The 2017 Mercedes-Benz CLS400 blends four-door luxury with coupe-like proportions, making tire fitment an important part of both its appearance and the way it carries itself on the road. This is a modern Mercedes-Benz with a staggered tire setup, so the front and rear positions do not use the same size. The CLS400 uses radial tires in either 18-inch or 19-inch fitments, with 255-width fronts and 285-width rears. Available choices lean toward performance-oriented blackwall designs from BFGoodrich and Nitto across several tire series. The key decision is confirming whether the car is on its 18-inch or 19-inch wheel package before comparing tire options.
Which Tire Size Is Right for The 2017 Mercedes-Benz CLS400
The 2017 Mercedes-Benz CLS400 uses four primary tire sizes, and the right one depends first on wheel diameter and then on whether you are selecting for the front or rear axle. Both Base and 4Matic configurations follow the same staggered radial layout, so the real fitment check is confirming whether the car is equipped with 18-inch or 19-inch wheels before choosing tires.
255/35R19 is a metric radial size with a 255-millimeter section width, a 35-series profile, radial construction, and a 19-inch rim diameter. On the 2017 Mercedes-Benz CLS400, this size serves the front position on the 19-inch setup and supports the car's staggered fitment layout. Available choices in this size come from BFGoodrich in blackwall form across the g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A series. This is the size to evaluate when the car has 19-inch front wheels and you want to compare series characteristics within the correct fitment family.
255/40R18 is a metric radial size that pairs a 255-millimeter section width with a 40-series aspect ratio on an 18-inch wheel. For the 2017 Mercedes-Benz CLS400, it is the front tire size used with the 18-inch staggered arrangement rather than the 19-inch package. BFGoodrich offers this size in blackwall form through the g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A lines, giving buyers several performance-oriented series to compare. It is the right starting point when the front axle is on 18-inch wheels and you want to stay with the intended front fitment size.
285/30R19 is a wider metric radial size with a 285-millimeter section width, a 30-series profile, and a 19-inch rim diameter. On the 2017 Mercedes-Benz CLS400, this size is used at the rear with the 19-inch wheel setup, where it complements the narrower front tire in a true staggered arrangement. Its low-profile format is part of the 19-inch rear fitment story, so it should be matched to the correct rear wheel diameter rather than treated as interchangeable with the 18-inch rear size. This is the size to confirm when replacing rear tires on a CLS400 equipped with 19-inch wheels.
285/35R18 is a metric radial rear size that combines a 285-millimeter section width with a 35-series profile on an 18-inch wheel. For the 2017 Mercedes-Benz CLS400, it belongs to the rear position on the 18-inch staggered setup and should be paired with the corresponding 255/40R18 front size. Nitto offers this fitment in a blackwall NT555 G2, giving the 18-inch rear application a distinct product choice within the correct size. It is the rear size to verify when the car is running 18-inch wheels and you are matching the existing staggered configuration.
Sub-model fitment on the 2017 Mercedes-Benz CLS400 is straightforward because Base and 4Matic configurations follow the same front and rear size pattern. What matters most is confirming wheel diameter and axle position, since the front tires use different sizes than the rear tires.
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2017 Mercedes-Benz CLS400 4Matic Front
The 2017 Mercedes-Benz CLS400 4Matic Front uses the same front tire fitment pattern as the Base Front, with a choice between the 18-inch and 19-inch front sizes. Tire selection here centers on matching the actual wheel diameter and then comparing available blackwall radial options within that front fitment.
The 2017 Mercedes-Benz CLS400 4Matic Rear follows the same rear staggered sizing approach as the Base Rear, using a wider rear tire than the front. The practical step is confirming whether the car is on 18-inch or 19-inch rear wheels before choosing the correct radial rear size.
The 2017 Mercedes-Benz CLS400 Base Front uses the same front fitment sizes found on the 4Matic Front, with one size for the 18-inch setup and another for the 19-inch setup. Selecting the right tire means checking the front wheel diameter first and then comparing the available BFGoodrich radial series in that size.
The 2017 Mercedes-Benz CLS400 Base Rear uses the same wider rear fitment strategy as the 4Matic Rear, with separate rear sizes for the 18-inch and 19-inch wheel packages. Rear tire replacement should focus on matching the existing staggered setup rather than assuming the front and rear positions share the same size.
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 CLS400 Tires for Sale
Available 2017 Mercedes-Benz CLS400 tire choices center on blackwall radial performance tires from BFGoodrich and Nitto. The front sizes offer several BFGoodrich g-Force series options, while the 18-inch rear fitment includes a Nitto NT555 G2 for buyers comparing series and rim-width compatibility.
Tire questions for the 2017 Mercedes-Benz CLS400 usually come down to front-versus-rear sizing, 18-inch versus 19-inch wheels, and choosing among the available radial performance tire options. These answers focus on fitment, product selection, and the checks worth making before road use.
Tire Size & Fitment
What tire size fits a 2017 Mercedes-Benz CLS400?
The 2017 Mercedes-Benz CLS400 uses a staggered tire setup, so front and rear sizes are different. Front fitments are 255/35R19 or 255/40R18, while rear fitments are 285/30R19 or 285/35R18. All of these are radial sizes.
