2025 Mercedes-Benz EQS 450 Tires

The 2025 Mercedes-Benz EQS 450 uses two tire sizes: 255/45R20 and 265/40R21. Both are radial fitments, and the correct one depends on which wheel package is on the vehicle. The EQS 450 4Matic uses these same two sizes rather than a separate sub-model-only fitment.

The main fitment decision is not choosing between two interchangeable sizes, but confirming whether the car has 20-inch or 21-inch wheels. Checking the tire sidewall, measuring the wheel if needed, and verifying the actual setup on the car matters even more if the vehicle has had wheel or suspension changes since new.

The 2025 Mercedes-Benz EQS 450 uses either a 20-inch or 21-inch rim, depending on the tire size on the car. The 255/45R20 fitment uses a 20-inch rim, while the 265/40R21 fitment uses a 21-inch rim. Both are modern radial applications.

Rim diameter is the first thing to verify before comparing tire models, because a 20-inch tire and a 21-inch tire are not interchangeable. It is also helpful to confirm wheel width when reviewing individual products, since some tires list a specific approved rim-width range that can affect whether a given tire is appropriate for the wheel already on the car.

The 2025 Mercedes-Benz EQS 450 4Matic uses the same two tire sizes associated with this model core: 255/45R20 and 265/40R21. That means sub-model naming is less important here than identifying the actual wheel diameter fitted to the vehicle. Both sizes are radial constructions.

Even when sub-model fitment overlaps, tire selection should still start at the car itself. Looking at the current wheel-and-tire package is the safest way to avoid choosing a 20-inch tire for a 21-inch wheel, or vice versa. On a vehicle with aftermarket wheels, the mounted size matters more than assumptions based on trim or drivetrain alone.

Start with the correct size, then compare the available radial choices by brand, tire series, sidewall style, and wheel compatibility. In 255/45R20, options include BFGoodrich, Nitto, and Pro-Trac, with series such as g-Force Comp 2 AS, g-Force Sport Comp 2, NT555 G2, and Street Pro III. Sidewall appearance also varies.

That means the real decision is partly functional and partly visual. Some owners will want a plain Blackwall presentation, while others may prefer raised white letters or a Redline treatment. It is also worth reviewing the individual tire's approved rim-width range and any load details attached to the product before making a final selection for regular road use.

For the 255/45R20 fitment, available sidewall styles include Blackwall, RWL, and Redline. Blackwall appears across several BFGoodrich and Nitto options, while Pro-Trac Street Pro III is offered with either raised white letters or a Redline sidewall. These are all radial tire choices.

Sidewall style changes the visual character of the car more than the fitment itself, so it is mainly an appearance decision once the correct size is confirmed. A cleaner modern look usually points buyers toward Blackwall, while RWL or Redline can add a more custom or enthusiast-oriented presentation without changing the required 20-inch tire size.

Available brands for the 255/45R20 fitment include BFGoodrich, Nitto, and Pro-Trac. Those choices span several radial tire series, including g-Force Comp 2 AS, g-Force Sport Comp 2, NT555 G2, and Street Pro III. Each gives the buyer a different mix of styling and specification details within the same size.

Brand choice should come after confirming the correct tire size and wheel diameter on the car. Once size is settled, comparing the specific series, sidewall treatment, rim-width compatibility, weight, and any stated load figure is more useful than focusing on the brand name alone. That approach helps keep the selection tied to fitment and intended use.

On a 2025 Mercedes-Benz EQS 450, construction is straightforward because the primary fitments are radial tires rather than vintage-style bias-ply sizes. That means the appearance decision is less about changing construction and more about selecting the right modern radial presentation, especially in sidewall styling and overall visual character.

A restoration-minded or appearance-focused owner will usually notice sidewall treatment first. Blackwall keeps the look restrained and contemporary, while RWL or Redline can push the car toward a more customized presentation in 255/45R20. Keeping the correct size and wheel diameter matched to the car matters more than trying to create a look with an incorrect fitment.

A period-style approach on a 2025 Mercedes-Benz EQS 450 usually favors a clean Blackwall presentation, since this is a current-era luxury EV rather than a vintage collector car tied to older stripe or whitewall traditions. In 255/45R20, Blackwall is available alongside more expressive RWL and Redline options.

The right look depends on whether the goal is an understated factory-inspired appearance or a more personalized visual statement. Blackwall keeps the emphasis on the wheel and body design, while raised white letters or Redline add contrast. Either way, appearance should be chosen only after confirming the correct wheel diameter and tire size already on the vehicle.

Yes, modifications can affect tire fitment on a 2025 Mercedes-Benz EQS 450. Wheel changes, altered wheel width, offset differences, suspension lowering, and other chassis modifications can all change how a 255/45R20 or 265/40R21 tire sits in the wheel opening and how much clearance it has in operation.

That is why the actual setup on the car should be checked before selecting a replacement tire, especially if it no longer wears its original wheel package. Looking at wheel diameter first, then checking width, steering clearance, suspension travel, and fender room helps avoid choosing a tire that matches the sidewall label but not the modified vehicle.

Before driving on new tires, inspect the wheel diameter and verify that the tire size matches the wheel already on the car. It is also smart to check inflation pressure, lug hardware condition, visible tire seating at the bead, and general clearance around the suspension and fender openings once the tires are mounted.

After the first drives, look again for rubbing marks, uneven air loss, vibration, or any sign that the tire is not centered or cleared properly through steering movement. A vehicle such as the EQS 450 benefits from a careful post-installation check because large-diameter wheel packages leave less room for assumptions than for direct verification.

Tires on a 2025 Mercedes-Benz EQS 450 should be inspected regularly rather than waiting for visible problems. A quick visual check before longer drives and routine inspections during normal service intervals are both worthwhile. Look for cuts, bulges, unusual tread wear, punctures, and changes in inflation pressure from one check to the next.

Frequent inspection becomes even more important on a vehicle with low-profile, large-diameter tire fitments, because sidewall damage and wear pattern changes can be easier to miss until they become more serious. Checking condition early also helps catch alignment or clearance issues sooner, especially if the car has different wheels, suspension changes, or irregular use.