The 2010 Mercedes-Benz CL550 came from a period when Mercedes coupes blended long-distance luxury with serious power and a distinctly substantial road presence. As the flagship two-door in the CL range, it asks for tire fitment that matches both its weight and its grand-touring character. This model uses radial tires, but the exact size depends on whether the car is a CL550 4Matic or a 4Matic with Sport Package, and rim diameter changes with those configurations. Available choices range from blackwall performance-oriented lines to Pro-Trac RWL and redline styles, so the decision is less about construction type and more about matching the car's wheel setup, appearance, and intended use.
Which Tire Size Is Right for The 2010 Mercedes-Benz CL550
Three tire sizes apply to the 2010 Mercedes-Benz CL550, and the right one depends on the exact sub-model and wheel diameter. The CL550 4Matic uses 255/45R18, while the 4Matic w/Sport Pkg. uses either 255/40R19 or 255/35R20. Before comparing brands or sidewall treatments, confirm which wheels are on the car, since all three sizes share radial construction but fit different rim diameters.
A 255/45R18 tire uses a 255-millimeter section width, a 45-series aspect ratio, radial construction, and an 18-inch rim diameter. On the 2010 Mercedes-Benz CL550, this is the radial fitment associated with the 4Matic configuration and suits the larger-profile look of the 18-inch wheel setup. Available choices include BFGoodrich, Nitto, and Pro-Trac products, with blackwall, raised white letter, and redline sidewall treatments. This size makes sense when the car remains on its 18-inch wheel package and the goal is to choose among performance-oriented or appearance-focused options within that fitment.
A 255/35R20 tire keeps the same 255-millimeter nominal width but uses a lower 35-series profile on a 20-inch rim. For the 2010 Mercedes-Benz CL550, this size belongs to the 4Matic w/Sport Pkg. setup, so it should be selected only after confirming that 20-inch wheels are actually on the car. Product choices include BFGoodrich, Nitto, and Pro-Trac, with blackwall options alongside RWL and redline versions in the Street Pro III series. This size is the one to evaluate when the car has the sport package wheel arrangement and you want to preserve that low-profile presentation.
A 255/40R19 tire combines a 255-millimeter width with a 40-series profile and fits a 19-inch rim. On the 2010 Mercedes-Benz CL550, this size also belongs to the 4Matic w/Sport Pkg. group, making wheel confirmation essential before selection because it does not share the same rim diameter as the base 4Matic size. BFGoodrich and Pro-Trac options are available here, including blackwall, RWL, and redline sidewall styles across several series. This size is worth focusing on when the car wears 19-inch sport-package wheels and the buyer wants to compare appearance and product-character differences within the correct fitment.
Sub-model fitment matters on the 2010 Mercedes-Benz CL550 because tire size changes with the wheel and sport-package configuration. The first step is identifying whether the car is a CL550 4Matic or a 4Matic w/Sport Pkg., then confirming the actual rim diameter on the vehicle.
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2010 Mercedes-Benz CL550 4Matic
The 2010 Mercedes-Benz CL550 4Matic uses a single radial tire size, which keeps fitment relatively straightforward once the standard wheel setup is confirmed. Tire selection then centers on brand, sidewall style, and product character rather than choosing between multiple primary sizes.
The 2010 Mercedes-Benz CL550 4Matic w/Sport Pkg. uses more than one radial tire size, so exact wheel diameter becomes the key detail before ordering. That makes it especially important to verify whether the car is on 19-inch or 20-inch wheels before comparing available tire lines and sidewall treatments.
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 CL550 Tires for Sale
Available 2010 Mercedes-Benz CL550 tires span 18-, 19-, and 20-inch radial fitments from BFGoodrich, Nitto, and Pro-Trac. The main differences in the product grid are tire series, blackwall versus RWL or redline sidewalls, and rim-width compatibility within each size.
Owners of a 2010 Mercedes-Benz CL550 usually need to sort out exact tire size by sub-model and wheel diameter before comparing radial options, sidewall styles, and product series. These FAQs focus on fitment, selection, appearance, and road-use checks for this specific coupe.
Tire Size & Fitment
What tire size fits a 2010 Mercedes-Benz CL550?
The 2010 Mercedes-Benz CL550 uses three possible tire sizes: 255/45R18, 255/40R19, and 255/35R20. The CL550 4Matic uses 255/45R18, while the CL550 4Matic w/Sport Pkg. uses either 255/40R19 or 255/35R20 depending on the wheel setup.
The practical step is confirming the exact sub-model and the wheels actually on the car before selecting a tire. A CL550 that has been changed to a different factory wheel package or fitted with aftermarket wheels should be checked at the rim itself, since all three sizes are radial but they do not share the same rim diameter.
What size rim does a 2010 Mercedes-Benz CL550 use?
A 2010 Mercedes-Benz CL550 can use 18-inch, 19-inch, or 20-inch rims, depending on the sub-model and wheel package. The 255/45R18 fitment uses an 18-inch rim, the 255/40R19 fitment uses a 19-inch rim, and the 255/35R20 fitment uses a 20-inch rim.
Rim diameter should be verified before anything else because the tire sizes are tied directly to those wheel diameters. Once that is confirmed, the next checks are wheel width, clearance, and whether the car still has its intended configuration, especially on a sport-package CL550 where more than one rim size is part of the fitment picture.
Do all 2010 Mercedes-Benz CL550 sub-models use the same tire size?
