2013 Mercedes-Benz Trucks Tire Fitment Guide

2013 Mercedes-Benz Trucks vehicles use nine sizes: 265/60R18 for the G550 and GL350; 275/50R20 for the G63 AMG, GL350, and GL450; 275/55R19 for the GL350 and GL450; 295/40R21 for the GL550 and GL63 AMG; 235/50R19 for the GLK250 and GLK350; 235/45R20 for the GLK350; 255/50R19 for the ML350 and ML550; 265/45R20 for the ML350, ML550, and ML63 AMG; and 295/35R21 for the ML63 AMG. Rim diameters span 18, 19, 20, and 21 inches.

That means year and make alone are not enough for a confident tire choice on 2013 Mercedes-Benz Trucks models. Start by identifying the exact model, then verify the wheel diameter on the truck, since several GL, GLK, ML, and AMG variants came with more than one fitment. Once those two details match, the tire search becomes much more straightforward.

On a 2013 Mercedes-Benz Trucks tire, 265/60R18 means the tire is 265 millimeters wide, the sidewall height is 60 percent of that width, the R indicates radial construction, and the tire fits an 18-inch wheel. In this year and make, that size applies to the G550 and GL350. It is a modern metric radial size rather than an older numeric or alphanumeric collector-car format.

The practical value of decoding the size is that every part of the code matters. A 265 width alone is not enough, because the aspect ratio and wheel diameter also define the tire's overall proportions and fitment. If your 2013 Mercedes-Benz Trucks model uses 18-inch wheels, confirm the complete size on the sidewall or the vehicle placard before replacing tires.

No. 2013 Mercedes-Benz Trucks models use different sizes depending on the model and wheel package. The lineup ranges from 18-inch fitments such as 265/60R18 to 21-inch fitments such as 295/40R21 and 295/35R21, and several models were offered with multiple factory wheel diameters. The GL350, GLK350, ML350, ML550, and ML63 AMG are especially important examples because each can appear with more than one size.

That variation matters because two trucks that look similar can still require different tires. A GL450 on 19-inch wheels and a GL450 on 20-inch wheels do not use the same size, even though they are the same model year and model family. Checking the sidewall of the existing tire and verifying the actual wheel diameter is the cleanest way to avoid a mismatch.

2013 Mercedes-Benz Trucks fitments use modern metric radial sizes, so sidewall presentation is generally more contemporary than what collectors consider period styling on mid-century vehicles. Sidewall appearance can still vary from one product line to another, especially when comparing touring-oriented tires with more performance-oriented fitments used on AMG applications. The exact look should always be checked on the specific tire before making a final choice.

For most 2013 Mercedes-Benz Trucks owners, sidewall style is less about concours authenticity and more about matching the character of the vehicle. A G-Class owner may prefer a more understated utility look, while a GL63 AMG or ML63 AMG owner may want a sidewall profile that visually suits a larger wheel package. Decide on the correct size first, then compare sidewall appearance within that size.

Different tire makers cover the various 2013 Mercedes-Benz Trucks sizes, and brand availability often changes from one size to another rather than staying uniform across the whole range. That is common for luxury SUVs and performance-oriented AMG applications, where some sizes are shared broadly and others are more specialized. Brand choice therefore follows the exact size first, then the intended use of the truck.

Once you have confirmed the model and wheel diameter, compare the brands available in that exact size rather than assuming a favorite brand will cover every fitment from G550 through ML63 AMG. This approach matters most on 21-inch AMG sizes, where options can be narrower than on more common 18-, 19-, and 20-inch applications. It also helps keep appearance, speed category, and tire character aligned with the vehicle.

A 2013 Mercedes-Benz Trucks model with more than one factory size should be matched to the wheel diameter actually on the truck. The GL350 can use 18-, 19-, or 20-inch sizes; the GL450 can use 19- or 20-inch sizes; the GLK350 can use 19- or 20-inch sizes; the ML350 and ML550 can use 19- or 20-inch sizes; and the ML63 AMG can use 20- or 21-inch sizes. Those are separate fitments, not interchangeable by guesswork.

The easiest path is to verify the current tire sidewall and the wheel diameter before comparing brands or tread styles. If the truck has had aftermarket wheel changes at some point, the factory model name alone may no longer tell the whole story. Matching the replacement tire to the wheel that is physically on the vehicle prevents ordering delays and preserves the intended proportions.

2013 Mercedes-Benz Trucks fitments use modern radial metric sizes, and these applications are normally associated with tubeless passenger and SUV tire design rather than tube-type collector fitments. That said, the tire itself is only one part of the system. The wheel condition, valve stem type, and any previous modifications still matter when the tire is installed.

Most owners will be working with tubeless-compatible wheels, but it is still wise to inspect the wheel and valve hardware during replacement. If the truck has unusual wheel changes or corrosion issues, confirm the setup with the installer before mounting new tires. That quick check is especially worthwhile on larger 20- and 21-inch wheel packages, where proper sealing and wheel condition are important.

