The 2015 Mercedes-Benz CLS63 AMG S sits in the modern high-performance luxury category, blending the four-door coupe profile of the CLS with AMG power and all-wheel-drive capability. On a car like this, tire fitment is not a casual detail, because the staggered setup is part of how the chassis delivers its balance and grip. The 2015 Mercedes-Benz CLS63 AMG S uses radial tires in two different 19-inch sizes: 255/35R19 at the front and 285/30R19 at the rear. That makes the real decision less about finding one universal size and more about matching the correct front and rear fitment, product series, and road-use priorities before replacement.
Which Tire Size Is Right for The 2015 Mercedes-Benz CLS63 AMG S
The 2015 Mercedes-Benz CLS63 AMG S uses two primary tire sizes, both in radial construction on 19-inch rims. Tire selection starts by confirming position, because the front and rear fitments are different on the 4Matic setup. Once that is established, the next step is comparing the available tires in the correct size for construction details, product series, and wheel-width compatibility.
255/35R19 is a metric radial size in which 255 refers to nominal section width in millimeters, 35 is the aspect ratio, R identifies radial construction, and 19 is the wheel diameter in inches. On the 2015 Mercedes-Benz CLS63 AMG S, this size serves the front position in the staggered setup and should be treated as a front-specific fitment rather than a universal four-corner size. 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 maintaining the car's intended front-end balance and wheel fitment.
285/30R19 is a metric radial size with a 285-millimeter nominal section width, a 30-series profile, radial construction, and a 19-inch rim diameter. On the 2015 Mercedes-Benz CLS63 AMG S, this size is used at the rear, so it plays a different role from the narrower front tire in the staggered arrangement. Its lower-profile, wider format is part of the vehicle's rear fitment strategy and should not be selected in place of the front size without a full wheel-and-clearance review. This is the size to confirm when replacing rear tires or verifying that the car still has its intended front-to-rear setup.
Fitment on the 2015 Mercedes-Benz CLS63 AMG S is position-specific rather than shared across identical sub-model sizes. Checking whether the tire is for the 4Matic front or 4Matic rear matters first, because each position uses a different 19-inch radial size.
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2015 Mercedes-Benz CLS63 AMG S 4Matic Front
The 2015 Mercedes-Benz CLS63 AMG S 4Matic Front uses a 255/35R19 radial tire. That means front-tire replacement should focus on preserving the correct staggered fitment while comparing available series, wheel-width compatibility, and the road-use character of the tire you choose.
The 2015 Mercedes-Benz CLS63 AMG S 4Matic Rear uses a 285/30R19 radial tire. Rear-tire selection should begin with confirming that size on the car now, especially if wheels have been changed, so the wider rear fitment remains consistent with the intended front-to-rear 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 2015 Mercedes-Benz CLS63 AMG S Tires for Sale
Available 255/35R19 options center on BFGoodrich radial tires in Blackwall form, with several g-Force series to compare. The key differences in the product grid are tire series, load specification details, weight, and rim-width compatibility within the correct front size.
Questions about the 2015 Mercedes-Benz CLS63 AMG S usually center on its staggered 19-inch fitment, front-versus-rear sizing, radial tire selection, and what to inspect before putting a high-performance luxury car back on the road.
Tire Size & Fitment
What tire size fits a 2015 Mercedes-Benz CLS63 AMG S?
The 2015 Mercedes-Benz CLS63 AMG S uses a staggered tire setup with 255/35R19 at the front and 285/30R19 at the rear. Both are radial tires mounted on 19-inch wheels, and the two sizes are not meant to serve the same position on the car.
That means the first step is identifying whether you are replacing front tires, rear tires, or the full set. The correct approach is to match each axle position to its proper size, then verify the actual wheel setup on the car if it has aftermarket wheels or prior fitment changes.
What size rim does a 2015 Mercedes-Benz CLS63 AMG S use?
The primary tire fitments for the 2015 Mercedes-Benz CLS63 AMG S use a 19-inch rim diameter. Both the 255/35R19 front tire and the 285/30R19 rear tire are built around that same wheel diameter, even though the section widths and aspect ratios differ.
