The 2014 Mercedes-Benz CL63 AMG sits at the intersection of full-size grand touring luxury and modern AMG performance, blending coupe styling with the kind of power and road presence expected from Mercedes-Benz’s flagship two-door cars of the era. Tire selection on this car centers on a staggered radial setup, with front and rear sizes differing and with fitment offered in either 19-inch or 20-inch wheel diameters. That means the real choice is not just brand, but also wheel size, sidewall treatment, and tire series. Getting the right combination matters for maintaining the CL63 AMG’s intended stance, balance, and clearance.
Which Tire Size Is Right for The 2014 Mercedes-Benz CL63 AMG
The 2014 Mercedes-Benz CL63 AMG uses four primary tire sizes, and the right one depends first on whether the car has 19-inch or 20-inch wheels and whether you are selecting a front or rear tire. All of these are radial metric sizes, but the front tires use 255-width fitments while the rears use 275-width fitments, so confirming wheel diameter and axle position comes before comparing brands or sidewall styles.
255/35R20 is a metric radial size with a 255-millimeter section width, a 35-series aspect ratio, and a 20-inch rim diameter. On the 2014 Mercedes-Benz CL63 AMG, this size serves the front position on the 20-inch wheel setup, so it is part of the car’s staggered fitment rather than a universal size for every corner. Available choices include BFGoodrich, Nitto, and Pro-Trac options, with Blackwall, raised white letter, and Redline sidewall treatments appearing in this size. It is the size to evaluate when the car is equipped with 20-inch front wheels and you want to compare appearance as well as tire series.
255/40R19 is a metric radial size that denotes a 255-millimeter width, a 40-series profile, and fitment on a 19-inch rim. For the 2014 Mercedes-Benz CL63 AMG, it is the front tire size used with the 19-inch wheel package, making wheel diameter confirmation essential before ordering. Product choices in this size include BFGoodrich and Pro-Trac offerings, with Blackwall, RWL, and Redline presentations available across several tire series. This size is the right one to consider when matching the front axle on a CL63 AMG that runs 19-inch wheels and a staggered front-to-rear setup.
275/35R20 is a metric radial size with a 275-millimeter section width, a 35-series profile, and a 20-inch rim diameter. On the 2014 Mercedes-Benz CL63 AMG, this is the rear fitment for the 20-inch wheel setup, giving the car the wider rear tire that belongs with its staggered arrangement. BFGoodrich, Nitto, and Pro-Trac products are available here, with Blackwall, RWL, and Redline sidewall choices depending on the tire series. This is the rear size to review when the car is equipped with 20-inch wheels and you want to keep the correct front-to-rear width relationship.
275/40R19 is a metric radial size that combines a 275-millimeter width with a 40-series aspect ratio on a 19-inch rim. For the 2014 Mercedes-Benz CL63 AMG, it is the rear tire size used with the 19-inch wheel setup, so it belongs on the back of the car rather than the front. Available selections include BFGoodrich and Nitto tire series, and the choices in this size are centered on Blackwall performance-oriented radials. It is the proper rear size to examine when the CL63 AMG is running 19-inch wheels and the goal is to preserve the intended staggered fitment.
Fitment on the 2014 Mercedes-Benz CL63 AMG is straightforward once axle position is identified, because the covered sub-models separate front and rear tire sizing. Checking whether you are replacing a front tire or a rear tire matters just as much as confirming whether the car has 19-inch or 20-inch wheels.
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2014 Mercedes-Benz CL63 AMG Base Front
The 2014 Mercedes-Benz CL63 AMG Base Front uses a 255-width radial tire, with fitment offered in either 255/35R20 or 255/40R19 depending on wheel diameter. Front tire selection should match the car’s actual wheel size and preserve the staggered layout that separates the narrower front fitment from the wider rear.
The 2014 Mercedes-Benz CL63 AMG Base Rear uses a 275-width radial tire, with fitment offered in either 275/35R20 or 275/40R19 depending on wheel diameter. Rear tire selection should follow the installed wheel diameter and maintain the wider rear fitment that is part of this model’s staggered setup.
