staggered wheels and the buyer wants to sort through different series within the correct size.
245/50R18 is a modern metric radial size with a 245-millimeter section width, a 50-series profile, and an 18-inch rim diameter. On the 2017 Mercedes-Benz S550, this size is used as a single all-around fitment on certain sedan and base configurations rather than as part of a staggered front-and-rear package. Current choices in this size center on Pro-Trac Street Pro III tires with raised white letter or redline sidewall treatments. It is the size to review when the car wears 18-inch wheels and a square four-corner setup is the starting point.
Sub-model fitment on the 2017 Mercedes-Benz S550 is not one-size-fits-all, because some versions use a single 18-inch tire size while others use staggered 19-inch or 20-inch front-and-rear combinations. Checking the exact sub-model and wheel setup prevents mixing a square sedan fitment with the wider rear sizing used on staggered applications.
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2017 Mercedes-Benz S550 4Matic Coupe & Cabriolet Front
The 2017 Mercedes-Benz S550 4Matic Coupe & Cabriolet Front uses either 245/40R20 or 245/45R19 radial sizing as part of a staggered setup. Tire selection here means matching the front size to the car's actual wheel diameter and pairing it correctly with the corresponding wider rear fitment.
2017 Mercedes-Benz S550 4Matic Coupe & Cabriolet Rear
The 2017 Mercedes-Benz S550 4Matic Coupe & Cabriolet Rear uses either 275/35R20 or 275/40R19 radial sizing. That makes rear-tire selection a wheel-diameter and staggered-fitment decision, with the correct choice tied to the front size already on the car.
The 2017 Mercedes-Benz S550 4Matic Sedan uses a 245/50R18 radial tire in its single-size configuration. For this setup, the focus shifts away from front-versus-rear sizing and toward choosing the preferred sidewall style within the correct 18-inch fitment.
The 2017 Mercedes-Benz S550 4Matic Sedan Front uses either 245/40R20 or 245/45R19 in staggered radial applications. The key is confirming whether the sedan has 19-inch or 20-inch wheels before comparing brands, series, and sidewall presentation.
The 2017 Mercedes-Benz S550 4Matic Sedan Rear uses either 275/35R20 or 275/40R19 as the wider rear component of a staggered setup. Choosing correctly means matching the rear tire to the car's front fitment and verifying that the wheel diameter is the same front to rear within that package.
The 2017 Mercedes-Benz S550 Base uses a 245/50R18 radial tire in its non-staggered arrangement. That simplifies size selection, leaving wheel confirmation and sidewall preference as the main buying decisions.
The 2017 Mercedes-Benz S550 Base Front uses either 245/40R20 or 245/45R19 radial sizing on staggered applications. The practical step is confirming whether the car is on 19-inch or 20-inch front wheels and then selecting a tire that matches the intended rear pairing.
The 2017 Mercedes-Benz S550 Base Rear uses either 275/35R20 or 275/40R19 radial sizing in staggered form. Rear-tire selection depends on keeping the proper front-to-rear combination together rather than choosing by width or appearance alone.
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 2017 Mercedes-Benz S550 Tires for Sale
Available 2017 Mercedes-Benz S550 tire choices center on radial fitments from BFGoodrich, Nitto, and Pro-Trac. Depending on size, buyers can compare g-Force and NT555 G2 series options as well as blackwall, raised white letter, and redline sidewall treatments.
The most common 2017 Mercedes-Benz S550 tire questions center on identifying the correct size by sub-model, understanding staggered front-and-rear fitment, and comparing available radial tire series, sidewall styles, and wheel-diameter requirements.
Tire Size & Fitment
What tire size fits a 2017 Mercedes-Benz S550?
The 2017 Mercedes-Benz S550 uses five primary radial tire sizes: 245/40R20, 245/45R19, 275/35R20, 275/40R19, and 245/50R18. The correct size depends on the exact S550 configuration, because some cars use a single 18-inch size at all four corners while others use staggered 19-inch or 20-inch front-and-rear combinations.
The practical first step is confirming whether the car is a square setup or a staggered one, then checking the actual wheel diameter on the vehicle. Front and rear tires should not be selected independently on staggered applications, and a car that has been changed to aftermarket wheels should be measured rather than assumed.
What size rim does a 2017 Mercedes-Benz S550 use?
A 2017 Mercedes-Benz S550 can use 18-inch, 19-inch, or 20-inch rims depending on the configuration. The 245/50R18 size uses an 18-inch rim, the 245/45R19 and 275/40R19 sizes use 19-inch rims, and the 245/40R20 and 275/35R20 sizes use 20-inch rims.
Rim diameter is the first fitment check because a tire must match the wheel's bead seat diameter exactly. Once diameter is confirmed, the next step is making sure the car uses either the correct single-size arrangement or the correct front-and-rear staggered pairing for that wheel package.
Why does the 2017 Mercedes-Benz S550 have more than one tire size?