The first thing to confirm is whether the car has 18-inch or 19-inch wheels, because that determines which front and rear pair belongs on the vehicle. A CLS400 should also be checked axle by axle, since using a front size on the rear or mixing wheel diameters will not preserve the intended staggered fitment layout.
What size rim does a 2017 Mercedes-Benz CLS400 use?
The 2017 Mercedes-Benz CLS400 uses either 18-inch or 19-inch rims, depending on the wheel package on the car. The 255/40R18 and 285/35R18 sizes belong to the 18-inch setup, while the 255/35R19 and 285/30R19 sizes belong to the 19-inch setup.
Wheel diameter should be verified before selecting tires, especially on a car that may have had wheel changes over time. The CLS400 also uses different front and rear sizes, so checking one wheel is not enough. Confirm both the rim diameter and which axle you are replacing before narrowing down the available tire choices.
Do all 2017 Mercedes-Benz CLS400 sub-models use the same tire size?
Base and 4Matic versions of the 2017 Mercedes-Benz CLS400 follow the same size pattern, but not a single universal tire size. Both use 255-width tires in front and 285-width tires in the rear, with either an 18-inch or 19-inch wheel package determining the exact size.
That means sub-model identification is less important than confirming wheel diameter and tire position. A front fitment still differs from a rear fitment, even when the overall pattern is shared across Base and 4Matic cars. Matching the existing staggered arrangement is the practical step that keeps replacement selection on track.
Choosing the Right Tire
What should I consider when choosing a tire for a 2017 Mercedes-Benz CLS400?
Start with the correct axle position and wheel diameter, since the 2017 Mercedes-Benz CLS400 uses different front and rear sizes and came with both 18-inch and 19-inch fitments. All primary sizes are radial, so the next choice becomes tire series, rim-width compatibility, and the kind of performance-oriented driving feel you want from the available options.
It also helps to compare practical details such as maximum load figures where stated, tire weight, and the intended role of the tire on the car. A front replacement should be chosen within the proper front size, and a rear replacement within the proper rear size, with attention to keeping the staggered setup consistent side to side.
What sidewall styles are available for 2017 Mercedes-Benz CLS400 tires?
The available tire options for the 2017 Mercedes-Benz CLS400 use a blackwall sidewall style. That applies across the BFGoodrich front-fitment choices and the Nitto rear-fitment option offered in the covered sizes.
For this vehicle, sidewall selection is less about decorative treatment and more about choosing the correct size and tire series for the wheel package on the car. Since the available options share the same general sidewall presentation, comparison usually shifts toward front or rear application, brand, series, and rim-width suitability.
What brands offer tires for the 2017 Mercedes-Benz CLS400?
BFGoodrich and Nitto offer tires for the 2017 Mercedes-Benz CLS400 in the covered fitments. BFGoodrich appears in the front sizes through several g-Force series, while Nitto is represented in the 285/35R18 rear size with the NT555 G2.
Brand choice should still follow fitment first, since not every brand appears in every CLS400 size. It makes sense to confirm the car's wheel diameter and whether the tire is for the front or rear axle before comparing series details. Once that is settled, the meaningful differences are usually size-specific availability and product characteristics rather than brand name alone.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2017 Mercedes-Benz CLS400?
Yes. Wheel changes, aftermarket offsets, suspension modifications, or lowering can all affect tire fitment on a 2017 Mercedes-Benz CLS400, even when the tire size itself is one of the standard front or rear sizes. A staggered setup leaves less room for assumptions because the front and rear tires are already different.
Checking the actual wheel diameter on the car is only the first step. Clearance at the fender, inner wheelhouse, and steering components should also be reviewed if the car has been altered from stock wheel or suspension dimensions. That extra check matters before moving ahead with either the 18-inch or 19-inch tire package.
What should I inspect before driving a 2017 Mercedes-Benz CLS400 on new tires?
Before driving a 2017 Mercedes-Benz CLS400 on new tires, inspect the wheels for damage, confirm that the front and rear sizes were mounted in the correct positions, and make sure inflation is set appropriately for the tire and vehicle setup. It also helps to look for any obvious rubbing, uneven seating, or valve-stem issues after installation.
A short initial drive should be followed by another visual check, especially on a staggered car where front and rear fitments differ. Watch for air loss, vibration, or contact marks near the fenders or suspension areas. Catching those issues early is more useful than assuming a correct size alone guarantees the whole installation is right.
How often should tires on a 2017 Mercedes-Benz CLS400 be inspected?
Tires on a 2017 Mercedes-Benz CLS400 should be inspected regularly, not just when tread looks low. Look over them during routine pressure checks and before longer trips for uneven wear, cuts, bulges, sidewall damage, or anything that suggests the staggered setup is not wearing evenly front to rear.
Cars that see seasonal or occasional use deserve extra attention because age and storage conditions matter as much as mileage. Pressure loss can go unnoticed on a low-use vehicle, and a tire can appear serviceable while still developing cracks or flat spotting. Frequent visual checks help keep the CLS400's road manners and fitment condition where they should be.
