The 2007 Mercedes-Benz CLS550 brought the four-door coupe idea into the modern luxury performance market, combining the stance of a grand touring sedan with a lower, more dramatic roofline. That shape, along with the car’s V8 character and wide-track presence, makes tire fitment especially important to both appearance and road manners. This CLS550 uses staggered 18-inch radial tire sizing, with one front and one rear size for the Base setup and a wider front and rear combination with the AMG Sport Package. Available choices include blackwall performance radials, plus select redline and raised white letter options in the front size. The key is matching the exact front and rear setup before comparing style, series, and intended use.
Which Tire Size Is Right for The 2007 Mercedes-Benz CLS550
The 2007 Mercedes-Benz CLS550 uses four primary tire sizes, and the correct combination depends on whether the car has the Base staggered setup or the wider AMG Sport Package staggered setup. All of these are radial tires for 18-inch wheels, so the first step is confirming the exact front and rear configuration on the car before selecting replacement tires.
In 245/40R18, 245 identifies the nominal section width in millimeters, 40 is the aspect ratio, R indicates radial construction, and 18 is the wheel diameter in inches. On the 2007 Mercedes-Benz CLS550, this is the front tire size for the Base setup, making it part of the car’s staggered fitment rather than a universal size across every version. Available choices include blackwall performance radials from BFGoodrich, Nitto, and M&H Racemaster, along with Pro-Trac Street Pro III options in redline and RWL form. This size matters when keeping the standard front-end fitment and maintaining the intended relationship between front and rear tire width.
In 275/35R18, 275 is the nominal section width in millimeters, 35 is the aspect ratio, R marks radial construction, and 18 is the rim diameter in inches. This size is used on the rear of the Base 2007 Mercedes-Benz CLS550, where the wider rear tire supports the staggered front-to-rear setup. Product choices center on blackwall performance radials from BFGoodrich and Nitto across series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. It is the size to evaluate when replacing the standard rear tires without changing to the AMG Sport Package wheel-and-tire combination.
In 255/40R18, 255 gives the nominal tire width in millimeters, 40 is the aspect ratio, R means radial construction, and 18 identifies the wheel diameter in inches. On the 2007 Mercedes-Benz CLS550, this size is used at the front when the car is equipped with the AMG Sport Package, so it belongs to that wider staggered setup. Available tires in this size are blackwall radials from BFGoodrich in g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A series. This is the front size to confirm when the car carries the sport package wheel setup and needs the proper front-to-rear balance preserved.
In 285/35R18, 285 is the nominal section width in millimeters, 35 is the aspect ratio, R signifies radial construction, and 18 is the wheel diameter in inches. This size is the rear tire for the 2007 Mercedes-Benz CLS550 with the AMG Sport Package, pairing with a wider front tire than the standard setup. The available choice in this size is the Nitto NT555 G2 blackwall radial, which gives this fitment a focused product path compared with the other CLS550 sizes. It is the rear size to verify when the car uses the AMG Sport Package staggered arrangement rather than the Base wheel-and-tire combination.
Sub-model fitment on the 2007 Mercedes-Benz CLS550 is defined by front and rear position as well as by package. The Base car and the version with the AMG Sport Package use different staggered size combinations, so identifying the exact setup on the car is essential before choosing tires.
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2007 Mercedes-Benz CLS550 Base Front
The Base front position uses the narrower front tire in the standard staggered arrangement for the 2007 CLS550. Tire selection here comes down to keeping that front size matched properly to the Base rear size while choosing among available brands, sidewall treatments, and performance-oriented radial series.
The Base rear position carries the wider rear tire that completes the standard staggered setup on the 2007 CLS550. Choosing the correct rear size is important for maintaining the intended front-to-rear relationship, and the available products focus on blackwall radial performance options.
The CLS550 with AMG Sport Package uses a wider front tire than the standard Base setup, making front fitment package-specific. Tire selection should stay tied to the AMG Sport Package front and rear pairing rather than mixing Base and sport-package sizes without confirming the wheel setup first.
The AMG Sport Package rear position uses the widest rear tire found on the 2007 CLS550 combinations covered here. That makes rear fitment especially important to confirm, since the available choice needs to match the sport-package wheel width and remain properly paired with the AMG front 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 2007 Mercedes-Benz CLS550 Tires for Sale
Available 2007 Mercedes-Benz CLS550 tire choices center on 18-inch radial performance tires from BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster. Depending on size, buyers can compare blackwall options across several series, with added redline and RWL styling choices in the 245/40R18 front fitment.
These FAQs focus on the staggered 18-inch tire fitment used on the 2007 Mercedes-Benz CLS550, including front and rear size differences, package-specific selection, sidewall and brand choices, and the checks that matter before road use.
Tire Size & Fitment
What tire size fits a 2007 Mercedes-Benz CLS550?
The 2007 Mercedes-Benz CLS550 uses a staggered tire setup, and the exact sizes depend on the configuration. The Base setup uses 245/40R18 in front and 275/35R18 in the rear, while the CLS550 with AMG Sport Package uses 255/40R18 in front and 285/35R18 in the rear. All four sizes are radial tires for 18-inch wheels.
The key is identifying the actual front and rear package on the car before ordering replacements. A CLS550 can have the standard staggered combination or the wider AMG Sport Package combination, and front and rear sizes are not interchangeable just because they share the same wheel diameter.
What size rim does a 2007 Mercedes-Benz CLS550 use?
Each tire size used on the 2007 Mercedes-Benz CLS550 here is built around an 18-inch rim diameter. That applies to the Base front and rear sizes as well as the front and rear sizes used with the AMG Sport Package, so wheel diameter stays consistent even though tire width and profile change.
