The 2004 Mercedes-Benz Trucks G55 AMG sits at an interesting point in G-Class history, combining the upright, military-rooted shape of the Geländewagen with the more aggressive road presence and performance character of AMG. For many owners, that mix of utility, luxury, and hand-built muscle is exactly what makes this model worth preserving carefully. The 2004 Mercedes-Benz Trucks G55 AMG uses a single primary tire size, 285/55R18, in radial construction. That keeps the fitment question straightforward, while still leaving room to think about tread style, overall tire character, and how closely the tire suits a stock versus modified truck. Proper wheel confirmation and condition checks still matter before replacing aging tires.
Which Tire Size Is Right for The 2004 Mercedes-Benz Trucks G55 AMG
The 2004 Mercedes-Benz Trucks G55 AMG uses one primary tire size: 285/55R18, a radial tire that fits an 18-inch rim. That same size applies to the covered Base sub-model, so the main decision is not between multiple fitments, but between tire choices that suit the truck's condition, wheel setup, and intended road use.
285/55R18 is a metric radial size in which 285 identifies the nominal section width in millimeters, 55 is the aspect ratio, R indicates radial construction, and 18 is the rim diameter in inches. On the 2004 Mercedes-Benz Trucks G55 AMG, this modern sizing format matches the vehicle's single primary fitment and reflects its later-era performance SUV character rather than an earlier bias-ply convention. The size also gives you a useful baseline for checking overall proportions on a stock-height truck or confirming that an existing wheel package still matches the intended setup. Any deviation from this size should be evaluated carefully against wheel dimensions and clearance.
Sub-model fitment is straightforward for the 2004 Mercedes-Benz Trucks G55 AMG. The covered Base model uses the same primary tire size, so the focus shifts from identifying different fitments to confirming wheel condition, vehicle setup, and the type of tire you want to run.
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2004 Mercedes-Benz Trucks G55 AMG Base
The 2004 Mercedes-Benz Trucks G55 AMG Base uses the 285/55R18 radial tire size. That keeps tire selection simple, with attention centered on staying with the correct size and verifying that any aftermarket wheel or suspension changes have not altered the truck's fitment requirements.
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.
Frequently Asked Questions
Owners of a 2004 Mercedes-Benz Trucks G55 AMG usually want quick answers on the correct 285/55R18 size, 18-inch rim fitment, tire selection, and the extra checks worth making before putting a high-performance G-Class back on the road.
Tire Size & Fitment
What tire size fits a 2004 Mercedes-Benz Trucks G55 AMG?
The 2004 Mercedes-Benz Trucks G55 AMG uses 285/55R18 tires. This is a metric radial size, and it is the primary fitment for the vehicle, including the covered Base sub-model.
Using the correct size matters because this truck's stance, clearance, and wheel fitment are all tied to that 18-inch radial setup. A G55 AMG may also have seen wheel or suspension changes over time, so it is smart to confirm the actual wheel dimensions on the truck before replacing tires.
What size rim does a 2004 Mercedes-Benz Trucks G55 AMG use?
The primary tire size for the 2004 Mercedes-Benz Trucks G55 AMG mounts on an 18-inch rim. That rim diameter is built into the 285/55R18 size designation, where the final number identifies the wheel diameter in inches.
Rim diameter is only one part of the fitment picture, so it helps to verify the wheel itself before choosing a tire. Width, offset, and any aftermarket changes can affect how a 285/55R18 tire sits on the vehicle and whether steering and body clearance remain appropriate.
Does the 2004 Mercedes-Benz Trucks G55 AMG Base use the same tire size?
Yes. The 2004 Mercedes-Benz Trucks G55 AMG Base uses the same 285/55R18 radial tire size as the core fitment for this model. There is no alternate primary size within the covered sub-model range.
That makes replacement easier because the question is less about identifying trim-specific sizing and more about confirming the truck's current setup. Any G-Class that has been modified with different wheels, suspension changes, or non-stock ride height should still be measured carefully before new tires are installed.
Choosing the Right Tire
What should I consider when choosing a 285/55R18 tire for a 2004 Mercedes-Benz Trucks G55 AMG?
Start with the correct size, 285/55R18, because that is the primary fitment for the 2004 Mercedes-Benz Trucks G55 AMG. From there, the key considerations are radial construction, wheel compatibility, and whether the truck remains in a stock-style setup or has been altered over time.
It also helps to think about how the vehicle is used. A carefully preserved truck, a regularly driven street vehicle, and a modified example can place different demands on the tire choice, even within the same size. Checking the wheel dimensions and overall tire condition keeps the selection process grounded in real fitment.
