The 2020 Mercedes-Benz CLA250 belongs to the modern four-door coupe era, where compact luxury styling was paired with sharper road manners and a more aggressive wheel-and-tire presentation than many traditional sedans. For this exact model, tire selection starts with two radial fitments: 225/45R18 and 225/40R19. Both are modern metric radial sizes, so the real decision is not vintage construction versus radial, but which wheel diameter your car has and which tire series best suits your use. Available choices center on blackwall performance-oriented radials, making wheel confirmation, appearance, and intended driving use the key factors before replacement.
Which Tire Size Is Right for The 2020 Mercedes-Benz CLA250
The 2020 Mercedes-Benz CLA250 uses two primary tire sizes, and the first step is confirming whether the car is on 18-inch or 19-inch wheels. Both fitments are modern metric radial sizes, and both appear across the covered sub-models. Once wheel diameter is confirmed, the decision shifts to comparing available tire series, brand options, and rim-width compatibility within the correct size.
The size 225/40R19 identifies a metric radial tire with a 225-millimeter nominal section width, a 40-series aspect ratio, and a fitment for a 19-inch wheel. On the 2020 Mercedes-Benz CLA250, this size supports the larger wheel setup and keeps the selection focused on modern radial construction. Available choices in this size come from BFGoodrich in blackwall form, including the g-Force Comp 2 AS and g-Force Phenom T/A series. This is the size to evaluate when the car already has 19-inch wheels and you want to compare performance-oriented radial options within that exact fitment.
The size 225/45R18 is a metric radial with a 225-millimeter nominal section width, a 45-series profile, and an 18-inch rim diameter. For the 2020 Mercedes-Benz CLA250, it represents the 18-inch wheel fitment and stays within a fully modern radial sizing convention. Product choices in this size include blackwall radials from BFGoodrich and Nitto, with multiple series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. This size deserves close attention when the car is running 18-inch wheels and you want the broadest range of available tire-series choices.
Fitment is straightforward across the covered 2020 Mercedes-Benz CLA250 sub-models because both use the same two radial tire sizes. Even so, checking the exact sub-model and wheel setup still matters, since the real fitment difference comes from whether the car is equipped with 18-inch or 19-inch wheels.
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2020 Mercedes-Benz CLA250 4Matic
The 2020 Mercedes-Benz CLA250 4Matic uses the same two primary radial tire sizes found across this model range, so the key step is confirming whether the car has 18-inch or 19-inch wheels. That makes tire selection more about matching the existing wheel setup and comparing the available blackwall radial series in the correct size.
The 2020 Mercedes-Benz CLA250 Base shares the same pair of primary radial tire sizes, which keeps fitment simple but still requires wheel-diameter confirmation before choosing a replacement. Once that is settled, the decision comes down to selecting among the available tire series and checking that the tire matches the wheel's width range.
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 2020 Mercedes-Benz CLA250 Tires for Sale
Available 2020 Mercedes-Benz CLA250 tire choices focus on blackwall radial performance tires. Across 225/45R18 and 225/40R19, the product grid includes BFGoodrich and Nitto options in several g-Force and NT555 series, with fitment differences centered on wheel diameter, rim-width range, and individual tire specifications.
These FAQs focus on the two tire sizes used on the 2020 Mercedes-Benz CLA250, the difference between its 18-inch and 19-inch wheel fitments, and how to compare the available radial tire options before replacing a set.
Tire Size & Fitment
What tire size fits a 2020 Mercedes-Benz CLA250?
The 2020 Mercedes-Benz CLA250 uses two primary tire sizes: 225/45R18 and 225/40R19. Both are radial fitments, and both appear on the covered CLA250 Base and CLA250 4Matic sub-models, so the main difference is not trim level but wheel diameter.
Choosing the right one starts with checking the wheels currently on the car. An 18-inch wheel takes 225/45R18, while a 19-inch wheel takes 225/40R19. If the car has been changed from its original wheel setup, verify the actual rim diameter and width before selecting a replacement tire.
What size rim does a 2020 Mercedes-Benz CLA250 use?
A 2020 Mercedes-Benz CLA250 can use either an 18-inch or 19-inch rim, depending on the tire size installed. The 225/45R18 fitment uses an 18-inch wheel, while the 225/40R19 fitment uses a 19-inch wheel.
That makes wheel confirmation the first fitment step before buying tires. Reading the sidewall is usually the quickest check, since the final number in each size is the wheel diameter in inches. It is also wise to confirm wheel width, especially if aftermarket wheels are installed, because tire compatibility depends on more than diameter alone.
Do all 2020 Mercedes-Benz CLA250 sub-models use the same tire size?
The covered 2020 Mercedes-Benz CLA250 sub-models share the same two tire sizes rather than having separate size assignments by sub-model. Both the CLA250 Base and CLA250 4Matic can use 225/45R18 or 225/40R19, depending on the wheel setup on the vehicle.