Rim diameter is only the first checkpoint. Wheel width also matters, especially on a staggered performance sedan, so it is wise to confirm the actual front and rear wheel dimensions on the car before moving between available tire sizes or comparing different product specifications.
Why does the 2007 Mercedes-Benz CLS550 have more than one tire size?
The 2007 Mercedes-Benz CLS550 has more than one tire size because it uses staggered front and rear fitment, and the AMG Sport Package uses a wider staggered combination than the Base setup. That means the car does not rely on one uniform size at all four corners, even though all versions here stay on 18-inch rims.
This matters because selecting by year, make, and model alone is not enough if the car’s package or wheel setup has changed. The right approach is to confirm whether the car is Base or AMG Sport Package, then match the correct front and rear sizes as a pair.
Choosing the Right Tire
What should I consider when choosing a 2007 Mercedes-Benz CLS550 tire?
Start with the correct front and rear size for the exact 2007 Mercedes-Benz CLS550 setup, since the Base car and the AMG Sport Package use different staggered combinations. From there, compare radial construction, intended use, sidewall style where available, and product details such as rim-width specification, weight, and load capacity when those figures matter to your setup.
The practical decision is usually less about finding any 18-inch tire and more about preserving the right relationship between the front and rear tires. A car kept close to its stock configuration may prioritize matching size and appearance, while a modified or aggressively driven example may require closer wheel-spec and clearance checks.
What sidewall styles are available for 2007 Mercedes-Benz CLS550 tires?
Blackwall is the main sidewall style across the available 2007 Mercedes-Benz CLS550 tire sizes. In the 245/40R18 front size used on the Base setup, there are also Pro-Trac Street Pro III options with redline and RWL styling, giving that fitment a more appearance-focused choice than the other CLS550 sizes.
Sidewall style changes the look of the car far more than the fitment itself, so the first priority is still choosing the correct size for the front or rear position. Once size is confirmed, blackwall keeps a modern understated presentation, while redline or raised white letter treatment adds a more custom visual accent.
What brands offer tires for the 2007 Mercedes-Benz CLS550?
Available tire brands for the 2007 Mercedes-Benz CLS550 include BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster. Brand coverage depends on size, with BFGoodrich and Nitto appearing across several CLS550 fitments, while Pro-Trac styling options and the M&H Racemaster drag-oriented radial are tied to the 245/40R18 front size.
Brand choice should follow the fitment first, then the character of the tire. Some sizes offer a broader mix of series and uses, while others have a narrower product path, so it helps to compare what is actually offered in the exact front or rear size rather than choosing brand before size.
Restoration & Appearance
Which tire should I choose for a period-style 2007 Mercedes-Benz CLS550?
A period-style 2007 Mercedes-Benz CLS550 tire choice starts with keeping the correct staggered 18-inch size combination for the exact setup on the car. Since this is a modern radial-fitment Mercedes rather than a bias-ply-era collector car, the visual decision is usually between a clean blackwall look and, in the 245/40R18 front size, select styling options such as redline or RWL.
Most owners aiming for a restrained original-era presentation will stay with blackwall radials in the proper front and rear sizes. If exact showroom-era appearance matters, compare the tire choice against factory literature, dealer brochures, or marque-specific references before using a custom-style sidewall treatment.
Does correct tire fitment matter for a 2007 Mercedes-Benz CLS550 restoration?
Correct tire fitment matters on a 2007 Mercedes-Benz CLS550 restoration because the car’s stance and proportions depend on the proper staggered relationship between front and rear tires. Using the wrong width or mixing the Base and AMG Sport Package combinations can change the visual balance of the car even when the tires all share an 18-inch rim diameter.
Fitment also affects the restoration process beyond appearance. Matching the proper size combination helps preserve intended wheel fill, avoids guesswork when replacing one axle at a time, and gives a cleaner foundation for evaluating alignment, suspension condition, and wheel originality on a car being brought back into service.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2007 Mercedes-Benz CLS550?
Modifications can affect tire fitment on a 2007 Mercedes-Benz CLS550 even when the tire size matches one of the known factory-type combinations. Aftermarket wheels, altered offsets, suspension lowering, spacer use, or body and fender changes can all influence how a 245/40R18, 275/35R18, 255/40R18, or 285/35R18 tire sits on the car.
That is especially important on a staggered setup where front and rear widths already differ. It helps to confirm wheel width, check steering and fender clearance at full lock and suspension travel, and avoid assuming that a size used on one CLS550 configuration automatically suits a modified car.
What should I inspect before driving a 2007 Mercedes-Benz CLS550 on new tires?
Before driving a 2007 Mercedes-Benz CLS550 on new tires, inspect the wheel condition, verify that the front and rear sizes match the car’s actual setup, and check inflation pressure carefully. It is also smart to look over alignment-related wear patterns, valve stems, and any signs of rubbing that may point to wheel or suspension issues.
A short road test should confirm that the car tracks cleanly and clears properly in normal driving and during full steering input. Rechecking pressure and visually inspecting the sidewalls after the first drives can help catch mounting, clearance, or air-loss issues before they become harder to diagnose.
What should I check before a longer drive in a 2007 Mercedes-Benz CLS550?
Before a longer drive in a 2007 Mercedes-Benz CLS550, confirm that the correct staggered tire sizes are installed at the proper positions and that all four tires are in sound condition. Pressure, tread condition, sidewall condition, and any signs of cuts, bulges, uneven wear, or slow air loss deserve attention before highway use.
Longer trips also put more emphasis on wheel balance, alignment, and the general condition of suspension and steering components. A CLS550 that has sat for extended periods should receive an especially careful inspection, since age, storage conditions, and flat-spotting concerns can matter even when tread depth still looks acceptable.
