The 2004 Mercedes-Benz S600 sits at the top of the W220 S-Class range, blending flagship luxury with the effortless high-speed character expected of a V12 Mercedes sedan. Buyers looking at this car today are usually balancing refined road manners, correct overall stance, and the realities of modern replacement-tire availability. Tire fitment centers on 18-inch radial sizes, with 245/45R18 used on the standard S600 and the front of AMG Sport Package cars, while 265/40R18 serves the rear of AMG Sport Package versions. That makes this page less about vintage construction choices and more about confirming configuration, matching the right size to the right axle, and comparing the available performance-oriented radial options.
Which Tire Size Is Right for The 2004 Mercedes-Benz S600
The 2004 Mercedes-Benz S600 uses two primary tire sizes, and the correct choice depends on the exact configuration. Standard S600 models use 245/45R18, while AMG Sport Package fitment adds a staggered setup with 245/45R18 in front and 265/40R18 in the rear, all in radial construction on 18-inch wheels. The first step is confirming whether the car is a base setup or an AMG Sport Package car, then verifying front-versus-rear sizing before comparing tire options.
245/45R18 is a metric radial size in which 245 identifies the nominal section width in millimeters, 45 is the aspect ratio, R denotes radial construction, and 18 is the wheel diameter in inches. On the 2004 Mercedes-Benz S600, this size covers the standard car as well as the front axle of AMG Sport Package versions, making it the key fitment most owners will start with. Available choices in this size come from BFGoodrich and Nitto, with blackwall sidewalls and several series including g-Force Comp 2 AS, g-Force Sport Comp 2, Nitto NT555 G2, and g-Force Phenom T/A. Selection usually comes down to matching the car's exact configuration and comparing rim-width compatibility, load figures, and product character within the correct size.
265/40R18 is a metric radial size with a 265-millimeter nominal section width, a 40-series profile, radial construction, and an 18-inch rim diameter. For the 2004 Mercedes-Benz S600, this size is used on the rear of cars equipped with the AMG Sport Package, so it belongs to a staggered fitment rather than every S600. The available product choice here is a blackwall BFGoodrich g-Force Phenom T/A, which keeps the focus on correct rear sizing and wheel compatibility rather than cosmetic sidewall variety. This size should be evaluated carefully on AMG Sport Package cars where rear-wheel width and front-to-rear tire differentiation both matter.
Sub-model fitment matters on the 2004 Mercedes-Benz S600 because the standard car and the AMG Sport Package setup do not use the same full tire arrangement. The key distinction is whether the car uses a square 245/45R18 fitment or a staggered front-and-rear combination that adds 265/40R18 at the rear.
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2004 Mercedes-Benz S600 Base
The 2004 Mercedes-Benz S600 Base uses 245/45R18 radial tires on 18-inch wheels. Tire selection here is comparatively straightforward, with the main decision shifting to brand, tire series, and rim-width compatibility within that one primary size.
The front axle of the 2004 Mercedes-Benz S600 with AMG Sport Package uses 245/45R18 radial tires. That means the front size matches the standard S600, but the buyer still needs to treat the car as a staggered setup when confirming a complete tire package.
The rear axle of the 2004 Mercedes-Benz S600 with AMG Sport Package uses 265/40R18 radial tires. Rear tire choice therefore depends on confirming the AMG Sport Package configuration and making sure the wheel width and rear-only sizing match the car's intended setup.
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 2004 Mercedes-Benz S600 Tires for Sale
Available 18-inch S600 tire choices are all radial blackwall designs, with 245/45R18 offered by BFGoodrich and Nitto across several g-Force and NT555 series, while 265/40R18 centers on BFGoodrich g-Force Phenom T/A. That gives buyers a mix of brand, series, load, and rim-width specifications to compare within the correct fitment.
Common 2004 Mercedes-Benz S600 tire questions usually center on identifying the correct 18-inch size, understanding the AMG Sport Package staggered setup, comparing available radial options, and checking wheel, suspension, and tire condition before regular road use.
Tire Size & Fitment
What tire size fits a 2004 Mercedes-Benz S600?
The 2004 Mercedes-Benz S600 uses 245/45R18 and 265/40R18 radial tire sizes, depending on configuration. The standard S600 uses 245/45R18, while cars with the AMG Sport Package use a staggered arrangement with 245/45R18 in front and 265/40R18 in the rear.
That means the first step is identifying whether the car is a base S600 or an AMG Sport Package car. Once that is confirmed, check the wheel position as well, because the rear size on staggered cars is different and should not be selected simply by matching the front tire.
What size rim does a 2004 Mercedes-Benz S600 use?
The 2004 Mercedes-Benz S600 uses 18-inch rims with both of its primary tire sizes. Both 245/45R18 and 265/40R18 are built around an 18-inch wheel diameter, so the rim diameter stays consistent even when the tire width and profile change between standard and AMG Sport Package configurations.
Rim diameter is only part of the fitment picture, though. Wheel width still matters, especially on AMG Sport Package rear fitment, so it is worth confirming the actual wheel dimensions on the car before choosing tires, particularly if the vehicle has replacement wheels or a mixed set.
Do all 2004 Mercedes-Benz S600 sub-models use the same tire size?
