The 2010 Mercedes-Benz CLS550 sits in the first generation of the CLS line, blending coupe-like styling with V8 luxury-sedan performance in a way that helped define the four-door coupe segment. Its stance and road manners depend heavily on getting the tire setup right, because this model uses staggered radial fitments and appears with both 18-inch and 19-inch wheel combinations. Base front and rear sizes differ, and Sport Package cars add another layer of fitment choice. Available tires range from blackwall performance radials to redline and raised white letter options in select front sizes, so the right decision comes down to confirming configuration, wheel diameter, and the appearance you want.
Which Tire Size Is Right for The 2010 Mercedes-Benz CLS550
The 2010 Mercedes-Benz CLS550 uses six primary tire sizes, and the correct choice depends first on whether the car is a Base or Sport Package configuration and whether you are selecting for the front or rear axle. Wheel diameter also matters immediately, since this model appears with both 18-inch and 19-inch rim fitments. Once that is confirmed, the decision shifts to matching the correct staggered radial size and comparing the available tire series, sidewall treatments, and rim-width specifications within that fitment.
In 245/40R18, the 245 identifies nominal section width in millimeters, 40 is the aspect ratio, R indicates radial construction, and 18 is the rim diameter in inches. On the 2010 Mercedes-Benz CLS550, this size serves as a front fitment in the Base setup and reflects the modern low-profile, performance-oriented sizing used on the car. Available choices include blackwall tires from BFGoodrich, Nitto, and M&H Racemaster, along with Pro-Trac Street Pro III versions in redline and RWL. This size is the one to evaluate when the car retains the Base front wheel package and the goal is balancing fitment, appearance, and intended driving use.
A 275/35R18 tire uses a 275-millimeter nominal section width, a 35-series profile, radial construction, and an 18-inch wheel diameter. This size is used on the rear of the 2010 Mercedes-Benz CLS550 Base, giving the car the wider rear portion of its staggered setup rather than a square front-to-rear arrangement. BFGoodrich and Nitto options are available here in blackwall form across g-Force and NT555 G2 series choices. This is the rear size to confirm when the car carries the Base 18-inch wheel package and needs the proper wider rear fitment.
The size 255/35R19 designates a 255-millimeter section width, a 35-series sidewall profile, radial construction, and a 19-inch rim. On the 2010 Mercedes-Benz CLS550, this is a front tire size used with one Sport Package wheel configuration, so it should not be treated as a universal fitment for every CLS550. Available selections are blackwall BFGoodrich tires in the g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A series. This size is the correct starting point when a Sport Package car is running the 19-inch front wheel setup and the goal is keeping the intended front-to-rear stagger intact.
With 255/40R18, the 255 is the nominal width in millimeters, 40 is the aspect ratio, R stands for radial, and 18 is the wheel diameter. This size is also used on the front of the 2010 Mercedes-Benz CLS550 Sport Package, but with an 18-inch wheel rather than the 19-inch Sport setup. BFGoodrich offers this fitment in blackwall form through the g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A lines. It is the size to evaluate when a Sport Package car is equipped with 18-inch front wheels and needs a front tire matched to that specific staggered arrangement.
A 285/30R19 tire combines a 285-millimeter nominal width with a very short 30-series sidewall, radial construction, and a 19-inch rim diameter. On the 2010 Mercedes-Benz CLS550, this is the rear counterpart to the 255/35R19 Sport Package front fitment, so it belongs to a specific 19-inch staggered combination rather than every version of the car. Its role is to preserve the intended rear width and profile relationship for that package. This size should be chosen only after confirming that the car has the 19-inch Sport rear wheel setup and not the 18-inch rear alternative.
The code 285/35R18 means a nominal 285-millimeter section width, a 35-series aspect ratio, radial construction, and an 18-inch wheel diameter. For the 2010 Mercedes-Benz CLS550, this size is used at the rear on the 18-inch Sport Package setup, pairing with the 255/40R18 front fitment. The available product here is a blackwall Nitto NT555 G2, which makes the selection more about confirming the correct rear size and wheel specification than comparing multiple cosmetic treatments. This rear fitment should be verified carefully on Sport Package cars using 18-inch wheels.