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 2014 Mercedes-Benz CL63 AMG Tires for Sale
Available 2014 Mercedes-Benz CL63 AMG tire choices span BFGoodrich, Nitto, and Pro-Trac radials across several g-Force and Street Pro III series. Depending on size, buyers can compare Blackwall, RWL, and Redline sidewall styles along with different rim-width specifications and load-capacity details.
Common questions for the 2014 Mercedes-Benz CL63 AMG usually center on its staggered front and rear tire sizes, 19-inch versus 20-inch wheel fitment, available sidewall styles, and what to inspect before putting a high-performance luxury coupe back on the road.
Tire Size & Fitment
What tire size fits a 2014 Mercedes-Benz CL63 AMG?
The 2014 Mercedes-Benz CL63 AMG uses a staggered radial tire setup rather than one size at all four corners. Front fitment is either 255/35R20 or 255/40R19, while rear fitment is either 275/35R20 or 275/40R19, depending on whether the car has 20-inch or 19-inch wheels.
The key is to confirm both wheel diameter and axle position before choosing tires. A front 255-width tire and a rear 275-width tire are not interchangeable, and the 19-inch and 20-inch packages use different aspect ratios to maintain the intended overall sizing. If the car has aftermarket wheels, verify the actual wheel dimensions before selecting a replacement tire.
What size rim does a 2014 Mercedes-Benz CL63 AMG use?
A 2014 Mercedes-Benz CL63 AMG uses either 19-inch or 20-inch rims, depending on the wheel setup on the car. The 255/40R19 and 275/40R19 sizes belong to the 19-inch package, while 255/35R20 and 275/35R20 are used with 20-inch rims.
Rim diameter is the first fitment detail to confirm because a 19-inch tire cannot be mounted on a 20-inch wheel, and the reverse is also true. It is also important to check whether you are replacing a front or rear tire, since the CL63 AMG uses different widths on each axle. Looking at the sidewall of the current tire is usually the quickest way to confirm both.
Why does the 2014 Mercedes-Benz CL63 AMG have more than one tire size?
The 2014 Mercedes-Benz CL63 AMG has more than one tire size because it uses a staggered setup and was fitted with more than one wheel diameter option. The front tires are narrower than the rear tires, and each axle has one size for 19-inch wheels and another for 20-inch wheels.
That means tire selection depends on the exact wheel package already on the car. Owners should not assume that every CL63 AMG uses the same combination, especially if the wheels have been changed over time. Matching the correct front and rear sizes helps preserve the intended stance and keeps the tire-to-wheel relationship consistent with the car’s setup.
Choosing the Right Tire
What should I consider when choosing tires for a 2014 Mercedes-Benz CL63 AMG?
Start with the correct front and rear sizes for the wheel diameter actually on the car, since the 2014 Mercedes-Benz CL63 AMG uses a staggered setup. From there, compare radial tire series, sidewall style, rim-width compatibility, and any load-capacity details that matter for the way the car is driven and presented.
Appearance can matter as much as specification on a car like this, especially when some sizes offer Blackwall, RWL, or Redline choices. A buyer focused on a cleaner modern presentation may lean one direction, while someone looking for a more customized look may prefer another. Checking the wheel width before final selection is a smart step when more than one product line is available.
What sidewall styles are available for 2014 Mercedes-Benz CL63 AMG tires?
Sidewall style depends on the tire size, but the available choices for the 2014 Mercedes-Benz CL63 AMG include Blackwall, RWL, and Redline. Blackwall is the most common presentation across the four fitments, while certain Pro-Trac Street Pro III sizes add raised white letter and Redline alternatives.
That gives the car noticeably different visual personalities without changing the primary fitment itself. Blackwall usually suits a more understated modern AMG look, while RWL and Redline bring a more custom or muscle-inspired appearance. The best choice depends on the wheel diameter on the car, the exact front or rear size needed, and the kind of presentation you want from the finished setup.
What brands offer tires for the 2014 Mercedes-Benz CL63 AMG?
