The 2024 Mercedes-Benz CLA45S AMG brings compact AMG performance into a four-door coupe shape, with sharp styling and the kind of road manners that make tire choice especially important. On a car like this, wheel and tire setup are part of the vehicle’s character, not just a maintenance item. The CLA45S AMG uses radial fitments in two sizes, 245/40R18 and 255/35R19, with fitment varying by configuration. Available choices include performance-oriented blackwall tires, along with redline and raised white letter options in 245/40R18. The key is confirming the exact sub-model and wheel diameter first, then choosing the tire style and series that best suit the car’s appearance and intended use.
Which Tire Size Is Right for The 2024 Mercedes-Benz CLA45S AMG
Two tire sizes apply to the 2024 Mercedes-Benz CLA45S AMG, and the first step is confirming the exact sub-model and wheel diameter. This fitment uses radial construction throughout, but 245/40R18 fits the 18-inch setup while 255/35R19 fits the 19-inch setup, and the AMG Aerodynamics Package centers the decision on the 19-inch size.
245/40R18 is a metric radial size in which 245 is the nominal section width in millimeters, 40 is the aspect ratio, R identifies radial construction, and 18 is the wheel diameter in inches. On the 2024 Mercedes-Benz CLA45S AMG, this size belongs to the 18-inch fitment and suits buyers staying with that wheel setup. Available choices include blackwall performance tires from BFGoodrich, Nitto, and M&H Racemaster, plus Pro-Trac options with redline and raised white letter styling. This size is the right place to start when the car is equipped with 18-inch wheels and appearance choice matters as much as everyday road use.
255/35R19 is a metric radial size with a 255-millimeter nominal section width, a 35-series profile, radial construction, and a 19-inch rim diameter. On the 2024 Mercedes-Benz CLA45S AMG, this size is tied to the 19-inch setup and is also the fitment used on the 4Matic w/AMG Aerodynamics Pkg. Available products in this size focus on blackwall performance offerings from BFGoodrich across several g-Force series. It is the size to evaluate when the car has 19-inch wheels and the priority is matching the existing wheel diameter and low-profile performance presentation.
Sub-model fitment matters on the 2024 Mercedes-Benz CLA45S AMG because not every configuration uses the same wheel and tire setup. The standard 4Matic can use either of the two radial sizes, while the AMG Aerodynamics Package points directly to the 19-inch fitment.
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2024 Mercedes-Benz CLA45S AMG 4Matic
The 2024 Mercedes-Benz CLA45S AMG 4Matic uses radial tires and can be found with either the 245/40R18 or 255/35R19 fitment. Tire selection starts with confirming whether the car has 18-inch or 19-inch wheels, then narrowing the choice by sidewall style, series, and intended driving use.
The 2024 Mercedes-Benz CLA45S AMG 4Matic w/AMG Aerodynamics Pkg. uses the 255/35R19 radial fitment. That makes the decision more straightforward, with the focus shifting from size identification to choosing among the available blackwall performance tire series for the 19-inch wheel 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 2024 Mercedes-Benz CLA45S AMG Tires for Sale
Available tires for the 2024 Mercedes-Benz CLA45S AMG center on radial performance choices from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac. Depending on size, buyers can compare blackwall, redline, and raised white letter sidewalls along with several g-Force, Street Pro III, Drag Radial, and NT555 G2 series options.
Tire questions for the 2024 Mercedes-Benz CLA45S AMG usually come down to identifying the correct wheel diameter first, then comparing radial tire options, sidewall styles, and practical fitment checks before road use.
Tire Size & Fitment
What tire size fits a 2024 Mercedes-Benz CLA45S AMG?
The 2024 Mercedes-Benz CLA45S AMG uses two radial tire sizes: 245/40R18 and 255/35R19. The standard CLA45S AMG 4Matic can use either size depending on wheel setup, while the CLA45S AMG 4Matic w/AMG Aerodynamics Pkg. uses 255/35R19.
The practical step is confirming which wheels are actually on the car before choosing a tire. An 18-inch wheel requires the 245/40R18 fitment, and a 19-inch wheel requires the 255/35R19 fitment, so the tire choice should follow the wheel diameter already in place.