No, the covered 2010 Mercedes-Benz CL550 sub-models do not all use the same tire size. The CL550 4Matic uses 255/45R18, while the CL550 4Matic w/Sport Pkg. uses 255/40R19 or 255/35R20.
That difference matters because the tire decision starts with sub-model and wheel identification, not with brand preference. Once the exact setup is confirmed, then it becomes easier to compare the available radial choices by series, sidewall appearance, and rim-width compatibility without risking a mismatch between tire and wheel diameter.
Choosing the Right Tire
What should I consider when choosing a tire for a 2010 Mercedes-Benz CL550?
Start with the correct tire size for the exact CL550 configuration: 255/45R18 for the 4Matic, or 255/40R19 and 255/35R20 for the 4Matic w/Sport Pkg. From there, compare the radial tire series available in that size, along with sidewall style and rim-width compatibility where it is stated.
A grand-touring coupe like the CL550 benefits from choosing a tire that matches how the car will actually be used and presented. Some owners will want a straightforward blackwall performance look, while others may prefer RWL or redline styling, but the tire still needs to suit the actual wheel dimensions and overall setup on the car.
What sidewall styles are available for 2010 Mercedes-Benz CL550 tires?
Tires for the 2010 Mercedes-Benz CL550 are available in blackwall, RWL, and redline sidewall styles, depending on size and product line. Blackwall choices appear across BFGoodrich and Nitto offerings, while Pro-Trac Street Pro III adds raised white letter and redline alternatives in the applicable sizes.
The best sidewall choice depends on whether the goal is a more understated modern appearance or a more customized visual statement. Sidewall styling does not change the need to match the correct 18-, 19-, or 20-inch fitment, so appearance should be considered only after the size and wheel package have been confirmed.
What brands offer tires for the 2010 Mercedes-Benz CL550?
BFGoodrich, Nitto, and Pro-Trac all offer radial tires for the 2010 Mercedes-Benz CL550 in the covered sizes. Depending on wheel diameter, the available lines include BFGoodrich g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, Nitto NT555 G2, and Pro-Trac Street Pro III.
Brand choice is only part of the decision, since each line also brings differences in series character and sidewall presentation. It helps to narrow the search by the car's exact tire size first, then compare the options in that size by appearance, rim-width range where stated, and the kind of driving the CL550 will actually see.
Restoration & Appearance
Which tire should I choose for a period-style 2010 Mercedes-Benz CL550?
A period-style 2010 Mercedes-Benz CL550 tire choice starts with keeping the correct modern metric radial size for the car's actual wheel package. Once the size is right, the appearance decision usually comes down to whether the coupe looks best with a conventional blackwall presentation or a more distinctive RWL or redline treatment.
Because this is a newer luxury-performance coupe, preserving the intended stance and wheel diameter often matters more visually than chasing a nostalgic tire format. Owners who want a highly original presentation should compare the car against model-specific reference photos, build documentation, or marque resources before choosing a sidewall style for a restoration-minded project.
How does tire construction affect the appearance of a restored 2010 Mercedes-Benz CL550?
Tire construction is straightforward on the 2010 Mercedes-Benz CL550 because the primary fitments here are radial tires across all three sizes. That means the visual impact comes less from choosing between bias-ply and radial construction and more from selecting the correct profile, wheel diameter, and sidewall style for the car's configuration.
On a restored or carefully preserved CL550, the wrong rim diameter or profile will usually stand out faster than a brand change. Keeping the proper 18-, 19-, or 20-inch fitment for the specific sub-model helps maintain the car's intended proportions, while blackwall, RWL, or redline styling can then be used to fine-tune the final presentation.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2010 Mercedes-Benz CL550?
Yes, modifications can affect tire fitment on a 2010 Mercedes-Benz CL550, especially because this model already uses multiple rim diameters across its sub-models. Aftermarket wheels, suspension changes, ride-height alterations, or non-original wheel packages can all change how a 255/45R18, 255/40R19, or 255/35R20 tire sits in the car.
Even when the tire size matches one of the recognized CL550 fitments, the actual vehicle still needs a basic compatibility check. Wheel width, offset, steering movement, and fender clearance should all be reviewed on a modified car so the chosen radial tire suits the setup that is physically on the vehicle today.
What should I inspect before driving a 2010 Mercedes-Benz CL550 on new tires?
Before driving a 2010 Mercedes-Benz CL550 on new tires, inspect the wheels for the correct diameter, verify that each tire matches the intended size, and confirm proper inflation. It is also smart to look over the suspension, alignment condition, and any signs of rubbing or clearance trouble at full steering lock.
A heavier luxury coupe places real demands on its tire and wheel package, so small setup issues can become noticeable quickly. After installation, recheck pressure, watch for vibration, and look for uneven contact or interference once the car has been driven a short distance, especially if it has been sitting or recently changed to a different wheel package.
How often should tires on a 2010 Mercedes-Benz CL550 be inspected?
Tires on a 2010 Mercedes-Benz CL550 should be inspected regularly, not only for tread wear but also for age, cracking, cuts, bulges, and air loss. A low-use coupe can still develop tire-condition problems even when the tread looks acceptable, particularly if it spends long periods parked.
A routine visual check before drives and a more thorough inspection at regular service intervals is a sensible approach for this type of vehicle. Pressure should be watched closely, and any CL550 that has sat for extended periods should have its tires examined carefully before highway use, since storage time can affect condition as much as mileage.
