2023 Mercedes-Benz Trucks Tire Fitment Guide

2023 Mercedes-Benz Trucks vehicles use 30 different tire sizes across 29 model cores, ranging from 235/55R18 on certain compact models up to 325/55R22 and 325/35R23 on specialized G-Class, GLS, and Maybach applications. Some sizes are shared across related families, such as 235/50R19 on several EQB, GLA, and GLB models, while others are highly specific to one model or one wheel package. Rim diameters span 18, 19, 20, 21, 22, and 23 inches.

That range means year and make alone are not enough to choose correctly. Start by identifying the exact model, then confirm the wheel diameter already on the vehicle, then read the full tire size from the sidewall. On AMG and upper-trim GLE, GLS, and GLC applications, also confirm whether the vehicle uses the same size front and rear or a staggered setup with different sizes at each end.

On a 2023 Mercedes-Benz Trucks tire, 255/45R20 is a metric radial size. The 255 is the nominal section width in millimeters, 45 is the aspect ratio, meaning the sidewall height is 45 percent of the section width, R identifies radial construction, and 20 is the rim diameter in inches. Within this year and make, 255/45R20 appears on certain EQE SUV, GLC300, and GLC43 AMG applications.

That code matters because a 20-inch tire cannot replace a 19-inch or 21-inch fitment, even when the model family is similar. If your vehicle currently wears 255/45R20, compare replacement choices within that exact size first, then sort by sidewall style, brand, and speed rating. For 2023 Mercedes-Benz Trucks applications in this size, available products include Blackwall and RWL versions with different speed ratings.

No, 2023 Mercedes-Benz Trucks models do not use the same tire size. Compact models such as the GLA, GLB, and EQB families use smaller 18- to 21-inch metric radials, while larger GLE, GLS, EQS SUV, and G-Class models move into wider and taller sizes on 20-, 21-, 22-, and 23-inch wheels. Several models also have multiple fitments within the same model year depending on wheel package.

For a buyer, that means the model badge is only the first step. A GLE350, GLE450 SUV, and GLE63 AMG S may look closely related, yet they can require very different front and rear sizes. Before choosing a tire, check the vehicle's door-jamb placard and the sidewall on the existing tires so you are matching the exact fitment rather than a related Mercedes-Benz Trucks SUV from the same year.

Sidewall style variety is currently concentrated in the 255/45R20 size used on certain 2023 Mercedes-Benz Trucks applications. That size is available in both Blackwall and RWL form, while the 255/40R20 option currently available for AMG compact models is Blackwall only. Across modern Mercedes-Benz luxury and AMG SUVs, Blackwall is the more typical visual match for the original contemporary look.

If appearance matters as much as fitment, sidewall style should be part of the decision early in the process. A Blackwall usually preserves the restrained factory presentation associated with late-model Mercedes-Benz vehicles, while an RWL gives a more overt performance aftermarket look. Owners of GLC43 AMG or EQE SUV models running 255/45R20 should compare sidewall appearance alongside speed rating and brand character before settling on a tire.

Among the currently covered sizes with available products, 2023 Mercedes-Benz Trucks vehicles are served by BFGoodrich, Nitto, and Pro-Trac. The 255/45R20 size is available from all three brands, while 255/40R20 currently appears with a BFGoodrich option. All of these available products are radial tires intended for modern metric fitments rather than vintage-style constructions.

Brand choice becomes a narrower question once the exact size is confirmed. If your vehicle uses 255/45R20, you have the broadest range of brand and sidewall choices in this group. If it uses 255/40R20, the choice is more focused, so the key comparison shifts to speed rating, rim-width compatibility, and whether the tire's overall character suits a compact AMG crossover or SUV application.

For 2023 Mercedes-Benz Trucks applications in 255/45R20, BFGoodrich offers multiple Blackwall choices, including products with a 101W rating and a rim-width range of 8.0 to 9.5 inches. Nitto offers a Blackwall 255/45ZR20XL 105W version, and Pro-Trac offers a 255/45ZR20 in RWL form. That means the main differences are sidewall appearance, stated load or speed details, and the rim-width information available for each product.

Those distinctions matter most when you already know your wheel size and the kind of look you want. A buyer keeping a contemporary Mercedes-Benz appearance may prefer a Blackwall option, while someone chasing a more assertive performance visual may lean toward the RWL Pro-Trac. On vehicles where wheel width falls near the edge of the acceptable range, checking the tire's approved rim-width span before purchase is especially important.

Rim-width guidance is available for the current 20-inch product-supported sizes on 2023 Mercedes-Benz Trucks vehicles. In 255/45R20, BFGoodrich products specify an approved rim-width range of 8.0 to 9.5 inches. In 255/40R20, the BFGoodrich option specifies an approved rim-width range of 8.5 to 10 inches. Those figures apply to the tire products in those exact sizes and should not be transferred to other 20-inch sizes.

The practical step is to confirm the actual wheel width before ordering if your vehicle runs one of these sizes. A tire can share the correct diameter and still be wrong for the wheel if the rim width falls outside the approved range. If your Mercedes-Benz Trucks model uses another size entirely, match rim width to that exact size and product rather than assuming all 20-inch Mercedes-Benz SUV tires use the same wheel width.

The currently available product-supported 2023 Mercedes-Benz Trucks sizes here are modern radial tires and do not show tube-type markings. That places the available 255/45R20 and 255/40R20 choices in the tubeless category typical of late-model Mercedes-Benz SUV and crossover applications. Nothing in these product-supported sizes suggests an inner-tube requirement as part of normal fitment.

