The 2011 BMW 550i xDrive sits in the modern sport-luxury sedan category with the kind of power, refinement, and all-weather capability that makes tire selection more than a routine replacement decision. This generation blends executive-car comfort with the sharper response expected from a V8 BMW, so the right size and wheel pairing matter. Tire fitment centers on radial sizes in 18-inch and 19-inch diameters, with the Sport Package using a staggered 19-inch front and rear setup. Available choices lean toward blackwall performance radials from BFGoodrich and Nitto across several series. The key is confirming whether the car has the standard wheel package or the staggered Sport Package before choosing tires.
Which Tire Size Is Right for The 2011 BMW 550i xDrive
The 2011 BMW 550i xDrive uses three primary tire sizes, and the correct one depends on wheel package and position on the car. The Base model uses 245/45R18 on an 18-inch rim, while the Sport Package uses 19-inch wheels with 245/40R19 in front and 275/35R19 in the rear. Before selecting a tire, confirm both the sub-model and the wheel diameter, then match front and rear sizing carefully on staggered setups.
245/45R18 is a metric radial size in which 245 is the section width in millimeters, 45 is the aspect ratio, R identifies radial construction, and 18 is the wheel diameter in inches. On the 2011 BMW 550i xDrive, this size belongs to the Base model and supports a standard 18-inch wheel setup rather than the staggered Sport Package arrangement. Available choices include blackwall radials from BFGoodrich and Nitto in series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. This size is the right starting point when the car retains its 18-inch wheels and a square fitment.
245/40R19 is a metric radial size that uses a 245-millimeter section width, a 40-series profile, radial construction, and a 19-inch rim diameter. On the 2011 BMW 550i xDrive, this is the front tire size for the Sport Package setup, so it should be treated as part of a staggered front-and-rear pairing rather than a universal fitment for every car. BFGoodrich offers this size in blackwall g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A lines. It is the correct choice when the car has 19-inch front Sport Package wheels and the matching rear size is also being verified.
275/35R19 is a wider metric radial size with a 275-millimeter section width, a 35-series profile, radial construction, and a 19-inch rim diameter. On the 2011 BMW 550i xDrive, this size is used at the rear on Sport Package cars, creating the staggered 19-inch setup paired with 245/40R19 fronts. Product choices in this size include blackwall radials from BFGoodrich and Nitto, with series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. This is the size to evaluate when rear-wheel width and rear-position fitment are the deciding factors.
Sub-model fitment matters on the 2011 BMW 550i xDrive because the standard car and the Sport Package do not share the same wheel setup. The Base model uses one 18-inch size, while the Sport Package uses a staggered 19-inch front and rear combination that must be matched by axle position.
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2011 BMW 550i xDrive Base
The 2011 BMW 550i xDrive Base uses a single radial tire size on 18-inch wheels rather than the staggered 19-inch Sport Package arrangement. That keeps tire selection more straightforward, with the main decision centered on brand and tire series within the correct size.
The Sport Package front fitment uses its own 19-inch radial size and is only one half of the staggered setup on this car. Front-tire selection should be matched to the rear fitment so the overall wheel-and-tire package stays consistent with the Sport Package layout.
The Sport Package rear fitment uses a wider 19-inch radial tire than the front, reflecting the staggered setup on this sub-model. Rear tire choice should be made with axle position in mind, especially if wheel widths or prior tire changes have altered the car from its original Sport Package configuration.
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 2011 BMW 550i xDrive Tires for Sale
Available 2011 BMW 550i xDrive tire choices center on blackwall radial performance tires from BFGoodrich and Nitto. Across the 18-inch and 19-inch sizes, the main comparison points are tire series, wheel-width compatibility, and whether the car uses the standard square setup or the staggered Sport Package arrangement.
Common 2011 BMW 550i xDrive tire questions usually come down to identifying the correct size by wheel package, understanding the staggered Sport Package setup, and comparing radial tire choices by brand, series, and fitment details.
Tire Size & Fitment
What tire size fits a 2011 BMW 550i xDrive?
The 2011 BMW 550i xDrive uses 245/45R18 in Base trim. Sport Package cars use a staggered 19-inch setup with 245/40R19 in front and 275/35R19 in the rear. All of these are radial tire sizes, but they do not serve the same role on the car.
The first step is identifying whether the car has the standard 18-inch wheel package or the 19-inch Sport Package setup. On Sport Package cars, front and rear tires are different sizes, so replacement should be matched to wheel position as well as wheel diameter.
What size rim does a 2011 BMW 550i xDrive use?
The 2011 BMW 550i xDrive uses either an 18-inch or 19-inch rim, depending on configuration. The Base model uses an 18-inch wheel with 245/45R18 tires, while the Sport Package uses 19-inch wheels with 245/40R19 front tires and 275/35R19 rear tires.
Rim diameter has to match the tire size exactly, so an 18-inch tire cannot be mounted on a 19-inch wheel or the other way around. It is also worth checking actual wheel width before ordering, especially if the car has aftermarket wheels or a previous owner changed the original setup.