Sub-model fitment on the 2010 Mercedes-Benz CLS550 is not a one-size situation, because tire selection changes by Base versus Sport Package configuration and also by front versus rear position. Checking the exact sub-model and wheel diameter first is the key step before comparing tire choices.
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2010 Mercedes-Benz CLS550 Base Front
The Base front setup uses a dedicated 18-inch radial front size that is different from the rear tire on the same car. That means the front axle should be matched to the proper staggered fitment first, then narrowed down by blackwall, redline, or raised white letter product choices where available.
The Base rear position uses its own wider 18-inch radial size, distinct from the Base front tire. Tire selection here centers on keeping the correct rear stagger and then comparing the available blackwall performance-oriented product lines within that fitment.
The Sport Package front fitment can use either an 18-inch or 19-inch radial size, so wheel diameter has to be confirmed before anything else. Once that is settled, the choice becomes selecting the correct front tire series for the specific Sport wheel package on the car.
The Sport Package rear setup also varies between 18-inch and 19-inch radial sizes, paired to the corresponding Sport front fitment. Getting this rear position right is essential to preserving the intended stagger, overall stance, and wheel-to-tire relationship of the Sport configuration.
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 2010 Mercedes-Benz CLS550 Tires for Sale
Available 2010 Mercedes-Benz CLS550 tires are all radial designs, with choices from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac depending on size. Buyers can compare blackwall performance series across most fitments, while select 245/40R18 front options also add redline and RWL appearance choices.
Tire questions for the 2010 Mercedes-Benz CLS550 usually come down to identifying the correct front and rear size, confirming 18-inch versus 19-inch wheels, and comparing radial tire choices by brand, series, sidewall style, and intended use.
Tire Size & Fitment
What tire size fits a 2010 Mercedes-Benz CLS550?
The 2010 Mercedes-Benz CLS550 uses staggered radial tire sizes rather than one universal fitment. Base models use 245/40R18 front and 275/35R18 rear, while Sport Package cars use either 255/40R18 front with 285/35R18 rear or 255/35R19 front with 285/30R19 rear.
The key is identifying both the exact configuration and the wheel diameter before choosing tires. Front and rear sizes are different, and Sport Package cars can be equipped with either 18-inch or 19-inch combinations, so the tire selection should match the actual wheel setup on the car rather than the model name alone.
What size rim does a 2010 Mercedes-Benz CLS550 use?
The 2010 Mercedes-Benz CLS550 uses both 18-inch and 19-inch rim diameters, depending on configuration. Base front and rear fitments are on 18-inch wheels, while Sport Package cars appear with either an 18-inch front and rear combination or a 19-inch front and rear combination.
Confirming rim diameter is the first fitment check because a tire size must match the wheel diameter exactly. A 19-inch tire cannot be mounted on an 18-inch wheel, and the CLS550 also uses different front and rear widths, so both axle position and wheel diameter should be verified before selecting a tire.
Why does the 2010 Mercedes-Benz CLS550 have more than one tire size?
Multiple tire sizes appear on the 2010 Mercedes-Benz CLS550 because the car uses staggered front and rear fitments, and the Sport Package adds a separate wheel and tire combination. That creates different size pairings for Base cars and for Sport Package cars equipped with either 18-inch or 19-inch wheels.
In practical terms, the size choice is driven by the hardware on the car, not by preference alone. Looking at the actual wheels and confirming whether the car is Base or Sport Package prevents mixing front and rear sizes incorrectly or choosing an 18-inch tire when the car is fitted with 19-inch wheels.
Choosing the Right Tire
What should I consider when choosing a 245/40R18 tire for a 2010 Mercedes-Benz CLS550?
A 245/40R18 on the 2010 Mercedes-Benz CLS550 is a front fitment for the Base setup, so the first consideration is confirming that the car actually uses the Base 18-inch front wheel package. After that, selection differences come from tire series, sidewall style, rim-width specification, load figures where shown, and intended use.
This size offers the broadest cosmetic variety on the page, including blackwall, redline, and RWL choices, along with performance-oriented series from BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster. Matching the tire to the car's actual use matters, especially if the CLS550 is driven mainly on the street versus more specialized drag-oriented use.
What sidewall styles are available for 2010 Mercedes-Benz CLS550 tires?
