2018 Mercedes-Benz Trucks Tire Fitment Guide

2018 Mercedes-Benz Trucks vehicles use 22 different tire sizes across 19 model cores: 275/55R19, 325/55R22, 275/50R20, 295/35R21, 235/45R19, 235/50R18, 235/40R20, 235/55R19, 235/60R18, 255/45R20, 285/40R20, 255/40R21, 285/35R21, 265/40R21, 265/45R20, 295/40R20, 255/50R19, 275/45R21, 285/40R22, 315/40R21, 325/35R22, and 295/40R21. Rim diameters span 18, 19, 20, 21, and 22 inches, and sizes are tied closely to model and wheel package rather than shared across the entire lineup.

That means a 2018 Mercedes-Benz Trucks buyer should start with the exact model name, then confirm wheel diameter, and then check whether the vehicle uses the same size at all four corners or a staggered front-and-rear arrangement. AMG versions in particular often use wider rear tires, while standard GLA, GLC, GLE, and GLS models may appear with more than one factory wheel option.

On a 2018 Mercedes-Benz Trucks application, 275/55R19 means the tire is 275 millimeters wide, the sidewall height is 55 percent of that width, the R identifies radial construction, and the tire mounts on a 19-inch wheel. That size appears on the G550 and GLS450, so it is not a universal Mercedes-Benz Trucks fitment for 2018.

The important practical point is that the last number, 19, fixes the wheel diameter and cannot be substituted with 18-, 20-, 21-, or 22-inch applications. If your 2018 Mercedes-Benz Trucks vehicle wears 19-inch wheels, you still need to confirm the model and complete size because other 19-inch fitments in the lineup, such as 235/45R19, 235/55R19, and 255/50R19, are not interchangeable.

No. 2018 Mercedes-Benz Trucks models do not share one common tire size. The GLA range uses compact crossover sizes such as 235/50R18, 235/45R19, and 235/40R20, while G-Class, GLC, GLE, and GLS models move into wider and taller sizes, and AMG variants frequently add staggered fitments with different front and rear dimensions.

That variation matters because the correct tire depends on more than just year and make. A standard GLE350, for example, may use 255/50R19 or 265/45R20, while a GLE63 AMG or GLE63 AMG S can use multiple 20-, 21-, or 22-inch sizes. Confirming the exact model and wheel package first prevents ordering a tire that matches the badge family but not the actual vehicle.

Available sidewall styles for 2018 Mercedes-Benz Trucks tires include Blackwall and raised white letter. The 235/50R18 choices are Blackwall only from BFGoodrich and Nitto, the 295/40R20 option is a Blackwall Nitto, and 255/45R20 is available in both Blackwall and RWL form through BFGoodrich, Nitto, and Pro-Trac.

For most late-model Mercedes-Benz utility vehicles, Blackwall is the visually appropriate look because it aligns with the factory luxury and performance presentation of the era. Raised white letters introduce a more custom or enthusiast-oriented appearance, so they can suit a personalized build, but owners concerned with an original-style presentation will usually stay with Blackwall.

BFGoodrich, Nitto, and Pro-Trac have product coverage within the 2018 Mercedes-Benz Trucks sizes shown here. BFGoodrich and Nitto appear in 235/50R18, BFGoodrich, Nitto, and Pro-Trac appear in 255/45R20, and Nitto covers 295/40R20. All of those available products are radial tires suited to modern wheel-and-tire packages.

Brand choice becomes more meaningful after the correct size is settled, because Mercedes-Benz Trucks applications for 2018 vary so much by model. Once the vehicle's exact size is confirmed, buyers can narrow further by sidewall appearance, load rating where published, and whether they want a more mainstream Blackwall look or a more visual custom treatment such as raised white letters.

In 235/50R18 for 2018 Mercedes-Benz Trucks use, BFGoodrich offers multiple Blackwall radial choices including g-Force Sport COMP-2, g-Force COMP-2 A/S, and g-Force Phenom T/A, while Nitto offers the NT555 G2 in the same size. The BFGoodrich products shown carry weights around 26 to 29 pounds, and the Nitto comes in at 27.86 pounds with a published maximum load of 1,819 pounds at 50 psi. All carry W speed ratings in this size.

That makes the comparison less about basic compatibility and more about product character within the same size class. A buyer can use those differences to decide between all-season-oriented versus more performance-minded tread families, while keeping the original 18-inch GLA250 wheel format intact. The key is to choose within the confirmed size rather than cross-shopping against a different wheel diameter.

Published rim-width guidance appears for two 2018 Mercedes-Benz Trucks sizes here. In 235/50R18, the fitment range is 6.5 to 8.5 inches, with one NT555 G2 notation centering on 7.5 inches within that span. In 255/45R20, BFGoodrich specifies an 8.0 to 9.5 inch range.

Rim width matters because two tires can share the same wheel diameter but still want a different wheel width for proper support and shape. Before choosing a tire for a 2018 Mercedes-Benz Trucks application, compare the actual wheel width on the vehicle with the range published for that exact size and product rather than assuming every 18-inch or 20-inch wheel is equally suitable.

