The 2021 Mercedes-Benz E350 sits in the modern luxury-sedan space where quiet highway manners, crisp road response, and a polished overall feel all matter. In this generation, tire choice is less about preserving a vintage construction and more about matching the car’s exact wheel and axle setup. The 2021 Mercedes-Benz E350 uses radial tires, with 18-inch and 19-inch fitments and a staggered rear size on sedan rear applications. Available choices range across BFGoodrich, Nitto, and Pro-Trac, with blackwall, redline, and raised white letter options in certain sizes. The key is confirming sub-model position and wheel diameter before narrowing the look and driving character you want.
Which Tire Size Is Right for The 2021 Mercedes-Benz E350
The 2021 Mercedes-Benz E350 uses four primary tire sizes, and the correct one depends on both wheel diameter and whether the fitment is front or rear. Two sizes are built around 18-inch wheels and two around 19-inch wheels, so the first step is confirming the exact sub-model position and the wheels currently on the car before comparing tire options.
A 245/40R19 tire uses a 245-millimeter section width, a 40-series aspect ratio, radial construction, and a 19-inch rim. On the 2021 Mercedes-Benz E350, this is one of the front or all-around fitments depending on the specific covered configuration, and it keeps the car in a modern low-profile radial format. Available options in this size come from BFGoodrich in g-Force Sport Comp 2, g-Force Comp 2 AS, and g-Force Phenom T/A series, all in blackwall form. This size is the right place to focus if your E350 is already on 19-inch wheels and uses the narrower front-style fitment.
A 245/45R18 tire carries the same 245-millimeter nominal width as the 19-inch version, but with a taller 45-series profile on an 18-inch rim. For the 2021 Mercedes-Benz E350, it serves as an 18-inch radial fitment on front or non-staggered covered positions depending on configuration. Product choices include BFGoodrich and Nitto, with blackwall sidewalls and several performance-oriented series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. This size makes sense when the car is equipped with 18-inch wheels and you want to compare brand, series, and rim-width compatibility within that setup.
A 275/35R19 tire is a wider metric radial with a 275-millimeter section width, a 35-series profile, and a 19-inch rim diameter. On the 2021 Mercedes-Benz E350, this size is tied to the covered rear sedan position, making it part of a staggered arrangement rather than a universal fitment across every configuration. BFGoodrich and Nitto options are available here, including g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2, all with blackwall styling. This is the size to evaluate when the car uses 19-inch rear wheels and needs the wider rear tire that matches that axle setup.
A 275/40R18 tire combines a 275-millimeter nominal width with a 40-series profile and radial construction on an 18-inch wheel. For the 2021 Mercedes-Benz E350, it serves as the covered 18-inch rear sedan fitment, so it should be treated as a rear-position size rather than a general all-around choice. Available selections include BFGoodrich, Nitto, and Pro-Trac, with blackwall, redline, and raised white letter sidewall treatments depending on the tire series. This size is worth close attention if your E350 has an 18-inch staggered setup and you want to balance rear fitment needs with a particular visual style.
Fitment on the 2021 Mercedes-Benz E350 depends on both sub-model and wheel position rather than one universal size across every covered configuration. Checking whether the car uses the front-size pairing or the wider rear-size pairing is essential before choosing a tire.
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2021 Mercedes-Benz E350 4Matic
The 2021 Mercedes-Benz E350 4Matic uses the 245-width front-style sizes, with radial fitments in either 245/40R19 or 245/45R18 depending on wheel diameter. Tire selection starts with confirming whether the car is on 18-inch or 19-inch wheels, then comparing available blackwall product series within that size.
The 2021 Mercedes-Benz E350 Sedan shares the 245-width radial fitments in 18-inch and 19-inch wheel packages. That keeps the decision centered on wheel diameter first, then on brand and tire-series differences once the correct size has been confirmed.
