The 2023 Mercedes-Benz CLS450 blends coupe-like rooflines with midsize luxury-sedan comfort, making tire fitment especially important to both appearance and road manners. On a car like this, wheel and tire choice are part of the overall driving character, not just a maintenance item. The 2023 Mercedes-Benz CLS450 uses staggered radial tire sizing, with different front and rear fitments and either 19-inch or 20-inch rim diameters depending on the setup. Available choices center on modern metric radial performance tires from BFGoodrich and Nitto, with blackwall sidewalls and several distinct series. The key step is confirming whether the car is on the 19-inch or 20-inch package before comparing front and rear replacements.
Which Tire Size Is Right for The 2023 Mercedes-Benz CLS450
The 2023 Mercedes-Benz CLS450 uses four primary tire sizes because fitment is staggered front to rear and also varies by wheel package. Front tires are either 245/40R19 or 245/35R20, while rear tires are either 275/35R19 or 275/30R20. Before selecting a tire, confirm both the exact axle position and whether the car has 19-inch or 20-inch wheels, since rim diameter is the first fitment checkpoint on this model.
245/35R20 is a metric radial size where 245 is the nominal section width in millimeters, 35 is the aspect ratio, R identifies radial construction, and 20 is the rim diameter in inches. On the 2023 Mercedes-Benz CLS450, this size is used at the front on the 20-inch setup, so it needs to be matched to the correct wheel package rather than treated as a universal fitment. Available choices include blackwall performance tires from BFGoodrich and Nitto across g-Force and NT555 G2 series. This size is the right place to focus when replacing front tires on a CLS450 already equipped with 20-inch wheels.
245/40R19 is a metric radial size with a 245-millimeter nominal section width, a 40-series profile, and a 19-inch rim diameter. On the 2023 Mercedes-Benz CLS450, it serves as the front fitment for the 19-inch wheel setup, making wheel diameter confirmation essential before purchase. BFGoodrich offers this size in several blackwall g-Force series, including Sport Comp 2, Comp 2 AS, and Phenom T/A. This is the size to compare when the car has 19-inch front wheels and the goal is to choose among different radial performance-oriented tire lines rather than change the basic fitment.
275/30R20 is a metric radial rear-tire size with a 275-millimeter nominal section width, a low 30-series profile, and a 20-inch rim diameter. On the 2023 Mercedes-Benz CLS450, this size belongs to the rear of the 20-inch staggered setup, so it should be paired with the correct 20-inch front size rather than mixed across wheel packages. The available product choice in this size centers on a blackwall Nitto NT555 G2 radial. It is the correct rear fitment to evaluate when the car is already equipped with 20-inch wheels and the owner wants to preserve the intended staggered layout.
275/35R19 is a metric radial size that uses a 275-millimeter nominal section width, a 35-series profile, and a 19-inch rim. For the 2023 Mercedes-Benz CLS450, it is the rear fitment on the 19-inch staggered arrangement, so it should be selected with the matching 19-inch front size in mind. Available blackwall options include BFGoodrich g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and the Nitto NT555 G2. This size matters when replacing rear tires on a CLS450 with 19-inch wheels and comparing different performance-focused radial series within the proper staggered setup.
Sub-model fitment on the 2023 Mercedes-Benz CLS450 is straightforward once axle position is identified. The covered front and rear sub-model entries use different tire sizes because this car runs a staggered setup, and wheel diameter must still be confirmed before choosing a replacement.
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2023 Mercedes-Benz CLS450 4Matic Front
The 2023 Mercedes-Benz CLS450 4Matic Front uses the narrower front tire sizes in either a 19-inch or 20-inch radial fitment. Tire selection here means confirming wheel diameter first, then comparing blackwall performance tire options within the correct front size.
The 2023 Mercedes-Benz CLS450 4Matic Rear uses the wider rear tire sizes that complete the staggered factory-style layout in 19-inch or 20-inch radial form. That makes rear tire selection a matter of matching the correct wheel package and preserving the intended front-to-rear size relationship.
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 2023 Mercedes-Benz CLS450 Tires for Sale
Available 2023 Mercedes-Benz CLS450 tire choices center on modern blackwall radial performance tires from BFGoodrich and Nitto. Across the four fitments, buyers can compare g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, and NT555 G2 series, with rim-width specifications varying by size.
These FAQs focus on 2023 Mercedes-Benz CLS450 tire size, staggered front and rear fitment, 19-inch versus 20-inch wheel packages, product selection, and the checks worth making before road use or after any wheel and suspension changes.
Tire Size & Fitment
What tire size fits a 2023 Mercedes-Benz CLS450?
The 2023 Mercedes-Benz CLS450 uses a staggered radial setup, so front and rear tire sizes are different. Front fitments are 245/40R19 or 245/35R20, and rear fitments are 275/35R19 or 275/30R20. The correct pair depends on whether the car is equipped with 19-inch or 20-inch wheels.
That means the first step is confirming the wheel package on the car rather than selecting by year and model alone. The CLS450 should keep its front and rear sizes in the proper staggered relationship, and any replacement should be checked against the actual wheel diameter, axle position, and current setup before installation.
What size rim does a 2023 Mercedes-Benz CLS450 use?
The 2023 Mercedes-Benz CLS450 uses either 19-inch or 20-inch rims, depending on the tire package on the car. The 19-inch setup uses 245/40R19 front and 275/35R19 rear, while the 20-inch setup uses 245/35R20 front and 275/30R20 rear.
