The 2004 BMW 745Li marked the long-wheelbase version of BMW’s early E65-era 7 Series, a sedan known for combining flagship luxury with a more assertive, modern design language than earlier generations. Buyers today often approach it as both a premium driver and a preservation-minded modern classic. Tire fitment on the 2004 BMW 745Li centers on radial construction, with 245/50R18 used on the Base model and a 19-inch staggered setup of 245/45R19 front and 275/40R19 rear also appearing. Available choices range from blackwall performance radials to RWL and redline treatments in 18-inch form. The key is confirming the exact wheel and front-to-rear setup before selecting tires.
Which Tire Size Is Right for The 2004 BMW 745Li
The 2004 BMW 745Li uses three primary tire sizes, and the right one depends first on whether the car has the 18-inch Base setup or the 19-inch staggered front-and-rear arrangement. Because both 18-inch and 19-inch rim diameters are used, wheel diameter and axle position should be confirmed before choosing a tire. Once that is settled, the decision becomes one of brand, sidewall style, tire series, and the character of the available radial options.
A 245/50R18 tire is a metric radial with a 245-millimeter section width, a 50-series aspect ratio, and fitment for an 18-inch wheel. On the 2004 BMW 745Li, this size applies to the Base configuration that uses an 18-inch radial setup rather than the staggered 19-inch arrangement. Product choice in this size includes Pro-Trac Street Pro III tires with either RWL or redline sidewall styling, giving the size a distinctly appearance-driven split. It is the right path when the car retains its 18-inch wheel package and the goal is matching that setup rather than moving to a staggered 19-inch combination.
A 245/45R19 tire is a metric radial using a 245-millimeter width, a 45-series profile, and a 19-inch rim diameter. On the 2004 BMW 745Li, this size serves the front position in the 19-inch staggered configuration, so it should be treated as a front-axle fitment rather than a universal size for every setup. Available choices include BFGoodrich and Nitto products, with blackwall sidewalls and several performance-oriented tire series. It is the size to evaluate when the car already uses 19-inch front wheels and the buyer wants to compare series, rim-width compatibility, and other product differences within that front fitment.
A 275/40R19 tire is a metric radial with a wider 275-millimeter section width, a 40-series profile, and a 19-inch wheel diameter. On the 2004 BMW 745Li, this size is used at the rear in the staggered 19-inch setup, pairing with 245/45R19 fronts rather than serving as a standalone all-around fitment. BFGoodrich and Nitto options are available here, all in blackwall form, with multiple g-Force and Nitto series choices that differ in specification and intended character. This is the rear size to verify when maintaining the car’s staggered layout and checking wheel width and rear clearance before selection.
Sub-model fitment on the 2004 BMW 745Li is not a one-size situation, because the covered configurations separate the standard 18-inch setup from the staggered 19-inch front and rear arrangement. Checking the exact sub-model matters so the tire size matches the wheel diameter and axle position already on the car.
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2004 BMW 745Li Base
The 2004 BMW 745Li Base uses the 245/50R18 radial size as its primary fitment. Tire selection here is mainly about staying with the 18-inch setup and choosing between the available sidewall presentations and tire style rather than sorting through a staggered front-and-rear package.
The 2004 BMW 745Li Base Front uses 245/45R19 radial tires as part of the 19-inch staggered arrangement. That means front tire choice should be made alongside the correct rear size, with attention to wheel width and keeping the intended front-to-rear relationship intact.
The 2004 BMW 745Li Base Rear uses the wider 275/40R19 radial size in the staggered 19-inch setup. Rear tire selection should focus on maintaining that wider rear fitment, comparing the available blackwall performance choices, and confirming the existing wheel specification before replacement.
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 BMW 745Li Tires for Sale
Available 2004 BMW 745Li tire choices span Pro-Trac, BFGoodrich, and Nitto, with differences by size in tire series, blackwall versus RWL or redline sidewall style, and rim-width specifications on several 19-inch options. The product grid is most useful for comparing setup-specific radial choices once wheel diameter and axle position are confirmed.
These 2004 BMW 745Li FAQs focus on the questions that matter most before replacement: which tire size belongs on the car, how the 18-inch and staggered 19-inch setups differ, and what to inspect before putting a modern luxury sedan back on the road.
Tire Size & Fitment
What tire size fits a 2004 BMW 745Li?
The 2004 BMW 745Li uses three primary tire sizes, depending on configuration. The Base model uses 245/50R18, while the staggered 19-inch setup uses 245/45R19 at the front and 275/40R19 at the rear. All of these are radial tire sizes.
The practical first step is confirming which wheels are on the car now. A 745Li with 18-inch wheels should stay with the 18-inch size, while a car with the 19-inch staggered arrangement needs the correct front and rear pairing. If the car has been changed from stock-style wheel sizing, verify the actual wheel diameters before ordering tires.
What size rim does a 2004 BMW 745Li use?
The 2004 BMW 745Li uses either 18-inch or 19-inch rims, depending on the tire setup. The 245/50R18 size is for an 18-inch rim, while both 245/45R19 and 275/40R19 are for 19-inch rims in the staggered configuration.
Rim diameter is the first fitment checkpoint because the tire bead must match the wheel exactly. On 19-inch cars, axle position matters too, since the front and rear sizes are different even though both use 19-inch wheels. If the sedan has aftermarket wheels, check not only diameter but also wheel width before comparing tire options.
Why does the 2004 BMW 745Li have more than one tire size?