The 2021 Mercedes-Benz E350 Sedan Front uses the narrower front axle sizes, either 245/40R19 or 245/45R18 in radial construction. Choosing correctly means matching the front wheel diameter and keeping the front tire separate from the wider rear fitments used on staggered setups.
The 2021 Mercedes-Benz E350 Sedan Rear uses the wider rear sizes, either 275/35R19 or 275/40R18, both in radial construction. That makes rear tire selection especially dependent on confirming the wheel diameter and maintaining the proper front-to-rear size relationship on a staggered arrangement.
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 2021 Mercedes-Benz E350 Tires for Sale
Available 2021 Mercedes-Benz E350 tires span BFGoodrich, Nitto, and Pro-Trac, with choices across g-Force, NT555 G2, and Street Pro III series. Most fitments are blackwall, while 275/40R18 also adds redline and raised white letter options for buyers who want a more distinctive look.
Common questions for the 2021 Mercedes-Benz E350 usually come down to exact tire size, front-versus-rear fitment, 18-inch versus 19-inch wheels, and how to compare the available radial tire options by brand, sidewall style, and intended use.
Tire Size & Fitment
What tire size fits a 2021 Mercedes-Benz E350?
The 2021 Mercedes-Benz E350 uses four primary tire sizes: 245/40R19, 245/45R18, 275/35R19, and 275/40R18. The 245-width sizes are used on the front-style covered applications, while the 275-width sizes are used on the covered rear sedan fitments in staggered setups.
The practical decision starts with confirming both wheel diameter and axle position. An 18-inch E350 uses different sizes than a 19-inch car, and a staggered sedan rear fitment should not be confused with the narrower front size. Checking the current wheel setup on the car is the safest first step before comparing brands or tire series.
What size rim does a 2021 Mercedes-Benz E350 use?
The 2021 Mercedes-Benz E350 uses either 18-inch or 19-inch rims, depending on the tire size and covered configuration. Sizes 245/45R18 and 275/40R18 belong on 18-inch wheels, while 245/40R19 and 275/35R19 belong on 19-inch wheels.
That makes wheel diameter the first fitment check whenever replacing tires. A 245-width tire and a 275-width tire may look related within the same model line, but the rim diameter still has to match exactly. It also helps to verify whether the car has a square or staggered arrangement before ordering a full set.
Why does the 2021 Mercedes-Benz E350 have more than one tire size?
The 2021 Mercedes-Benz E350 has more than one tire size because the covered fitments include both 18-inch and 19-inch wheel packages, along with separate front and rear sedan applications. The front-style sizes are 245/45R18 and 245/40R19, while the rear sedan sizes are 275/40R18 and 275/35R19.
That means tire selection is tied to the actual wheel package on the car, not just the model name on the trunk. Looking at the existing tire sidewall or wheel diameter is usually the quickest way to confirm what belongs on each position. This matters most on staggered cars, where front and rear sizes are intentionally different.
Choosing the Right Tire
What should I consider when choosing a tire for a 2021 Mercedes-Benz E350?
Start with the exact size already tied to your E350’s wheel diameter and axle position. The main fitment split is between 18-inch and 19-inch wheels, and some covered sedan applications use a wider rear tire than the front, so matching the existing setup is more important than comparing tread style first.
After size is confirmed, compare construction, tire series, rim-width compatibility, and any load information shown for the specific tire. A blackwall performance radial may suit one owner, while another may prefer a different series or sidewall treatment in the rear 275/40R18 size. Keeping the car’s actual wheel package in mind helps narrow the choices quickly.
What sidewall styles are available for 2021 Mercedes-Benz E350 tires?
Blackwall is the most common sidewall style across the available 2021 Mercedes-Benz E350 tire sizes. In the 275/40R18 rear size, there are also redline and raised white letter options through the Pro-Trac Street Pro III series.
Sidewall style will not change the basic size requirement, but it can noticeably change the car’s presentation. Blackwall keeps a modern, understated look, while redline and raised white letter choices add a more assertive visual character. The key is making sure the preferred sidewall treatment is offered in the exact rear or front size your E350 uses.