Rim diameter is only one part of the fitment picture on a staggered car. Wheel width and the actual front or rear position still matter, so the best practice is to confirm the wheel dimensions already on the vehicle before choosing a replacement tire in either size.
Why does the 2015 Mercedes-Benz CLS63 AMG S have more than one tire size?
The 2015 Mercedes-Benz CLS63 AMG S uses more than one tire size because it has a staggered setup: 255/35R19 in front and 285/30R19 in the rear. The front and rear positions are intentionally different, with the rear tire wider than the front.
For replacement, that means tire choice starts with axle position rather than simply matching a single size. A buyer should confirm that the car still has its intended wheel arrangement, especially if it has been modified, because staggered fitment can be affected by wheel swaps or suspension changes.
Choosing the Right Tire
What should I consider when choosing a 255/35R19 tire for a 2015 Mercedes-Benz CLS63 AMG S?
A 255/35R19 tire for the 2015 Mercedes-Benz CLS63 AMG S should first be chosen as a front-position tire in the correct radial size. Within that size, the available BFGoodrich options differ by tire series, weight, load specification details, and approved rim-width range.
The practical decision comes down to matching the tire to the wheel width already on the car and to how the car is actually used. Keeping both front tires matched in the same model is especially important on a high-performance chassis, and replacing fronts and rears as separate sizes should be done carefully.
What sidewall styles are available for 2015 Mercedes-Benz CLS63 AMG S tires?
The available 255/35R19 tires for the 2015 Mercedes-Benz CLS63 AMG S are offered in Blackwall sidewall style. That gives the car a clean modern presentation that suits the AMG luxury-performance character without introducing vintage-style sidewall treatments.
Sidewall style is not the main fitment variable on this application, but it still affects the car's finished look. Once the correct front or rear size has been confirmed, it makes sense to compare the available tire series and wheel-width specifications rather than expecting multiple visual sidewall treatments.
What tire series are available for the 2015 Mercedes-Benz CLS63 AMG S?
In 255/35R19, the 2015 Mercedes-Benz CLS63 AMG S has BFGoodrich choices in the g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A series. All are radial Blackwall tires built for the correct 19-inch front fitment size.
Comparing series is useful because it helps separate tires that share the same basic size but differ in character and specification details. A careful buyer should still keep size, wheel-width compatibility, and the correct front-position role ahead of brand familiarity or product naming when narrowing the choice.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2015 Mercedes-Benz CLS63 AMG S?
Yes, modifications can affect tire fitment on a 2015 Mercedes-Benz CLS63 AMG S, especially because the car uses a staggered 19-inch setup with different front and rear sizes. Aftermarket wheels, altered offsets, suspension changes, or ride-height adjustments can all change how much clearance the tire has.
That is why replacement should begin with the actual wheel-and-tire combination on the car today, not assumption alone. A close check of steering clearance, fender space, and front-versus-rear wheel dimensions helps prevent choosing a tire that matches the nominal size but conflicts with the vehicle's modified setup.
What should I inspect before driving a 2015 Mercedes-Benz CLS63 AMG S on new tires?
Before driving a 2015 Mercedes-Benz CLS63 AMG S on new tires, inspect the wheel condition, confirm the correct front and rear sizes, and verify that inflation pressures are set appropriately for the installed tires. It also helps to look for any suspension or alignment issues that may have contributed to the previous tire wear.
A short visual inspection can prevent larger problems on a powerful, staggered-fitment car. Check for rubbing marks, confirm that each tire is seated properly on the wheel, and watch for any vibration or pull during the first miles, since those signs can point to balance, alignment, or clearance concerns.
How often should tires on a 2015 Mercedes-Benz CLS63 AMG S be inspected?
Tires on a 2015 Mercedes-Benz CLS63 AMG S should be inspected regularly, not only for tread wear but also for air loss, sidewall damage, and uneven wear across the front and rear positions. Because the car uses a staggered setup, each axle should be checked with its own size and role in mind.
Routine inspection is especially important if the car sees spirited road use or spends long periods parked. Looking over the tires before longer drives and during normal pressure checks helps catch punctures, cracking, or abnormal wear early, when correction is simpler and less likely to affect overall vehicle behavior.
