2018 Mercedes-Benz E400 Tires

The 2018 Mercedes-Benz E400 uses four primary tire sizes: 245/45R18, 245/40R19, 275/40R18, and 275/35R19. The 245-section sizes are used for the front fitment pattern, while the wider 275-section sizes are used at the rear on staggered applications, with both 18-inch and 19-inch wheel diameters appearing across the model range.

That means the first step is not simply choosing a tire by model name, but confirming both axle position and wheel diameter. A front 245 size and a rear 275 size serve different roles, and an 18-inch setup should stay matched to its corresponding front and rear pair unless the vehicle has been changed from its current wheel package.

The 2018 Mercedes-Benz E400 uses either 18-inch or 19-inch rims, depending on the tire size and wheel package on the vehicle. The 245/45R18 and 275/40R18 sizes fit 18-inch rims, while 245/40R19 and 275/35R19 fit 19-inch rims.

Rim diameter is the most important fitment check because the E400 uses more than one wheel size across its covered configurations. Tire width and profile also differ between front and rear positions, so the safest approach is to read the tire sidewall or wheel marking on the car and match the replacement tire to that exact installed setup.

The 2018 Mercedes-Benz E400 has more than one tire size because it appears with both 18-inch and 19-inch wheel packages, and it uses a staggered layout with narrower front tires and wider rear tires. That creates two front sizes and two rear sizes rather than one universal fitment.

For the buyer, that means tire selection depends on the actual wheels on the car, not just the year and model badge. Coupe, cabriolet, sedan, wagon, and front or rear position can all affect what belongs there, so matching the exact mounted size is more useful than assuming every E400 uses the same tire.

Choosing a 245/45R18 tire for a 2018 Mercedes-Benz E400 starts with confirming that the car uses the 18-inch front fitment. In this size, available options include BFGoodrich and Nitto blackwall radials across series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2.

After the size is confirmed, compare the tire's intended character, rim-width range, and any visible differences such as series design rather than treating all 245/45R18 tires as identical. It also helps to keep the front choice in balance with the rear tire setup already on the car, especially if the E400 is driven regularly at highway speeds.

Most 2018 Mercedes-Benz E400 tire options in these sizes use a blackwall sidewall style. In 275/40R18, there are also redline and raised white letter choices through the Pro-Trac Street Pro III series, giving that rear size a broader appearance range than the other fitments.

Sidewall style is mainly an appearance decision once the correct size, axle position, and rim diameter are settled. A blackwall tire keeps a contemporary look that suits the E400's original design language, while redline or raised white letter styling creates a more customized presentation that should be chosen intentionally rather than as a casual substitute.

Tires for the 2018 Mercedes-Benz E400 are available from BFGoodrich, Nitto, and Pro-Trac within the sizes used on this vehicle. BFGoodrich appears across all four primary sizes, Nitto is available in several 18-inch and 19-inch fitments, and Pro-Trac appears in 275/40R18 with distinctive sidewall treatments.

Brand choice should come after the fitment basics are locked in. Once the correct size and wheel diameter are confirmed, the useful comparison points become tire series, sidewall style, rim-width compatibility, and how the tire's overall presentation fits the way the car is driven and maintained.

A period-style approach for a 2018 Mercedes-Benz E400 usually starts with staying in the exact installed size and using a blackwall radial that matches the car's modern luxury-performance character. Since this is a late-model Mercedes rather than a vintage restoration candidate, the visual goal is typically a clean, contemporary presentation rather than an antique or muscle-era tire look.

That makes correct front or rear sizing and wheel diameter more important than chasing novelty. Owners who want a more customized appearance can consider the redline or raised white letter 275/40R18 choices where that size applies, but those treatments change the car's visual tone and should be chosen with the whole wheel-and-tire package in mind.

On the 2018 Mercedes-Benz E400, tire construction does not create a bias-ply-versus-radial styling decision because the vehicle uses radial tire sizes throughout. The appearance difference comes more from sidewall treatment, wheel diameter, and the proportion created by the 18-inch or 19-inch tire profile than from construction type itself.

For an owner bringing the car back to a clean, original-looking presentation, matching the exact size on the vehicle usually preserves the intended stance better than experimenting with alternate dimensions. Blackwall radials keep the most understated look, while redline or raised white letter choices in 275/40R18 move the car toward a visibly customized finish.

Yes, modifications can affect tire fitment on a 2018 Mercedes-Benz E400. Changes such as aftermarket wheels, altered offsets, suspension lowering, spring changes, or bodywork can influence whether the original 245-section front and 275-section rear sizes still provide the same clearance they had on the stock setup.

That is especially important on a car that already uses staggered widths and more than one rim diameter. Even when the sidewall shows a familiar size, the wheel itself may differ in width or position, so checking inside clearance, fender clearance, and steering travel before mounting new tires is a smart step.

Before driving a 2018 Mercedes-Benz E400 on new tires, confirm that each tire matches the correct front or rear size and the correct 18-inch or 19-inch rim diameter. It is also wise to check inflation pressure, wheel condition, lug hardware, and whether the tires clear suspension and body components through a full steering sweep.

A short initial road test helps catch any vibration, rubbing, or balance issue before a longer trip. Recheck pressure after the first drives and keep an eye on uneven wear, because a staggered setup can hide alignment or suspension problems until the new tires begin to show irregular tread behavior.

Tires on a 2018 Mercedes-Benz E400 should be inspected regularly, especially if the car sees seasonal use, extended storage, or occasional high-speed highway driving. Look for tread wear, cracking, cuts, bulges, punctures, and pressure loss, and compare front and rear wear patterns since the car uses different sizes on staggered setups.

Frequent visual checks matter because performance-oriented low-profile tires can show damage or wear that is easy to miss until ride quality changes. It also helps to inspect the tires before any longer drive, after storage, and whenever wheel or suspension work has been done, since small setup changes can affect clearance and wear.