More than one tire size appears on the 2004 BMW 745Li because the car was fitted with different wheel setups. One version uses a single 18-inch size, 245/50R18, while another uses a staggered 19-inch arrangement with 245/45R19 in front and 275/40R19 in the rear.
That difference changes the buying process. Instead of choosing by year and model alone, the owner needs to identify the actual wheel package on the car and, on 19-inch setups, whether the tire is for the front or rear axle. Checking the sidewall of the current tires and measuring wheel diameter avoids mixing sizes from two different configurations.
Choosing the Right Tire
What should I consider when choosing a 245/50R18 tire for a 2004 BMW 745Li?
For a 2004 BMW 745Li running 245/50R18 tires, the main considerations are staying with the correct 18-inch size, confirming radial construction, and deciding what kind of appearance suits the car. In this size, Pro-Trac Street Pro III options are available with either RWL or redline sidewall styling.
That makes the decision less about size and more about presentation and wheel compatibility. A buyer preserving a more distinctive visual look may lean toward one sidewall treatment, while another may simply want the correct 18-inch radial fitment on the car. It is still worth checking the wheel itself, especially if the 745Li has changed hands or has aftermarket rims.
What sidewall styles are available for 2004 BMW 745Li tires?
Sidewall styling on 2004 BMW 745Li tires depends on the size being used. The 18-inch 245/50R18 options include RWL and redline sidewall treatments, while the available 245/45R19 and 275/40R19 choices are blackwall designs.
That split means sidewall appearance is tied directly to the wheel setup already on the car. An owner with the 18-inch configuration has more visual variety, while the 19-inch staggered setup is centered on blackwall performance tires. Choosing among them comes down to whether the goal is a cleaner modern look or a more distinctive period-inspired presentation.
What brands offer tires for the 2004 BMW 745Li?
Tires for the 2004 BMW 745Li are available from Pro-Trac, BFGoodrich, and Nitto. Pro-Trac appears in the 245/50R18 size, while BFGoodrich and Nitto cover the 19-inch 245/45R19 front and 275/40R19 rear sizes with several different radial tire series.
The useful comparison is not simply brand name, but how each brand shows up in the exact size the car needs. On 19-inch setups, the choice also includes differences in series and some rim-width specifications. Matching the brand comparison to the correct front or rear size keeps the search focused on tires that suit the car’s actual wheel package.
Restoration & Appearance
Which tire should I choose for a period-style 2004 BMW 745Li?
A period-style approach for a 2004 BMW 745Li starts with keeping the correct wheel-and-tire configuration already intended for the car. That means choosing 245/50R18 for the 18-inch Base setup or preserving the 245/45R19 front and 275/40R19 rear pairing on the staggered 19-inch arrangement.
Appearance then becomes a matter of sidewall style and overall presentation. The 18-inch size offers RWL and redline choices that create a more distinctive look, while the 19-inch options remain blackwall and more understated. For buyers focused on exact restoration detail, vehicle-specific historical references are still worth consulting before treating any sidewall treatment as original to the car.
Does correct tire fitment matter for a 2004 BMW 745Li restoration?
Correct tire fitment matters on a 2004 BMW 745Li restoration because this car can appear either with a single 18-inch size or with a staggered 19-inch front-and-rear combination. Using the wrong diameter or mixing front and rear sizes incorrectly can change both the look of the car and the way the setup is presented.
On a modern luxury sedan like the 745Li, visual proportion is closely tied to the wheel package. A restoration-minded owner should confirm the wheel diameter, the intended front and rear arrangement, and the sidewall style that best matches the car’s character. Even when the tire size is correct, those details influence whether the finished result looks cohesive and deliberate.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2004 BMW 745Li?
Yes, modifications can affect tire fitment on a 2004 BMW 745Li. Changes such as aftermarket wheels, altered wheel widths, suspension lowering, or body and alignment changes can all influence whether 245/50R18, 245/45R19, or 275/40R19 remains appropriate for the car’s actual setup.
A sedan with non-original wheels may need more than a simple year-make-model check. The owner should confirm wheel diameter first, then look at wheel width, front-to-rear sizing, and clearance during steering and suspension movement. That matters most on the staggered 19-inch arrangement, where the front and rear tires serve different positions and should not be treated as interchangeable.
What should I inspect before driving a 2004 BMW 745Li on new tires?
Before driving a 2004 BMW 745Li on new tires, inspect the wheels for correct diameter and condition, make sure the tire sizes match the car’s actual setup, and confirm that the front and rear positions are correct on staggered 19-inch cars. Tire pressure and visible seating on the rim should also be checked.
It is also smart to look over suspension and steering condition before putting miles on the car. Uneven wear, rubbing marks, vibration, sidewall contact, or persistent air loss after installation deserve attention right away. On a low-use luxury car, a brief local test drive followed by a second inspection can catch fitment or mounting issues before a longer trip.
How often should tires on a 2004 BMW 745Li be inspected?
Tires on a 2004 BMW 745Li should be inspected regularly, especially if the car is driven infrequently. A quick visual check before use and a more careful inspection at routine service intervals helps catch tread wear, cracking, cuts, bulges, and pressure loss before they become larger problems.
Cars that spend long periods parked deserve extra attention because age and storage conditions can matter as much as mileage. Check the sidewalls, inner shoulders, and tread surfaces, and watch for signs of uneven wear that could point to alignment or suspension issues. On staggered 19-inch setups, inspect front and rear tires separately rather than assuming they wear the same way.
