The 2018 Mercedes-Benz E300 sits in the modern luxury-sedan sweet spot, blending the composed road manners and upscale character expected of the E-Class with everyday usability. Buyers usually arrive here already knowing the car can wear more than one wheel and tire package, and that matters because this exact model uses 225/55R17, 245/45R18, or 245/40R19 radial tires depending on the setup. That opens the door to different visual and driving directions, from contemporary blackwall performance-oriented choices to Silvertown Radial versions with redline or wide whitewall styling in 17-inch fitment. The right decision starts with confirming the actual wheel diameter on the car before comparing series, sidewall look, and road-use priorities.
Which Tire Size Is Right for The 2018 Mercedes-Benz E300
The 2018 Mercedes-Benz E300 uses three primary tire sizes, all in radial construction, spread across 17-inch, 18-inch, and 19-inch wheel fitments. Both the E300 Sedan and E300 4Matic Sedan can use these sizes, so the first step is confirming which wheel diameter is actually on the car before comparing tire series, sidewall style, and overall tire character.
225/55R17 is a metric radial size in which 225 identifies the nominal section width in millimeters, 55 is the aspect ratio, R indicates radial construction, and 17 is the wheel diameter in inches. On the 2018 Mercedes-Benz E300, this size suits a 17-inch wheel package and gives buyers a wider appearance range than the larger sizes. Available choices include blackwall performance-oriented tires as well as BFGoodrich Silvertown Radial versions with wide whitewall or redline styling. It is the size to examine closely if the goal is balancing modern fitment with a more distinctive visual presentation.
245/40R19 is a metric radial size where 245 denotes nominal width in millimeters, 40 is the aspect ratio, R marks radial construction, and 19 matches the wheel diameter in inches. For the 2018 Mercedes-Benz E300, this size belongs to a 19-inch setup and keeps the tire choice focused on blackwall, performance-style offerings. BFGoodrich options in the g-Force family and g-Force Phenom T/A provide the main distinctions within this fitment. This size is worth choosing only after confirming the car is equipped with 19-inch wheels, since the shorter profile and larger rim package differ from the 17-inch and 18-inch arrangements.
245/45R18 follows the same modern metric radial convention: 245 is the nominal width in millimeters, 45 is the aspect ratio, R indicates radial construction, and 18 is the wheel diameter in inches. On the 2018 Mercedes-Benz E300, this size fits an 18-inch wheel package and offers a broader mix of product series than the 19-inch fitment. Buyers can compare BFGoodrich g-Force lines, g-Force Phenom T/A, and the Nitto NT555 G2, all in blackwall form. It is a useful middle-ground size for owners confirming an 18-inch setup and then narrowing the choice by tire series and specification details.
Fitment is straightforward here because the covered E300 sub-models share the same three tire-size paths rather than using sub-model-specific sizes. Checking the exact sub-model still helps, but confirming the wheel diameter on the car is the more important step before selecting a tire.
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2018 Mercedes-Benz E300 4Matic Sedan
The 2018 Mercedes-Benz E300 4Matic Sedan uses the same radial tire-size choices as the other covered E300 sedan configuration, so the key fitment question is not trim-specific sizing. Selection comes down to identifying whether the car is on 17-inch, 18-inch, or 19-inch wheels and then choosing the preferred tire series or sidewall treatment within that size.
The 2018 Mercedes-Benz E300 Sedan shares the same three radial size options used across this model grouping, which keeps sub-model fitment relatively simple. The practical decision is confirming the actual wheel package first, then comparing available blackwall performance tires or, in 225/55R17, more appearance-driven options such as redline or wide whitewall styling.
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 2018 Mercedes-Benz E300 Tires for Sale
Available 2018 Mercedes-Benz E300 tire choices center on radial blackwall performance tires from BFGoodrich and Nitto, with multiple g-Force series in 17-, 18-, and 19-inch fitments. The 225/55R17 size also opens up BFGoodrich Silvertown Radial options with redline or wide whitewall styling for a more custom appearance.
These FAQs focus on the tire sizes used on the 2018 Mercedes-Benz E300, how wheel diameter affects selection, and how to compare available radial, sidewall, and product options before putting the car back on the road.
Tire Size & Fitment
What tire size fits a 2018 Mercedes-Benz E300?
The 2018 Mercedes-Benz E300 uses three primary tire sizes: 225/55R17, 245/45R18, and 245/40R19. All three are radial sizes, and both the E300 Sedan and E300 4Matic Sedan use the same group of fitments rather than having separate sub-model-specific tire sizing.
The important next step is confirming which wheel package is actually on the car, since these sizes do not share the same rim diameter. A 17-inch, 18-inch, or 19-inch wheel setup changes the correct tire size immediately, so the best approach is to verify the wheel diameter first and then compare tire series, sidewall style, and other product details within that exact size.
What size rim does a 2018 Mercedes-Benz E300 use?
A 2018 Mercedes-Benz E300 can use 17-inch, 18-inch, or 19-inch rims, depending on the wheel and tire package on the car. Those wheel diameters pair with 225/55R17, 245/45R18, and 245/40R19 tires respectively, all in radial construction.
That makes wheel confirmation more important than trim confirmation, because both covered E300 sedan versions share the same size range. Looking only at the model name is not enough when ordering tires for this car. Checking the existing sidewall, measuring the wheel, or verifying the installed package helps prevent choosing a tire that matches the car generally but not the wheel diameter actually fitted.
Do all 2018 Mercedes-Benz E300 sub-models use the same tire size?
The covered 2018 Mercedes-Benz E300 sub-models share the same overall tire-size choices: 225/55R17, 245/45R18, and 245/40R19. That includes both the E300 Sedan and the E300 4Matic Sedan, and all of those fitments are radial.