That means sub-model identification is less important than confirming the actual wheels on the car. A Base model is not automatically an 18-inch car, and a 4Matic is not automatically a 19-inch car. Before replacing tires, match the new size to the wheel diameter already installed and check that the tire suits the rim-width range.
Choosing the Right Tire
What should I consider when choosing a 225/45R18 or 225/40R19 tire for a 2020 Mercedes-Benz CLA250?
Start with the correct size for the wheels on the car, since the 2020 Mercedes-Benz CLA250 uses either 225/45R18 or 225/40R19. From there, compare radial tire series, brand options, rim-width compatibility, and details such as weight or load figures where they are available.
The practical choice depends on how the car is used and how closely the tire matches the existing wheel setup. A CLA250 driven mainly on the street may call for different priorities than one chosen for a more performance-focused feel. Staying within the correct size and checking the wheel width keeps the comparison grounded.
What sidewall styles are available for 2020 Mercedes-Benz CLA250 tires?
The available tires for the 2020 Mercedes-Benz CLA250 are blackwall radials in both 225/45R18 and 225/40R19. That keeps the appearance modern and straightforward, with the visual differences coming more from tread and tire-series character than from sidewall treatment.
For most owners, that means sidewall style is not the deciding factor on this page. Selection is more likely to come down to wheel diameter, brand, and tire series. If appearance matters, compare the overall look of the tire on the car, but make sure the fitment details and wheel compatibility remain the first priority.
What brands offer tires for the 2020 Mercedes-Benz CLA250?
BFGoodrich and Nitto both offer tires for the 2020 Mercedes-Benz CLA250 within the covered sizes. BFGoodrich appears in both 225/40R19 and 225/45R18, while Nitto is available in the 225/45R18 fitment through the NT555 G2 series.
Brand alone should not make the decision. It helps to compare which series are offered in the exact size your car uses, along with rim-width range and any available load information. On this vehicle, the biggest dividing line is still whether the car has 18-inch or 19-inch wheels before narrowing down brand preference.
Restoration & Appearance
Which tire should I choose for a period-style 2020 Mercedes-Benz CLA250?
A 2020 Mercedes-Benz CLA250 is best approached as a modern factory-era vehicle rather than a classic restoration project, so a period-style choice usually means staying with the correct metric radial size and a clean blackwall appearance. That keeps the look aligned with the car's contemporary design language.
The best starting point is matching the existing wheel diameter and using either 225/45R18 or 225/40R19 as required. From there, compare the available radial series for the presentation you want. Owners pursuing exact showroom-era authenticity should also confirm wheel and tire details against vehicle-specific documentation for their individual car.
Does correct tire fitment matter for a 2020 Mercedes-Benz CLA250 restoration or preservation-minded build?
Correct tire fitment matters because the 2020 Mercedes-Benz CLA250 was designed around specific modern metric radial sizes tied to either 18-inch or 19-inch wheels. Using the proper size helps preserve the intended stance, wheel-to-tire proportion, and overall appearance of the car.
That matters even more on a preservation-minded car where small visual changes stand out. A different profile or wheel diameter can alter how the car sits and how full the wheel openings appear. Before replacing tires, confirm the exact wheel size on the vehicle and keep the new tires aligned with that setup.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2020 Mercedes-Benz CLA250?
Yes. A 2020 Mercedes-Benz CLA250 can be affected by wheel changes, suspension lowering, alignment changes, or other modifications that alter how a 225/45R18 or 225/40R19 tire sits in the wheel opening. Even when the tire size stays the same, the actual wheel dimensions can change compatibility.
That is why the installed setup should be checked before replacement. Look at wheel diameter, wheel width, and clearance at full steering lock and through suspension travel. A CLA250 with aftermarket wheels may need closer review than a car on its original wheel package, especially when moving between different tire series.
What should I inspect before driving a 2020 Mercedes-Benz CLA250 on new tires?
Before putting miles on new tires, confirm that the size matches the wheel diameter on the 2020 Mercedes-Benz CLA250 and check that inflation is set properly for the vehicle. It also helps to inspect the wheels for damage and make sure the tires seat evenly and clear the fenders and suspension.
A short road test is useful for catching vibration, rubbing, or any steering issue early. After the first drives, recheck pressure and look over the tire sidewalls and tread for anything unusual. That simple follow-up is especially important if the car has different wheels than expected or any recent suspension work.
How often should tires on a 2020 Mercedes-Benz CLA250 be inspected?
Tires on a 2020 Mercedes-Benz CLA250 should be inspected regularly, not just when tread looks low. Routine checks should include pressure, visible tread wear, cuts, punctures, bulges, and sidewall damage, especially since this model uses lower-profile modern radial sizes where impact damage can be easier to miss.
Frequent inspection is even more important if the car sees rough pavement, spirited driving, or long periods of storage. A quick visual check before a longer trip is a smart habit. Uneven wear can also point to alignment or suspension issues, so the tires can reveal problems beyond the rubber itself.