Available tires for the 2014 Mercedes-Benz CL63 AMG come from BFGoodrich, Nitto, and Pro-Trac, depending on the specific size. Across the four fitments, choices include several BFGoodrich g-Force series, Nitto NT555 G2 applications, and Pro-Trac Street Pro III options in select front and rear sizes.
The practical decision is less about picking a brand in the abstract and more about finding the right combination of size, series, and appearance for the car’s wheel setup. Some sizes have broader brand coverage than others, and some sidewall treatments appear only in certain product lines. Comparing the exact size first keeps the search focused on tires that belong on the correct axle and rim diameter.
Restoration & Appearance
Which tire should I choose for a period-style 2014 Mercedes-Benz CL63 AMG?
A period-style choice for a 2014 Mercedes-Benz CL63 AMG usually starts with preserving the correct staggered sizing and the correct 19-inch or 20-inch wheel diameter already on the car. From there, the decision becomes one of visual character, with Blackwall tires offering a restrained modern look and select RWL or Redline options creating a more customized presentation.
Because this is a late-model AMG coupe, appearance goals can vary widely between stock-looking and personalized builds. Matching the original wheel size on the car helps keep the proportions believable, especially on a vehicle with strong factory body lines and a wide rear stance. For owners seeking exact historical presentation, marque-specific references are still the best guide before committing to a sidewall treatment.
Does correct tire fitment matter for a 2014 Mercedes-Benz CL63 AMG restoration?
Correct tire fitment matters on a 2014 Mercedes-Benz CL63 AMG because the car’s look depends heavily on its staggered front and rear setup and on the relationship between tire profile and wheel diameter. Using the proper 255 front and 275 rear sizing in the correct 19-inch or 20-inch format helps preserve the intended proportions.
Fitment also affects how finished the restoration feels when viewed from the side, since an incorrect aspect ratio or wheel diameter can visually throw off the stance. Even on a modern collector car, tires are part of the restoration story rather than an afterthought. Checking the actual wheels on the car first is especially important if it has changed hands or has been modified over time.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2014 Mercedes-Benz CL63 AMG?
Yes, modifications can affect tire fitment on a 2014 Mercedes-Benz CL63 AMG, especially if the car has aftermarket wheels, altered offsets, suspension changes, or body modifications. Even when the tire size matches one of the original fitments, wheel width and wheel position can change how much clearance is available at the fender, suspension, and steering components.
That is why the tire size alone should not be the only checkpoint on a modified car. A lowered suspension or non-stock wheel can change front turning clearance or rear fender clearance even with a correct 255 or 275 fitment. Measuring the installed wheel setup and inspecting available space around the tire path helps avoid rubbing or interference after mounting.
What should I inspect before driving a 2014 Mercedes-Benz CL63 AMG on new tires?
Before driving a 2014 Mercedes-Benz CL63 AMG on new tires, inspect the wheels for damage, confirm the front and rear sizes match the car’s wheel package, and verify that inflation pressures are set properly for the installed tires. It is also smart to check valve stems, look for suspension wear, and make sure each tire seats correctly on the rim.
A short initial road test should include listening for rubbing, feeling for vibration, and confirming the car tracks cleanly without unusual pull. On a high-performance luxury coupe, worn alignment components can show up quickly after tire replacement, so uneven wear on the old set is worth investigating. Rechecking pressure after the first drives helps confirm that each assembly is holding air properly.
How should tires on a 2014 Mercedes-Benz CL63 AMG be maintained?
Tires on a 2014 Mercedes-Benz CL63 AMG should be maintained with regular pressure checks, routine visual inspection, and close attention to tread and sidewall condition. Because the car uses staggered sizing, maintenance starts with keeping the correct front and rear sizes in place and watching for signs of uneven wear that may point to alignment or suspension issues.
Low-use cars still need inspection because age, heat, and storage conditions can affect tire condition even when tread depth looks good. Look for cracking, cuts, bulges, or persistent air loss, and keep the car away from prolonged sunlight and ozone sources during storage when possible. A fresh inspection before longer drives is especially worthwhile on a heavy, high-powered grand touring coupe.