Rim diameter is the most important fitment checkpoint on this model because the tire sizes are tied directly to the wheel package. Before replacing tires, check the markings on the current tires or wheels and confirm whether the car still has its original wheel arrangement or has been changed to a different diameter.
Why does the 2023 Mercedes-Benz CLS450 have more than one tire size?
The 2023 Mercedes-Benz CLS450 has more than one tire size because it uses a staggered setup with different front and rear dimensions, and it was also fitted with either 19-inch or 20-inch wheel diameters. That creates four primary fitments across the full front and rear package combinations.
For tire replacement, this means the car cannot be treated as a single-size application. The buyer needs to identify front versus rear placement and verify wheel diameter before choosing a tire, especially if the vehicle has had wheel changes, tire replacements at different times, or other modifications that may have altered the original setup.
Choosing the Right Tire
What should I consider when choosing a tire for a 2023 Mercedes-Benz CLS450?
Start with the exact size for the correct axle and wheel diameter, since the 2023 Mercedes-Benz CLS450 uses staggered front and rear fitment in either 19-inch or 20-inch form. After that, compare the available radial tire series, rim-width specifications where stated, and any load figures that appear for the size you need.
The real choice is usually among tire character rather than basic fitment. A buyer may be comparing BFGoodrich g-Force variants against a Nitto NT555 G2, or deciding between all-season-oriented and sport-oriented naming within the proper size, while still keeping the wheel package and front-to-rear relationship intact.
What sidewall styles are available for 2023 Mercedes-Benz CLS450 tires?
The available tires for the 2023 Mercedes-Benz CLS450 are blackwall radials across all four fitment sizes. That keeps the appearance clean and contemporary, which suits the car's modern luxury-sport character and also makes the comparison process simpler because sidewall treatment is not a major point of variation here.
Since the sidewall style stays consistent, selection usually comes down to size, axle position, brand, and tire series. It still helps to confirm the exact tire line and wheel diameter before replacing a set, especially when front and rear tires may wear at different rates and have been changed separately over time.
What brands offer tires for the 2023 Mercedes-Benz CLS450?
BFGoodrich and Nitto offer tires for the 2023 Mercedes-Benz CLS450 within its covered fitment sizes. Depending on the exact size, the available series include BFGoodrich g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, and Nitto NT555 G2, all in radial blackwall form.
Brand choice should follow fitment, not replace it. Some sizes have several BFGoodrich options, while others are narrower in selection, so it makes sense to confirm whether the tire is for the front or rear axle, match the 19-inch or 20-inch wheel package, and then compare the available series within that size.
Restoration & Appearance
Does correct tire fitment matter for a 2023 Mercedes-Benz CLS450?
Correct tire fitment matters on a 2023 Mercedes-Benz CLS450 because the car uses a modern staggered setup with different front and rear sizes tied to either 19-inch or 20-inch wheels. Using the wrong diameter or mixing the wrong front and rear sizes can change the intended stance and complicate replacement planning.
Appearance is part of the equation even on a newer luxury model. Keeping the proper size relationship preserves the visual balance of the wheel openings and the car's low-profile presentation, while blackwall tires in the correct dimensions maintain the clean look expected from a CLS450 without introducing an obviously mismatched setup.
How does tire construction affect the appearance of a 2023 Mercedes-Benz CLS450?
On the 2023 Mercedes-Benz CLS450, the primary fitments are all radial tires, so the construction question is less about changing era-correct appearance and more about maintaining the intended modern look. The low-profile metric sizes and blackwall sidewalls are a major part of how the car presents visually on both 19-inch and 20-inch wheels.
Because the CLS450 uses contemporary sizing, appearance is influenced most by choosing the correct profile and diameter rather than switching between vintage-style constructions. A tire that matches the proper axle position and wheel package will generally do more to preserve the car's design balance than a tire chosen only by approximate width.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2023 Mercedes-Benz CLS450?
Yes, modifications can affect tire fitment on a 2023 Mercedes-Benz CLS450. If the car has aftermarket wheels, a lowered suspension, spacer changes, or body alterations, the original front and rear size relationship may no longer be the only factor, because wheel width, offset, and clearance become part of the fitment decision.
A modified CLS450 should be checked at full steering lock and through suspension travel before assuming the stock-size tire is still the right answer. Even when the tire size itself is correct for the model, changes to wheel position or ride height can alter fender, liner, or suspension clearance in ways that need attention.
What should I inspect before driving a 2023 Mercedes-Benz CLS450 on new tires?
Before driving a 2023 Mercedes-Benz CLS450 on new tires, inspect the wheel diameter, confirm the front and rear sizes are installed in the correct positions, and check inflation, valve condition, and basic clearance. It is also worth looking for any signs of rubbing, uneven wheel damage, or previous suspension issues that may have affected the old tires.
A short initial drive followed by a recheck can help catch problems early. Pay attention to steering feel, vibration, and whether the staggered setup has been matched properly from side to side, then look again for air loss or contact marks so the car is ready for normal road use with the new set.
How often should tires on a 2023 Mercedes-Benz CLS450 be inspected?
Tires on a 2023 Mercedes-Benz CLS450 should be inspected regularly for pressure, tread condition, cuts, bulges, and uneven wear, especially because the car uses low-profile staggered sizes that can make wear patterns more noticeable. A quick visual check before routine driving and a closer inspection at regular service intervals is a sensible habit.
The staggered layout means front and rear tires may not wear in the same way, so each axle deserves separate attention. It also helps to inspect more closely before a longer drive or after hitting potholes, since wheel damage, alignment changes, or sidewall issues can become more important on 19-inch and 20-inch low-profile fitments.