What brands offer tires for the 2021 Mercedes-Benz E350?
Available tires for the 2021 Mercedes-Benz E350 come from BFGoodrich, Nitto, and Pro-Trac. BFGoodrich appears across all four fitment sizes, Nitto is offered in several 18-inch and 19-inch sizes, and Pro-Trac appears in the 275/40R18 size with alternate sidewall treatments.
Brand choice should still come after the correct size and position have been confirmed. Once that part is settled, it becomes easier to compare series such as g-Force, NT555 G2, or Street Pro III based on the look and product character you want. Keeping the comparison within one exact size avoids crossing over into a tire that belongs on another axle or wheel diameter.
Restoration & Appearance
Which tire should I choose for a period-style 2021 Mercedes-Benz E350?
A period-style approach on a 2021 Mercedes-Benz E350 usually starts with keeping the correct modern radial size for the car’s actual wheel package. Since this E350 uses contemporary metric radial sizes, the appearance decision is less about vintage construction and more about choosing a tire series and sidewall treatment that suits the car’s overall look.
Blackwall is the most conservative presentation across the available fitments, while 275/40R18 opens the door to redline or raised white letter styling on the rear. Owners aiming for a more authentic showroom-era appearance should compare that visual change carefully against the car’s trim, wheels, and intended presentation before making the switch.
How does tire construction affect the appearance of a restored 2021 Mercedes-Benz E350?
Tire construction is straightforward on the 2021 Mercedes-Benz E350 because the available primary fitments are radial across all listed sizes. That means the visible appearance difference comes more from profile, sidewall treatment, and tire series than from a bias-ply-versus-radial decision, which is often a larger issue on older collector vehicles.
For this model, the most noticeable visual choices are blackwall versus specialty sidewall treatments in 275/40R18. A redline or raised white letter tire gives the car a more customized presentation than a standard blackwall. Matching that look to the wheel diameter and front-to-rear setup keeps the finished result more coherent than choosing on sidewall style alone.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2021 Mercedes-Benz E350?
Yes. Modifications such as aftermarket wheels, suspension changes, ride-height changes, or body alterations can affect tire fitment on a 2021 Mercedes-Benz E350 even when the tire size itself is one of the correct factory-style dimensions. This matters most on staggered applications, where front and rear clearances are already handling different widths.
Wheel diameter is only one part of the equation. Rim width, offset, and available clearance at the fender, suspension, and steering components should also be checked any time the car no longer uses its original-style wheel setup. That extra verification becomes especially important when moving between 18-inch and 19-inch packages or replacing only one axle pair.
What should I inspect before driving a 2021 Mercedes-Benz E350 on new tires?
Inspect the wheel size, the installed front and rear tire sizes, and the overall condition of the wheels before driving. It also helps to confirm proper inflation, look for any shipping or installation damage, and make sure the tires clear the fenders and suspension components through normal steering and suspension movement.
A 2021 Mercedes-Benz E350 can use either a square-like front-size pairing or a staggered front-and-rear arrangement, so verifying placement matters as much as checking the tire itself. A short test drive followed by a second visual inspection is worthwhile. Watching for vibration, rubbing, uneven seating, or unexpected air loss can catch a setup problem early.
What should I check before a longer drive in a 2021 Mercedes-Benz E350?
Before a longer drive, check tire pressure, tread condition, and any visible cracking, bulges, cuts, or signs of air loss. On a 2021 Mercedes-Benz E350, it is also smart to confirm that the front and rear tires are in the correct sizes for the wheel package, especially if the car uses the wider rear sedan fitment.
Longer highway use can magnify problems that seem minor around town. Uneven wear, a mismatched rear size, or a wheel issue may not be obvious at first but can affect ride quality and stability. Looking over the tires after the car has been parked for a while, rather than only at fuel stops, makes those condition checks more meaningful.