Why does the 2011 BMW 550i xDrive have more than one tire size?
More than one tire size appears because the 2011 BMW 550i xDrive was offered with different wheel packages. The Base model uses a single 18-inch size at all four corners, while the Sport Package uses a staggered arrangement with one size in front and a wider size in the rear.
That difference affects more than just appearance. A square setup simplifies rotation and replacement, while a staggered setup requires paying close attention to axle position. Matching the tire to the car's exact wheel package avoids ordering a front size for the rear or mixing 18-inch and 19-inch fitments.
Choosing the Right Tire
What should I consider when choosing a tire for a 2011 BMW 550i xDrive?
Start with the correct tire size for the car's wheel package. A Base car uses 245/45R18, while a Sport Package car uses 245/40R19 front and 275/35R19 rear. From there, compare radial tire series, wheel-width compatibility, load figures where shown, and the kind of driving the car actually sees.
A 550i xDrive combines performance and weight, so the tire should suit both the vehicle's character and the wheel it is mounted on. It helps to confirm whether the car is still on stock wheels, because an otherwise correct size can become a poor choice if wheel width or axle position has changed.
What brands offer tires for the 2011 BMW 550i xDrive?
Tires for the 2011 BMW 550i xDrive are available from BFGoodrich and Nitto in the applicable sizes. Depending on size, choices include BFGoodrich g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and the Nitto NT555 G2, all in blackwall radial form.
Brand choice is only part of the decision. The more useful comparison is how each tire lines up with the car's exact size, wheel-width range, and intended use. A Base car and a Sport Package car may both use quality radial options, but the correct size and wheel pairing still come first.
What tire series are available for the 2011 BMW 550i xDrive?
Available series for the 2011 BMW 550i xDrive include BFGoodrich g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and Nitto NT555 G2, depending on the tire size. These choices are offered across the 18-inch Base fitment and the 19-inch Sport Package front and rear sizes.
Series differences matter because they give the buyer a way to compare construction details and fitment specs within the same basic size. Once the correct size is confirmed, it becomes easier to narrow the field by wheel-width compatibility, load information where shown, and whether a square or staggered setup is being replaced.
Restoration & Appearance
Does correct tire fitment matter for a 2011 BMW 550i xDrive restoration?
Yes, correct tire fitment still matters on a 2011 BMW 550i xDrive, even though it is a modern car by tire-sizing standards rather than a vintage restoration case. The visible difference between the Base 18-inch setup and the Sport Package staggered 19-inch setup changes both the stance and the overall presentation of the car.
Keeping the proper wheel-and-tire relationship helps preserve the car's intended look and avoids visual mismatches between front and rear. If originality is part of the goal, confirm the wheel package already on the vehicle before replacing tires, especially on cars that may have been modified with aftermarket wheels.
How does tire construction affect the appearance of a restored 2011 BMW 550i xDrive?
On the 2011 BMW 550i xDrive, appearance differences come more from size, wheel diameter, and front-to-rear proportion than from bias-ply versus radial construction, because the primary fitments are radial. The available options in these sizes are blackwall performance radials, which suit the car's modern sport-luxury character.
For a clean restoration-oriented presentation, the main appearance question is whether the car retains its original-style wheel package and the correct front and rear sizing. A Sport Package car with mismatched rear width or an incorrect 18-inch substitute will look noticeably different even if the tire itself is otherwise high quality.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2011 BMW 550i xDrive?
Yes, modifications can affect tire fitment on a 2011 BMW 550i xDrive. Aftermarket wheels, suspension changes, altered ride height, or non-stock offsets can change how a 245/45R18, 245/40R19, or 275/35R19 tire sits in the wheelwell and how much clearance it has during steering and suspension movement.
A tire size that matches the original application still needs to match the actual wheel on the car. It is smart to verify wheel diameter, wheel width, and front-to-rear setup before ordering, especially on Sport Package cars where the wider rear tire leaves less room for guesswork.
What should I inspect before driving a 2011 BMW 550i xDrive on new tires?
Before driving, inspect inflation pressure, wheel fastener torque, tread and sidewall condition, and make sure each tire size is mounted in the correct position. On a Sport Package 2011 BMW 550i xDrive, confirm that the 245/40R19 tires are on the front and the 275/35R19 tires are on the rear.
A quick clearance check is also worthwhile, especially if the car has aftermarket wheels or recent suspension work. Turn the steering from lock to lock, look for any rubbing marks, and watch for air loss after the first few drives so small fitment or mounting issues are caught early.
How often should tires on a 2011 BMW 550i xDrive be inspected?
Tires on a 2011 BMW 550i xDrive should be inspected regularly, not only when replacement is due. Check them for uneven wear, cracking, cuts, bulges, low pressure, and any sign that the front and rear tires on a staggered car are wearing differently from one another.
Cars that are driven infrequently still need attention because age and storage conditions can affect tire condition even when tread looks acceptable. Monthly pressure checks and a closer inspection before longer drives help catch problems early, particularly on performance-oriented 19-inch setups with lower-profile sidewalls.