More than one tire size applies because the 2017 Mercedes-Benz S550 was offered in different configurations, including single-size 18-inch setups and staggered 19-inch or 20-inch arrangements. In the staggered versions, the front uses a narrower 245-section tire while the rear uses a wider 275-section tire.
That means the correct answer depends on more than just year and model name. Identifying the exact sub-model and checking the wheels already on the car will prevent mixing 18-inch square fitment with 19-inch or 20-inch staggered combinations that belong to a different setup.
Choosing the Right Tire
What should I consider when choosing a tire for a 2017 Mercedes-Benz S550?
Start with the exact tire size and wheel diameter used on the car, then confirm whether the S550 is running a square setup or a staggered front-and-rear arrangement. Once size is settled, compare radial tire series, sidewall style, and any product details such as rim-width compatibility or load figures when they are available.
A buyer choosing 245/50R18 may be deciding mainly between appearance treatments, while a staggered 19-inch or 20-inch car needs the correct front and rear sizes matched as a set. The most useful approach is balancing proper fitment, the visual style wanted on the car, and the way the vehicle will actually be driven.
What sidewall styles are available for 2017 Mercedes-Benz S550 tires?
Sidewall style depends on the tire size. Blackwall choices are available in the 19-inch and 20-inch BFGoodrich and Nitto offerings, while Pro-Trac options add raised white letter and redline treatments in 245/40R20, 275/35R20, and 245/50R18.
That means sidewall appearance is part of the buying decision, especially if the car is being tailored toward a more understated or more custom presentation. Appearance should still come after confirming the correct size, because the right sidewall style in the wrong wheel diameter or wrong staggered position is still the wrong fitment.
What brands offer tires for the 2017 Mercedes-Benz S550?
Tires for the 2017 Mercedes-Benz S550 are available from BFGoodrich, Nitto, and Pro-Trac, depending on size. BFGoodrich appears across multiple g-Force series, Nitto offers NT555 G2 choices in several staggered sizes, and Pro-Trac covers certain fitments with Street Pro III tires and more appearance-focused sidewall options.
Brand alone should not decide the purchase. A better comparison looks at whether the brand offers the exact front or rear size needed, whether the sidewall style suits the car, and whether the product's wheel-width or load details align with the actual wheel and intended use.
Restoration & Appearance
Which tire should I choose for a period-style 2017 Mercedes-Benz S550?
A period-style approach for a 2017 Mercedes-Benz S550 still begins with the correct modern radial size for the car's actual wheel package. After that, the look can be tailored through the available tire series and sidewall treatments, especially in sizes where blackwall, raised white letter, or redline options exist.
The right visual choice depends on whether the goal is a restrained luxury presentation or a more personalized custom look. For owners concerned with exact as-delivered appearance, the safest path is to verify original wheel and tire details through marque-specific documentation before settling on a sidewall treatment.
How does tire construction affect the appearance of a restored 2017 Mercedes-Benz S550?
Tire construction is straightforward on the 2017 Mercedes-Benz S550 because the primary fitments are radial across all listed sizes. That means the visual differences come less from bias-ply versus radial construction and more from profile, wheel diameter, and sidewall treatment within the correct radial size.
An 18-inch square setup gives the car a different stance than a 19-inch or 20-inch staggered arrangement, even before brand or series is considered. Keeping the proper size relationship front to rear is just as important to the final look as choosing between blackwall, raised white letter, or redline styling.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2017 Mercedes-Benz S550?
Yes, modifications can change what fits on a 2017 Mercedes-Benz S550 even when the tire size sounds close to stock. Aftermarket wheels, altered offsets, suspension changes, and lowering can all affect clearance at the fender, suspension, and steering components, especially on staggered 19-inch and 20-inch setups.
That is why the actual wheel diameter and width on the car matter more than assumptions based on model name alone. A modified S550 should be checked at both front and rear positions so the selected tire size works with the wheel package already installed.
What should I inspect before driving a 2017 Mercedes-Benz S550 on new tires?
Before road use, inspect wheel condition, confirm that each tire size matches its wheel diameter, and make sure front and rear positions are correct on any staggered setup. Tire pressure, visible mounting damage, air retention, and basic clearance at full steering lock are all worth checking before the car goes into regular service.
A collector or low-use S550 also deserves a broader look at age-related issues around the rest of the chassis. Worn suspension parts, alignment problems, or damaged wheels can shorten tire life quickly, so a sound installation should be paired with a general readiness check before a longer drive.
How often should tires on a 2017 Mercedes-Benz S550 be inspected?
Tires on a 2017 Mercedes-Benz S550 should be inspected regularly, not just when tread wear becomes obvious. Look for cracking, cuts, bulges, uneven wear, and slow air loss, and pay close attention to the inside edges on low-profile staggered fitments where issues can be easier to miss.
Cars that are driven infrequently still need routine checks because age, storage conditions, and long stationary periods can affect tire condition. A quick inspection before drives and a more careful review during seasonal maintenance will help catch fitment, inflation, or aging concerns before they become road-use problems.
