The 2004 Chrysler 300M belongs to the final chapter of Chrysler’s cab-forward sedan era, blending full-size comfort with a more assertive touring-sedan look than many domestic four-doors of its time. It remains a distinctive modern classic for owners who appreciate sharp proportions and a driver-focused personality in an everyday performance sedan. Tire fitment on the 2004 Chrysler 300M centers on two radial sizes, with 225/55R17 used on the Base and w/Performance Pkg. models and 245/45R18 used on the Special. That split shapes the real decision: confirming the exact sub-model and wheel diameter, then choosing among blackwall, whitewall, redline, or performance-oriented radial options that suit the car’s appearance and intended road use.
Which Tire Size Is Right for The 2004 Chrysler 300M
The 2004 Chrysler 300M uses two primary tire sizes, and the correct one depends on the exact sub-model and wheel diameter. Base and w/Performance Pkg. cars use 225/55R17 on 17-inch rims, while the 300M Special uses 245/45R18 on 18-inch rims. Before choosing a tire, confirm which wheels are actually on the car, especially if it has been changed from its original setup.
In 225/55R17, the 225 is the nominal section width in millimeters, 55 is the aspect ratio, R identifies radial construction, and 17 is the rim diameter in inches. This is a modern metric radial size that suits the standard 2004 Chrysler 300M fitment used on Base and w/Performance Pkg. models. Available choices range from performance-oriented BFGoodrich g-Force series tires in blackwall form to Silvertown Radial versions with wide whitewall or redline sidewall styling. It is the right size to evaluate when the goal is either a contemporary road-going setup or a more distinctive period-inspired presentation on a 17-inch wheel.
In 245/45R18, the 245 is the nominal section width in millimeters, 45 is the aspect ratio, R means radial construction, and 18 designates the wheel diameter in inches. This modern metric radial size belongs to the 2004 Chrysler 300M Special and reflects that model’s larger-wheel fitment. Product choices in this size focus on blackwall performance radials from BFGoodrich and Nitto, including multiple g-Force series options and the NT555 G2. It is the size to consider when maintaining the Special’s 18-inch-wheel setup and comparing tire series, load characteristics, and rim-width compatibility within that configuration.
Sub-model fitment matters on the 2004 Chrysler 300M because tire size changes with the model and wheel package. The Base and w/Performance Pkg. share one setup, while the Special uses a different size on a different rim diameter, so identifying the exact version comes first.
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2004 Chrysler 300M Base
The 2004 Chrysler 300M Base uses a 225/55R17 radial tire on a 17-inch wheel. That makes the next decision less about fitment variation and more about selecting the right blackwall, redline, or wide whitewall presentation for the car’s use and appearance goals.
The 2004 Chrysler 300M Special uses a 245/45R18 radial tire on an 18-inch wheel. Tire selection here centers on preserving the Special’s larger-wheel setup while comparing performance-oriented blackwall options and confirming wheel width compatibility before changing brands or series.
The 2004 Chrysler 300M w/Performance Pkg. uses the same 225/55R17 radial size as the Base model. That shared fitment keeps size choice straightforward, leaving construction, sidewall styling, and tire-series character as the main factors when narrowing the final selection.
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 Chrysler 300M Tires for Sale
Available 2004 Chrysler 300M tires include BFGoodrich and Nitto radial options across 225/55R17 and 245/45R18 sizes. Choices vary by tire series, sidewall style, and rim-width compatibility, with blackwall performance tires joined by wide whitewall and redline selections in 225/55R17.
Owners shopping tires for a 2004 Chrysler 300M usually need to sort out sub-model size differences, 17-inch versus 18-inch wheel fitment, and the choice between performance blackwalls and restoration-inspired sidewall styles. These answers focus on the questions that matter most before mounting a new set.
Tire Size & Fitment
What tire size fits a 2004 Chrysler 300M?
The 2004 Chrysler 300M uses two tire sizes depending on sub-model. The Base and w/Performance Pkg. models use 225/55R17 radial tires, while the 300M Special uses 245/45R18 radial tires. Both are modern metric radial sizes, but they are tied to different wheel diameters and should not be treated as one universal fitment for every 300M.
The practical first step is confirming whether the car is a Base, Special, or w/Performance Pkg. model and then verifying the wheel diameter actually on the vehicle. Many cars from this era have seen wheel changes over time, so checking the tire sidewall and the wheel itself helps prevent ordering a 17-inch tire for an 18-inch setup, or the reverse.
What size rim does a 2004 Chrysler 300M use?
A 2004 Chrysler 300M uses either a 17-inch or 18-inch rim, depending on the sub-model. The Base and w/Performance Pkg. models use 17-inch rims with 225/55R17 tires, and the 300M Special uses 18-inch rims with 245/45R18 tires. Rim diameter is built into the tire size itself, so the final number on the tire remains the quickest reference point.
Checking rim diameter before buying tires matters because a 17-inch tire cannot be mounted on an 18-inch wheel, and an 18-inch tire cannot be mounted on a 17-inch wheel. It is also worth confirming wheel width if the car has aftermarket wheels, since product options within these sizes carry different approved rim-width ranges.
Do all 2004 Chrysler 300M sub-models use the same tire size?
No, the 2004 Chrysler 300M does not use one tire size across every sub-model. The Base and w/Performance Pkg. share 225/55R17 radial tires, while the Special uses 245/45R18 radial tires. The difference is more than just width and profile, because the two fitments also use different rim diameters.
That distinction affects both tire selection and wheel compatibility. A buyer who owns a Special should stay focused on 18-inch fitment, while a Base or w/Performance Pkg. owner should shop within the 17-inch group. If the car’s current wheels do not match its original sub-model configuration, use the actual wheel and tire setup on the vehicle as the starting point.