The available 2018 Mercedes-Benz Trucks products shown here are all modern radial tires with no tube-type marking in the size descriptions. That points to tubeless passenger and SUV tire construction for the covered sizes, which is consistent with the late-model wheel applications used on 2018 Mercedes-Benz Trucks vehicles.

Even so, the wheel itself still matters. If a vehicle has aftermarket wheels, prior repairs, or bead-seat damage, the absence of a tube marking on the tire does not override the condition of the wheel. A clean, sound tubeless wheel, a good valve stem, and proper mounting practices are just as important as the tire choice itself.

No, original 2018 Mercedes-Benz Trucks wheels cannot be treated as interchangeable across all 22 sizes because the lineup spans 18-inch through 22-inch rim diameters. A 235/50R18 fits an 18-inch wheel, a 255/45R20 fits a 20-inch wheel, and a 295/35R21 fits a 21-inch wheel, so matching the last number in the size code to the wheel diameter is mandatory.

The other factor is whether the vehicle uses the same size at all four corners. Many AMG applications use staggered fitments, so even when the front and rear wheels share the same diameter, the tire widths and aspect ratios may differ. Check both axle positions before reusing original wheels or replacing only part of a set.

A 2018 Mercedes-Benz Trucks vehicle should be stored in a cool, dry space away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment that can accelerate rubber aging. Keep the tires properly inflated during storage, avoid standing water or damp floors, and move the vehicle periodically if it will sit for extended periods.

Modern radial tires generally tolerate storage better than older bias-ply designs, but they still age from time, heat, and environment even when tread wear is low. If the vehicle will remain parked for a season or longer, occasional rolling or the use of stands can help reduce flat-spotting stress and keep the tire contact patch from carrying the same load continuously.

On a 2018 Mercedes-Benz Trucks vehicle, tire life is usually judged by age and condition more than by mileage alone, especially on collector-owned or low-use examples. A good rule is to begin close inspection as tires pass the five- to seven-year range and to treat around ten years from the DOT date code as a serious replacement point even if tread depth still looks acceptable.

That guideline matters because luxury SUVs and AMG models can accumulate little annual mileage while still placing meaningful load and speed demand on the tires when driven. Sidewall cracking, hardening, vibration, and repeated pressure loss often tell the real story. If age and condition conflict with tread appearance, the age and condition should carry more weight.

Tires on a 2018 Mercedes-Benz Trucks vehicle should be checked before every drive and given a more careful inspection before any extended trip. Look for cracking, bulges, punctures, uneven wear, objects in the tread, and pressure loss, and compare all four corners because staggered AMG setups can hide an issue on one axle while the other still looks healthy.

A regular inspection routine is especially important on vehicles that sit between outings. A tire that looked fine a month ago can develop visible age cracking or a slow leak while parked. Include the spare if the vehicle carries one, and verify valve-stem condition along with tread and sidewall condition so the whole package is ready for use.

Yes, the radial tire products shown for 2018 Mercedes-Benz Trucks applications are highway-capable modern designs, and the available examples carry W speed ratings, which correspond to a maximum of 168 mph. That is far beyond ordinary U.S. highway use, so the relevant issue is less about headline speed capability and more about whether the tire is the correct size, load class, and condition for the vehicle.

For normal road driving, a healthy properly matched tire is usually more important than chasing the highest possible performance label. A 2018 Mercedes-Benz Trucks owner should also remember that vehicle weight, suspension condition, alignment, and brake condition all affect real-world highway safety. Confirming the exact model fitment and maintaining correct pressure matter more than choosing by appearance alone.

Inflation pressure for a 2018 Mercedes-Benz Trucks vehicle should follow the factory vehicle placard or owner's manual first, because pressure depends on the specific model, axle load, and wheel package. Some available tire products also publish their own maximum load-and-pressure figures, such as 1,609 pounds at 51 psi and 1,819 pounds at 50 psi in 235/50R18, but those figures are tire capacity references rather than blanket vehicle settings.

That distinction matters because the correct operating pressure for a GLA250 on 235/50R18 is not automatically the same as the maximum pressure molded into the tire, and pressure guidance should never be transferred from one size to another. Use the vehicle's recommended cold inflation point as the baseline, then confirm that the chosen tire's load rating fits the application.

Before a longer drive in a 2018 Mercedes-Benz Trucks vehicle, inspect each tire for tread damage, cuts, sidewall cracking, bulges, punctures, and uneven wear, then verify cold inflation pressures and make sure the wheel diameter and size at each corner match the intended fitment. On AMG models, confirm the front and rear sizes separately because a staggered setup can be mixed up more easily than a square one.

The tires are only one part of the pre-trip routine, but they are one of the easiest places to catch a problem before it becomes a roadside issue. Also check the spare if equipped, along with the alignment feel, braking behavior, and any vibration that may point to imbalance or tire age. A careful walkaround often prevents bigger trouble once the trip starts.