How do I choose between available 285/55R18 tires for a 2004 Mercedes-Benz Trucks G55 AMG?
Choosing between 285/55R18 tires for a 2004 Mercedes-Benz Trucks G55 AMG begins with staying in the correct size and confirming the tire is intended for an 18-inch wheel. From there, the differences usually come down to tread character, overall tire design, and how closely the tire suits the vehicle's intended use.
A truck kept close to stock may call for a different visual and driving balance than one used more aggressively or fitted with aftermarket equipment. Looking at the tire in the context of wheel width, ride height, and how the vehicle is actually driven will usually narrow the choice more effectively than size alone.
What rim-fitment details should I compare when choosing 2004 Mercedes-Benz Trucks G55 AMG tires?
The first rim-fitment detail is diameter, since the 2004 Mercedes-Benz Trucks G55 AMG uses an 18-inch wheel with its 285/55R18 tire size. After that, wheel width and offset become important because they influence how the tire sits, clears suspension parts, and tracks within the fenders.
Those details matter even more on a vehicle like the G55 AMG, where replacement wheels are common. A tire can have the correct nominal size and still create issues if the wheel package has changed. Checking the actual wheel dimensions before purchase helps avoid surprises once the tire is mounted and aired up.
Restoration & Appearance
Which tire should I choose for a period-style 2004 Mercedes-Benz Trucks G55 AMG?
A period-style approach for a 2004 Mercedes-Benz Trucks G55 AMG starts with the correct 285/55R18 radial size. Because this is a later collector-era performance SUV, keeping the proper modern metric radial format usually does more for the truck's overall presentation than trying to reinterpret it through an older sizing style.
The most useful next step is to match the tire choice to the truck's condition and intended presentation. A well-preserved example often benefits from a clean, stock-appearing fitment, while a modified vehicle may need a tire that complements visible wheel and suspension changes without straying from sensible dimensions.
Does correct tire fitment matter for a 2004 Mercedes-Benz Trucks G55 AMG restoration?
Yes, correct tire fitment matters because the 2004 Mercedes-Benz Trucks G55 AMG has a very defined visual presence, and tire proportions are a big part of it. Staying with the proper 285/55R18 radial size helps preserve the truck's stance and avoids the mismatched look that often comes with improvised sizing.
Restoration-minded owners should also remember that wheel changes can quietly alter the look and fitment even when the vehicle appears close to stock. Verifying the actual wheel package before selecting tires helps maintain the right overall presentation and keeps the truck from developing clearance or rubbing issues later.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2004 Mercedes-Benz Trucks G55 AMG?
Yes. Modifications can affect tire fitment on a 2004 Mercedes-Benz Trucks G55 AMG even when the intended tire size remains 285/55R18. Changes to wheel width, wheel offset, suspension height, springs, or body clearance can all influence how the tire sits and whether it has enough room through steering and suspension travel.
That is why a modified G-Class should be checked as it currently exists rather than treated as a purely stock vehicle. Measuring the installed wheels and looking for any signs of rubbing, contact marks, or uneven wear will tell you much more than size designation alone before new tires are chosen.
What should I inspect before driving a 2004 Mercedes-Benz Trucks G55 AMG on new tires?
Before driving a 2004 Mercedes-Benz Trucks G55 AMG on new tires, inspect the wheels, valve stems, lug hardware, and the tire's seating on the rim. It is also worth checking that the tires are inflated properly, the tread and sidewalls are clean and undamaged, and there is no immediate interference at full steering lock.
A short, careful road check can reveal vibration, pulling, or clearance issues before the truck is driven farther. Since many collector and enthusiast vehicles spend long periods parked, it also helps to look over suspension bushings, shocks, and alignment condition so the new tires are not compromised by underlying wear.
How often should tires on a 2004 Mercedes-Benz Trucks G55 AMG be inspected?
Tires on a 2004 Mercedes-Benz Trucks G55 AMG should be inspected regularly, especially if the vehicle is driven infrequently or stored for long periods. Collector and specialty vehicles can develop age-related issues such as cracking, flat spotting, air loss, or sidewall deterioration even when tread wear remains minimal.
A quick visual check before each drive is a sensible habit, with more thorough inspections at regular service intervals and before longer trips. Paying attention to pressure, tread condition, bulges, cuts, and uneven wear can catch problems early, which is particularly important on a heavy, high-performance SUV like the G55 AMG.