No. The original 2013 Mercedes-Benz Trucks lineup spans 18-, 19-, 20-, and 21-inch wheel diameters, so one wheel cannot accept every tire size used across the year and make. A 265/60R18 requires an 18-inch wheel, a 275/55R19 requires a 19-inch wheel, a 275/50R20 or 265/45R20 requires a 20-inch wheel, and the 295/40R21 and 295/35R21 sizes require 21-inch wheels.

Original wheels can be reused when the replacement tire matches the wheel diameter and the correct application for that model. The point to verify is not just the model badge, but the actual wheel package fitted to the truck. That step is especially important on GL, GLK, ML, and AMG variants, where multiple wheel diameters were used within the same model family.

A stored 2013 Mercedes-Benz Trucks vehicle should be kept out of direct sunlight, away from ozone-producing equipment such as electric motors or battery chargers, and off persistently damp concrete when possible. Clean, dry storage conditions help protect the rubber from premature aging. Inflation should be kept at an appropriate level during storage so the tire carries weight properly rather than sagging for long periods.

Moving the truck periodically can help avoid one section of the tire bearing the load in the same spot for months at a time. If the vehicle will sit for an extended season, some owners use stands to reduce sustained loading, but they should still support the chassis correctly. Storage habits matter just as much on a low-mileage luxury SUV as they do on an older collector car.

On a 2013 Mercedes-Benz Trucks model, tire age usually matters more than mileage once the vehicle becomes a lower-use second or collector-style vehicle. A practical rule is to begin evaluating tires closely around five to seven years of age and to treat around ten years as a serious replacement threshold, regardless of tread depth. The DOT date code on the sidewall is the best way to confirm the tire's actual age.

That guidance is especially relevant for trucks that look fine cosmetically but spend long stretches parked. Luxury SUVs and AMG models can retain tread while the rubber still hardens, cracks, or loses confidence at speed. If the date code shows significant age, replacement deserves consideration even when the tire still appears presentable in the garage.

Tires on a 2013 Mercedes-Benz Trucks model should be inspected before every drive and again before any extended highway outing. Look for sidewall cracking, bulges, embedded objects, uneven tread wear, and any sign that a tire is losing pressure. On larger-wheel GL, ML, and AMG applications, damage from potholes or curb contact also deserves close attention because lower-profile tires can hide wheel-related issues.

A quick visual check catches many problems before they become roadside issues. Monthly pressure checks are worthwhile even on vehicles that see only occasional use, since underinflation can change how the truck feels and wears the tire. If a tire has repeated pressure loss, inspect the valve stem and wheel sealing surfaces at the same time rather than assuming the tread is the cause.

2013 Mercedes-Benz Trucks fitments use modern radial metric sizes, which are the standard construction for contemporary highway use. Highway safety still depends on choosing the exact size required for the model and wheel package, maintaining proper inflation, and replacing aged or damaged tires before regular road use. On vehicles such as the G-Class, GL, ML, and AMG variants, overall condition matters just as much as the tire itself.

A tire can be appropriate for highway use and still be the wrong choice if its age, wear pattern, or size does not match the truck. Owners should think of tire condition as one part of the broader roadworthiness picture, alongside brakes, alignment, suspension, and wheel condition. That is especially important on heavier luxury SUVs that place meaningful demands on the tire at normal interstate speeds.

Inflation pressure on 2013 Mercedes-Benz Trucks models should follow the vehicle placard or owner's manual for the exact model and wheel package, because the lineup uses several distinct tire sizes and wheel diameters. A 265/60R18 G550 or GL350 does not necessarily use the same pressure as a 295/40R21 GL63 AMG or a 235/50R19 GLK250. Pressure should always match the complete vehicle application, not just a similar-looking tire.

That matters because vehicle weight distribution, intended load, and wheel package all influence the recommended pressure. When replacing tires, compare the vehicle recommendation with the tire manufacturer's guidance and avoid borrowing numbers from another 2013 Mercedes-Benz Trucks model. A pressure that works well on one GL or ML setup may be inappropriate on another with a different wheel and tire combination.

Before a longer drive in a 2013 Mercedes-Benz Trucks model, inspect each tire for cracking, cuts, punctures, bulges, irregular tread wear, and proper cold inflation pressure. Check the spare as well, especially on vehicles that may not have seen regular road use, and make sure the valve stems are in good condition. On larger-diameter AMG fitments, also look closely at the wheels for bends or damage from past impacts.

A longer trip is also a good time to think beyond the tires. Brakes, fluids, suspension condition, and alignment all affect how securely the truck uses its tires at speed. If the vehicle has sat for an extended period, a short local test drive before a highway run can reveal vibration, pull, or pressure-loss issues early enough to address them before they interrupt the trip.