Choosing the Right Tire
What should I consider when choosing a tire for a 2004 Chrysler 300M?
Start with the correct size for the exact 2004 Chrysler 300M sub-model: 225/55R17 for Base and w/Performance Pkg., or 245/45R18 for Special. From there, compare the tire’s construction, approved rim-width range, sidewall style, tire series, and any load figures that matter to your intended use. The available choices are all radial, but they serve different visual and driving priorities.
A car kept close to its original look may call for a different tire than one used mainly as a modern road car. Blackwall performance radials suit a contemporary presentation, while redline or wide whitewall options can change the car’s visual character considerably. Matching the tire to the wheel setup, appearance goal, and how the car will actually be driven leads to a smarter selection.
What sidewall styles are available for 2004 Chrysler 300M tires?
Sidewall style depends on the tire size used on the 2004 Chrysler 300M. In 225/55R17, the available styles include blackwall, wide whitewall, and redline. In 245/45R18, the available options are blackwall performance radials. That means appearance flexibility is greater on the 17-inch fitment than on the Special’s 18-inch setup.
Sidewall choice affects the car’s overall presentation more than many owners expect. A blackwall keeps the look modern and understated, while a redline or wide whitewall introduces a much stronger vintage or custom-inspired visual cue. The best approach is to choose the sidewall treatment that fits the car’s wheel design, paint, trim, and the kind of statement you want it to make.
What brands offer tires for the 2004 Chrysler 300M?
BFGoodrich and Nitto offer tires for the 2004 Chrysler 300M. BFGoodrich appears in both 225/55R17 and 245/45R18, covering g-Force performance tires as well as Silvertown Radial options in the 17-inch size. Nitto appears in 245/45R18 with the NT555 G2, giving 300M Special owners another blackwall performance radial to compare within that fitment.
Brand choice should be weighed alongside tire series, sidewall styling, wheel-width compatibility, and the intended role of the car. Some owners want a straightforward performance-oriented blackwall, while others want a more distinctive visual treatment for a cruiser or show-oriented sedan. Looking at the full combination of size, series, and appearance will be more useful than choosing by brand name alone.
Restoration & Appearance
Which tire should I choose for a period-style 2004 Chrysler 300M?
A period-style 2004 Chrysler 300M tire choice starts with the correct sub-model size, then moves to appearance. For Base and w/Performance Pkg. cars using 225/55R17, BFGoodrich Silvertown Radial options with redline or wide whitewall sidewalls create a more distinctive, era-flavored look than a plain blackwall performance tire. The 300M Special’s 245/45R18 choices stay in a more contemporary blackwall performance direction.
The right choice depends on whether the goal is a showroom-clean early-2000s sedan impression, a custom-styled presentation, or a road-focused setup. Tire size should remain correct for the wheel package, but sidewall treatment can shift the car’s personality dramatically. If strict originality matters, compare the tire’s visual treatment against period photos, marque references, and the car’s actual trim and wheel combination.
How does tire construction affect the appearance of a restored 2004 Chrysler 300M?
On the 2004 Chrysler 300M, construction itself is not the visual dividing line because the available fitments are radial. The bigger appearance difference comes from sidewall treatment and tire character within that radial category. A blackwall g-Force or Nitto performance tire gives the car a more modern sport-sedan look, while a redline or wide whitewall 225/55R17 changes the visual tone considerably.
That means restoration-minded owners should focus on how the tire presents on the wheel rather than trying to choose between radial and bias-ply for this application. The 17-inch fitment offers the most room for appearance tuning, while the 18-inch Special fitment stays more performance-oriented. Keeping the proper size and wheel diameter in place is what preserves the car’s stance and overall proportions.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2004 Chrysler 300M?
Yes, modifications can affect tire fitment on a 2004 Chrysler 300M even when the tire size looks close on paper. Aftermarket wheels, altered wheel widths, suspension changes, lowering, or body modifications can all change clearance and compatibility. That matters on this car because the factory fitments already split between a 17-inch setup and an 18-inch setup depending on sub-model.
A car with non-original wheels should be checked for actual rim diameter and width before selecting a tire. Clearance at the fender, strut, and steering range also deserves attention, especially if a wider wheel or different offset has been installed. Using the present wheel-and-suspension configuration as the basis for fitment is more reliable than assuming the car still matches its original specification.
What should I inspect before driving a 2004 Chrysler 300M on new tires?
Before driving a 2004 Chrysler 300M on new tires, inspect wheel condition, verify the correct tire size for the sub-model, and check that the tires are mounted on the proper rim diameter and width. Tire pressure should also be set correctly, and the car should be examined for visible issues such as damaged wheels, uneven old tire wear, or suspension problems that may affect the new set.
A short road test should include attention to vibration, pull, rubbing, and steering feel. It also helps to recheck pressure and inspect for any clearance concerns after the first few miles, especially if the car has aftermarket wheels or a modified stance. Catching those issues early protects both the tires and the driving experience.
How often should tires on a 2004 Chrysler 300M be inspected?
Tires on a 2004 Chrysler 300M should be inspected regularly, not just when tread looks low. A visual check for cracking, bulges, cuts, uneven wear, and air loss is worthwhile before routine driving, and especially before a longer trip. On a car that sees occasional use, age and storage conditions can matter as much as mileage.
A consistent inspection routine helps catch problems that can be overlooked on a low-use modern classic. Pressure should be checked periodically, and any sign of repeated air loss or unusual wear should lead to a closer look at the wheel, alignment, and suspension. Keeping the tires clean, properly inflated, and protected from long exposure to heat and sunlight also supports longer service life.