Shared fitment options do not mean every individual car uses all three sizes at once. The deciding factor is the wheel package installed on that specific sedan. Once the actual wheel diameter is confirmed, tire selection becomes much simpler, and the buyer can focus on the available product mix in that size, such as blackwall performance options or, in the 17-inch size, more appearance-oriented sidewall treatments.
Choosing the Right Tire
What should I consider when choosing a tire for a 2018 Mercedes-Benz E300?
Start with the correct size for the wheel on the car: 225/55R17, 245/45R18, or 245/40R19. Since all of the primary fitments are radial, the main decision is usually not construction type but tire character, available series, and whether the car is meant to keep a standard modern look or take on a more custom visual style.
After size confirmation, compare rim-width compatibility, load figures where stated, and the product families available in that fitment. The 17-inch size offers the broadest appearance choice because it includes Silvertown Radial options with wide whitewall and redline styling, while the 18-inch and 19-inch sizes stay focused on blackwall performance-oriented tires. Intended use and wheel package should guide the final decision.
What sidewall styles are available for 2018 Mercedes-Benz E300 tires?
Sidewall style depends on the tire size selected for the 2018 Mercedes-Benz E300. Blackwall options are available across all three primary sizes, while the 225/55R17 fitment also offers BFGoodrich Silvertown Radial versions with redline and wide whitewall sidewall treatments.
That means sidewall appearance is tied directly to wheel package as much as tire brand or series. Buyers wanting a more conventional late-model presentation can stay with blackwall tires in any of the three sizes. Buyers looking for a more custom or nostalgic visual effect will want to focus on the 17-inch setup, since the larger E300 fitments shown here do not carry the same sidewall-style variety.
What brands offer tires for the 2018 Mercedes-Benz E300?
BFGoodrich appears across all three primary sizes for the 2018 Mercedes-Benz E300, covering multiple g-Force lines, g-Force Phenom T/A, and Silvertown Radial in the 17-inch fitment. Nitto is also available in 245/45R18 with the NT555 G2, giving the 18-inch size an extra brand choice.
Brand is only one part of the decision, because availability changes by size and not every series appears in every wheel diameter. It helps to narrow the search by the car's actual tire size first, then compare sidewall style, rim-width specification, weight, and load details where shown. That approach keeps the choice grounded in fitment instead of assuming the same brand mix exists across all E300 setups.
Restoration & Appearance
Which tire should I choose for a period-style 2018 Mercedes-Benz E300?
A period-style approach on a 2018 Mercedes-Benz E300 usually starts with the installed wheel diameter and then moves to the available appearance options in that exact size. The most visually distinctive path here is 225/55R17, where BFGoodrich Silvertown Radial choices include redline and wide whitewall sidewalls alongside more conventional blackwall tires.
That does not make any one option factory-correct for every E300, but it does give owners a way to shape the car's presentation without leaving the proper size family. Buyers who want a more restrained modern look can stay with blackwall tires, while those building a custom-flavored sedan can examine the 17-inch sidewall treatments and confirm wheel diameter before committing to the look.
How does tire construction affect the appearance of a restored or customized 2018 Mercedes-Benz E300?
On the 2018 Mercedes-Benz E300, the primary fitments are already radial, so the visual difference comes less from switching construction and more from the tire series and sidewall treatment available within the correct size. Blackwall tires keep a contemporary appearance, while the 225/55R17 fitment adds redline and wide whitewall choices that noticeably change the car's character.
That makes wheel package and sidewall selection the major appearance decisions for this model. A customized E300 can take on a very different visual tone depending on whether it wears 17-inch Silvertown Radials or larger blackwall performance tires. Anyone aiming for a very specific presentation should confirm the actual wheel setup first, then match the tire's look to the overall build direction.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Mercedes-Benz E300?
Yes. A 2018 Mercedes-Benz E300 may share its basic tire-size range across sub-models, but aftermarket wheels, altered offsets, lowering, suspension changes, or body modifications can all change what clears the car properly. That matters whether the car is running 17-inch, 18-inch, or 19-inch wheels.
The safest approach is to treat the original size range as the starting point and then verify the actual wheel and body setup on the specific car. Clearance at full steering lock, suspension travel, and wheel-width compatibility should all be checked before moving ahead. Even when the sidewall shows one of the standard E300 sizes, modifications can still affect real-world fitment.
What should I inspect before driving a 2018 Mercedes-Benz E300 on new tires?
Before road use, inspect the wheel diameter and confirm that the new tires match the correct size for that wheel: 225/55R17, 245/45R18, or 245/40R19. It also helps to check air pressure, valve stems, wheel condition, tread seating, and any visible signs of rubbing once the tires are mounted.
A short test drive should be followed by another visual check for clearance at the fenders and during steering movement, especially if the car has non-stock wheels or suspension changes. Tire age, storage history, and slow air loss are also worth watching on a low-use vehicle. Catching those issues early helps keep a fresh tire installation from turning into a fitment problem later.
How often should tires on a 2018 Mercedes-Benz E300 be inspected?
Tires on a 2018 Mercedes-Benz E300 should be inspected regularly, not just when tread looks worn. Routine checks for pressure loss, cuts, bulges, uneven wear, and sidewall damage are worthwhile on any driver, and they matter even more if the car sits for long stretches between uses.
Cars with multiple possible wheel packages benefit from an occasional confirmation that the installed tire size still matches the wheel and setup currently on the vehicle. Storage conditions also play a role, since heat, sunlight, and long idle periods can affect tire condition over time. A careful walk-around before longer drives is a smart habit, especially after seasonal storage or recent wheel changes.