Most 2010 Mercedes-Benz CLS550 tire options shown here use a blackwall sidewall, which suits the car's modern performance-luxury character. In the 245/40R18 front size, additional appearance choices include redline and RWL, giving Base front fitment buyers a more customized look without changing the tire size itself.
Sidewall style should be chosen after the correct size and wheel diameter are confirmed, not before. A sidewall treatment can change the presentation of the car noticeably, but it does not override the need to keep the proper staggered front and rear setup that the CLS550 uses across its different configurations.
What brands offer tires for the 2010 Mercedes-Benz CLS550?
Tires for the 2010 Mercedes-Benz CLS550 are available from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, although brand choice varies by size. BFGoodrich appears across several 18-inch and 19-inch fitments, Nitto covers select front and rear sizes, and M&H Racemaster and Pro-Trac appear in the 245/40R18 front fitment.
Brand comparison makes the most sense after the exact size is settled, because not every size has the same range of choices. Some fitments offer several series to compare, while others have only one product shown, so the CLS550 owner should start with configuration and wheel diameter, then narrow the brand options within that size.
Restoration & Appearance
Which tire should I choose for a period-style 2010 Mercedes-Benz CLS550?
A period-style tire choice for a 2010 Mercedes-Benz CLS550 starts with keeping the correct staggered size and wheel diameter for the car's actual Base or Sport Package setup. Since all fitments here are modern radial sizes, the visual decision is less about vintage construction and more about selecting a sidewall and series that suit the car's original-era character.
For a more understated factory-era appearance, blackwall options are the natural starting point because they are available across nearly all CLS550 fitments shown here. On Base front 245/40R18 applications, redline and RWL treatments offer a more customized look, but buyers focused on exact originality should compare those choices against model-specific historical references.
Does correct tire fitment matter for a 2010 Mercedes-Benz CLS550 restoration?
Correct tire fitment matters on a 2010 Mercedes-Benz CLS550 restoration because the car's appearance depends on its staggered front and rear setup and the proper 18-inch or 19-inch wheel pairing. Using the wrong profile or axle-specific size can change the stance and visual balance that are central to the CLS design.
Fitment accuracy also affects how restoration details read as a complete package. Even on a newer collector-era Mercedes, confirming wheel diameter, front-versus-rear sizing, and appropriate sidewall style helps the finished car look intentional rather than mismatched, especially if it still carries original-style wheels or a factory-style Sport Package presentation.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2010 Mercedes-Benz CLS550?
Yes, modifications can affect tire fitment on a 2010 Mercedes-Benz CLS550 even when the tire size looks close on paper. Aftermarket wheels, altered wheel widths, suspension changes, lowering, and body modifications can all change how much room the car has for its original staggered front and rear sizes.
A modified CLS550 should be checked for wheel diameter, wheel width, steering clearance, and rear fender clearance before replacement tires are chosen. That matters even more on Sport Package cars, where the factory setup already uses low-profile front and rear combinations that leave less margin for guessing.
What should I inspect before driving a 2010 Mercedes-Benz CLS550 on new tires?
Before driving a 2010 Mercedes-Benz CLS550 on new tires, inspect the wheels for correct diameter and condition, confirm that the front and rear sizes match the car's actual setup, and check inflation pressure, valve stems, and overall mounting quality. A quick look at alignment condition is also worthwhile on a staggered performance-luxury sedan.
Road use checks should continue with fender and suspension clearance at full steering lock and under normal ride height. It also helps to watch for vibration, unusual air loss, or contact marks during the first miles, since the CLS550's low-profile tire combinations leave less room for unnoticed fitment errors.
How often should tires on a 2010 Mercedes-Benz CLS550 be inspected?
Tires on a 2010 Mercedes-Benz CLS550 should be inspected regularly for pressure loss, uneven wear, cuts, bulges, and sidewall damage. On a low-mileage or collector-kept car, inspection matters just as much as tread depth, because age and long storage can affect tire condition even when the car is not driven often.
A good routine is to check them before longer drives and periodically during normal use, with extra attention after seasonal storage or any wheel change. Since the CLS550 uses staggered front and rear sizes, uneven wear can also be an early clue that alignment, suspension condition, or inflation needs attention.