What size rim does a 2024 Mercedes-Benz CLA45S AMG use?
The 2024 Mercedes-Benz CLA45S AMG uses either an 18-inch or 19-inch rim, depending on configuration. The 245/40R18 size matches an 18-inch wheel, and the 255/35R19 size matches a 19-inch wheel.
Wheel diameter is the first fitment checkpoint because the tire bead must match the rim exactly. Once diameter is confirmed, it also helps to check the actual wheel width on the car, especially if the vehicle has been changed from its original wheel setup.
Do all 2024 Mercedes-Benz CLA45S AMG sub-models use the same tire size?
No, the covered sub-models do not all use the same tire size. The CLA45S AMG 4Matic can use either 245/40R18 or 255/35R19, while the CLA45S AMG 4Matic w/AMG Aerodynamics Pkg. uses 255/35R19.
That difference means the exact sub-model and wheel package should be confirmed before comparing products. It also explains why two owners shopping for the same year and model may need different tires, even though both vehicles are 2024 Mercedes-Benz CLA45S AMG variants.
Choosing the Right Tire
What should I consider when choosing a tire for a 2024 Mercedes-Benz CLA45S AMG?
Start with the correct size for the wheel diameter on the car: 245/40R18 for the 18-inch setup or 255/35R19 for the 19-inch setup. From there, compare radial tire series, sidewall style, rim-width compatibility, load figures where given, and the intended use of the vehicle.
A street-driven CLA45S AMG may call for a different choice than a car built around a more specialized use. It also helps to match the tire’s character to the look you want, since some 18-inch options are available in blackwall, redline, or raised white letter form.
What sidewall styles are available for 2024 Mercedes-Benz CLA45S AMG tires?
Sidewall style depends on the tire size. In 245/40R18, available styles include blackwall, redline, and RWL, while the 255/35R19 fitment shown here centers on blackwall performance tires.
That gives the 18-inch fitment more visual variety for owners who want a different presentation without changing size. A redline or raised white letter tire changes the look of the car noticeably, so the best choice comes down to whether appearance or a more understated blackwall finish is the priority.
What brands offer tires for the 2024 Mercedes-Benz CLA45S AMG?
Tires for the 2024 Mercedes-Benz CLA45S AMG are available from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac. Brand choice varies by size, with the 245/40R18 fitment showing the broadest mix and the 255/35R19 fitment focused on BFGoodrich offerings.
Brand is only one part of the decision, so it helps to compare the tire series and sidewall treatment within the correct size. Two tires from different brands may suit very different goals, especially when one is oriented toward drag use and another is aimed at general performance street driving.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2024 Mercedes-Benz CLA45S AMG?
Yes, modifications can affect tire fitment on a 2024 Mercedes-Benz CLA45S AMG. Aftermarket wheels, altered wheel widths, suspension changes, lowering, or body modifications can all change how a 245/40R18 or 255/35R19 tire sits in the wheel opening.
Even when the tire size is correct on paper, clearance at the strut, fender, and steering range should still be checked on a modified car. The safest approach is to confirm actual wheel diameter and width first, then inspect for rubbing points before regular road use.
What should I inspect before driving a 2024 Mercedes-Benz CLA45S AMG on new tires?
Before driving, inspect tire pressure, bead seating, wheel fastener torque, and visible clearance around the suspension and fenders. It is also worth checking that the tire size matches the wheel diameter and that there are no cuts, bulges, or shipping damage before the car goes back into service.
A short, careful road test can help confirm that nothing contacts under steering or compression. After the first miles, recheck pressure and give the tires another visual inspection, especially if the car uses aftermarket wheels or a different tire series than the previous set.
How often should tires on a 2024 Mercedes-Benz CLA45S AMG be inspected?
Tires on a 2024 Mercedes-Benz CLA45S AMG should be inspected regularly, not just when tread looks low. Pressure, tread wear, cuts, punctures, sidewall damage, and uneven wear patterns are all worth checking, especially on a performance-oriented car with low-profile radial tires.
Cars that are driven infrequently still need attention because age, storage conditions, and slow air loss can affect tire condition between outings. A visual check before drives and a more complete inspection at regular service intervals helps catch problems early and keeps the fitment working as intended.