That said, the wheel itself still matters. If a wheel has been replaced, damaged, or altered, sealing and valve-stem condition are just as important as the tire choice. When fitting replacement tires to any late-model Mercedes-Benz Trucks vehicle, inspect the wheels for corrosion, bead-seat damage, and proper valve hardware so the tubeless tire can perform as intended.

Original 2023 Mercedes-Benz Trucks wheels can only be used with the tire sizes that match their diameter and approved width range. This model year uses 18-, 19-, 20-, 21-, 22-, and 23-inch tire diameters, so a wheel from one package usually will not accept a tire from another simply because the vehicle family is related. Even within one model line, AMG and non-AMG setups can differ substantially.

The safest approach is to treat each wheel package as its own fitment. Check the existing tire sidewall, confirm the wheel diameter, and on staggered vehicles verify front and rear separately. If you are considering a change from one factory wheel package to another, confirm wheel width and clearance at the same time instead of assuming that any Mercedes-Benz Trucks SUV tire of similar overall size will interchange.

A 2023 Mercedes-Benz Trucks should be stored on clean, properly inflated tires in a cool, dry place away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing sources. Long static storage can encourage flat spotting, especially on low-profile performance tires, and prolonged UV exposure will age the rubber whether the vehicle is driven often or not. Clean floors and stable temperatures help preserve both the tires and the wheels.

For vehicles that sit for extended periods, move the vehicle occasionally to change the tire's contact patch or use stands if the storage plan and vehicle setup make that practical. Avoid parking for months with low pressure, and inspect the tires before the vehicle goes back on the road. On higher-end Mercedes-Benz Trucks SUVs with larger wheels, even minor flat-spotting can be more noticeable in ride quality when driving resumes.

Tires on a 2023 Mercedes-Benz Trucks should be judged by age and condition as much as by tread depth. A good rule is to begin careful evaluation around five to seven years from the manufacturing date and to treat around ten years as the point where replacement deserves serious consideration regardless of remaining tread. The DOT date code on the sidewall tells you when each tire was built.

That approach is especially important for luxury SUVs, EVs, and AMG models that may see modest annual mileage but still carry significant weight and speed capability. A tire can look usable at a glance and still be aging out internally. Check the date code, watch for hardening or cracking, and use age as part of the replacement decision instead of relying only on how much tread remains.

Tires on a 2023 Mercedes-Benz Trucks should be inspected before every drive and again before any longer highway trip. Look for pressure loss, cuts, punctures, bulges, irregular shoulder wear, tread damage, and sidewall cracking. On staggered AMG and larger SUV fitments, inspect each corner individually because front and rear sizes may differ and wear can develop differently across the vehicle.

A regular inspection routine catches problems early, before they become vibration, handling, or safety issues. For low-use vehicles, monthly checks are still worthwhile even if the SUV rarely leaves the garage. Pay special attention after pothole impacts or curb contact, since low-profile 20-, 21-, 22-, and 23-inch Mercedes-Benz Trucks fitments can be less forgiving of wheel and sidewall damage than taller-profile SUV tires.

Yes, the currently supported 2023 Mercedes-Benz Trucks radial products are suitable for highway use when the tire size, load capacity, and speed rating match the vehicle's needs. In the available 255/45R20 choices, W-rated products carry a 168 mph speed ceiling and the 255/40R20 BFGoodrich option carries a Y rating with a 186+ mph ceiling. Those figures exceed normal U.S. highway speeds by a wide margin, provided the tire is correctly fitted and properly maintained.

Real-world safety depends just as much on inflation, alignment, tread condition, and the condition of the vehicle itself as it does on the rating molded into the tire. On heavy luxury SUVs and high-output AMG models, worn suspension parts or neglected brakes can matter more at everyday speeds than the raw speed ceiling of the tire. Match the exact size first, then choose a product whose rating comfortably covers how the vehicle will actually be used.

Inflation pressure for 2023 Mercedes-Benz Trucks tires should follow the vehicle placard or owner's manual first, because factory pressure targets are set by model, axle load, and wheel package. Product-specific maximum load and pressure figures are not the same thing as recommended running pressure, but they are still useful reference points. In the current product-supported sizes, a BFGoodrich 255/45R20 is rated at 1,819 pounds at 51 psi, and the BFGoodrich 255/40R20 is rated at 1,819 pounds at 50 psi.

Use those figures as tire-capability information, not as a default setting for daily driving. A Mercedes-Benz Trucks SUV or crossover may call for a lower operational pressure depending on configuration, passenger load, and speed expectations. If the placard and the tire's maximum sidewall rating are both in front of you, the placard is the correct starting point for use on the vehicle while the tire's printed maximum remains a load-rating reference.

Before a longer drive in a 2023 Mercedes-Benz Trucks, inspect all four tires for cracking, punctures, cuts, bulges, and uneven wear, then set pressures with the tires cold. Check the spare if the vehicle has one, and look closely at the inner sidewalls as well as the outer faces, since damage is often missed there. On AMG and staggered-fitment models, verify that each tire is in the correct position and that front and rear sizes have not been mixed.

That tire check should be part of a broader readiness review on any modern luxury SUV, especially one with large-diameter wheels and low-profile tires. Also pay attention to wheel damage, brake feel, warning lights, and alignment behavior once you begin driving. Catching a pressure issue, sidewall injury, or bent wheel before a trip is far easier than dealing with vibration, heat buildup, or a roadside failure after hours on the highway.