No, not all 2004 Mercedes-Benz S600 sub-models use the same full tire setup. The Base model uses 245/45R18, and the AMG Sport Package uses 245/45R18 on the front with 265/40R18 on the rear, creating a staggered arrangement rather than a single size at all four corners.
That difference is important when replacing only two tires or ordering a full set. A quick check of the car's exact package, wheel position, and current wheel dimensions can prevent front-to-rear mix-ups and helps keep the intended stance and fitment relationship intact.
Choosing the Right Tire
What should I consider when choosing a 245/45R18 tire for a 2004 Mercedes-Benz S600?
Start with the correct 245/45R18 size, then compare radial construction details such as rim-width compatibility, load capacity, and tire series. In this size, options include BFGoodrich and Nitto products, all in blackwall form, with several g-Force choices as well as the Nitto NT555 G2.
The practical choice depends on how the S600 is used and whether the car is a standard model or the front half of a staggered AMG Sport Package setup. Matching the wheel width, keeping the correct axle fitment, and choosing a tire series that suits the car's intended road use are the main priorities.
What brands offer tires for the 2004 Mercedes-Benz S600?
BFGoodrich and Nitto both offer tires for the 2004 Mercedes-Benz S600, although brand coverage depends on the exact size. The 245/45R18 size includes multiple BFGoodrich and Nitto options, while the 265/40R18 rear AMG Sport Package size is represented here by a BFGoodrich option.
Brand alone should not make the decision. It helps to compare which size the brand actually covers on the car, along with the tire series, rim-width requirements, and load figures, especially if the S600 uses the staggered AMG Sport Package arrangement rather than a four-tire 245/45R18 setup.
What tire series are available for the 2004 Mercedes-Benz S600?
The 2004 Mercedes-Benz S600 is represented here by several tire series, including BFGoodrich g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and the Nitto NT555 G2. Those series appear within the correct 18-inch radial sizes rather than as universal options for every wheel position.
Series selection matters because it helps distinguish the available choices inside the proper fitment. Once the correct size and axle position are confirmed, comparing series alongside rim-width range and load specification gives a clearer picture of which tire best matches the car's setup and intended driving use.
Restoration & Appearance
Which tire should I choose for a period-style 2004 Mercedes-Benz S600?
A period-style 2004 Mercedes-Benz S600 starts with using the correct factory-era sizing format and configuration, which means 245/45R18 on the standard car and a 245/45R18 front plus 265/40R18 rear arrangement on AMG Sport Package cars. All of the available options here are modern radial blackwall tires, which suit the car's original-era luxury-performance presentation.
Appearance on a car like this is shaped more by proper size, side profile, and staggered-versus-non-staggered setup than by wide cosmetic sidewall variation. Buyers focused on authenticity should verify the car's exact wheel package and consult marque-specific references if originality at the trim-package level is important.
Does correct tire fitment matter for a 2004 Mercedes-Benz S600 restoration?
Yes, correct tire fitment matters on a 2004 Mercedes-Benz S600 restoration because the car's stance, wheel-to-fender relationship, and overall presentation depend on matching the proper 18-inch size and configuration. The difference between a standard square setup and an AMG Sport Package staggered setup is especially important on a restoration-minded car.
Using the wrong rear size, mixing profiles, or mounting tires outside the intended wheel-width range can change how the car looks even before it changes how it drives. Restoring one of these sedans properly means confirming package-specific wheel position, maintaining consistent blackwall appearance, and avoiding assumptions based only on overall wheel diameter.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2004 Mercedes-Benz S600?
Yes, modifications can affect tire fitment on a 2004 Mercedes-Benz S600 even when the tire size itself appears correct. Aftermarket wheels, different wheel widths, altered offsets, suspension changes, or body modifications can all change clearance and may influence how 245/45R18 or 265/40R18 tires sit on the car.
A modified S600 should be checked for wheel width, steering clearance, inner-suspension clearance, and fender clearance before replacement tires are chosen. That matters even more on AMG Sport Package cars, where front and rear sizes differ and a staggered fitment leaves less room for casual substitution.
What should I inspect before driving a 2004 Mercedes-Benz S600 on new tires?
Before driving a 2004 Mercedes-Benz S600 on new tires, inspect wheel condition, tire pressure, valve stems, and basic clearance at the front and rear. It is also smart to confirm that the correct size is installed at each wheel position, especially on AMG Sport Package cars with 245/45R18 fronts and 265/40R18 rears.
A short visual check after installation can catch issues such as rubbing, uneven seating, or accidental front-to-rear mismatch. On a large luxury sedan, it also helps to look over suspension wear items and alignment condition so the new tires are not immediately affected by existing mechanical problems.
How often should tires on a 2004 Mercedes-Benz S600 be inspected?
Tires on a 2004 Mercedes-Benz S600 should be inspected regularly, not just when tread looks low. A routine check should include pressure, visible tread wear, sidewall condition, cuts, bulges, and any signs of irregular wear that could point to alignment, wheel, or suspension issues.
Cars that spend long periods parked deserve extra attention because age and storage conditions can affect tire condition even when mileage stays low. Periodic inspection is especially worthwhile on an S600 because its weight, speed capability, and possible staggered setup make early detection of tire or fitment issues more important.
