The 2013 BMW 550i GT xDrive blends grand touring comfort with the all-weather confidence of BMW’s xDrive system, giving the 5 Series Gran Turismo a distinct role as a long-distance luxury performance car. Its hatchback profile and higher-riding stance set it apart from a conventional sedan, but tire fitment still depends on the exact wheel and sport-package setup. This model uses modern radial tire sizes, with 245/50R18 on the Base configuration and staggered 19-inch or 20-inch sport-package combinations front to rear. Available choices range from blackwall performance radials to RWL and redline options in selected sizes. The key is matching the tire to the car’s exact sub-model and wheel diameter before comparing style or series.
Which Tire Size Is Right for The 2013 BMW 550i GT xDrive
Five primary tire sizes are used on the 2013 BMW 550i GT xDrive, and they do not all apply to the same configuration. Fitment changes by sub-model position and wheel package, with 18-inch, 19-inch, and 20-inch rims all appearing on this vehicle. The first step is confirming whether the car is the Base model or a Sport Package front or rear setup, then matching the correct rim diameter and axle position before choosing a tire.
245/50R18 is a metric radial size in which 245 identifies the section width in millimeters, 50 is the aspect ratio, R marks radial construction, and 18 is the wheel diameter in inches. On the 2013 BMW 550i GT xDrive, this size belongs to the Base configuration and reflects a modern radial fitment rather than a vintage sizing system. Available choices in this size include Pro-Trac Street Pro III with either RWL or redline sidewall styling. It is the right starting point when the car retains its 18-inch wheel setup and the goal is choosing between appearance-oriented variations within the correct size.
245/40R20 is a metric radial size with a 245-millimeter section width, a 40-series profile, radial construction, and a 20-inch rim diameter. This size serves as a front fitment on the Sport Package setup, so it should be evaluated as part of a staggered arrangement rather than as a universal 2013 BMW 550i GT xDrive size. Product choices include blackwall performance radials from BFGoodrich and Nitto, along with Pro-Trac Street Pro III in RWL and redline versions. It is the correct path when the car uses 20-inch sport wheels and needs the proper front axle size to match the rear combination.
245/45R19 follows the same metric radial format, using 245 millimeters for section width, a 45 aspect ratio, radial construction, and a 19-inch wheel diameter. On this BMW, it is a front Sport Package size and should be paired with the correct rear 19-inch fitment rather than treated as a stand-alone replacement for every configuration. Blackwall options are available from BFGoodrich and Nitto across several series, including g-Force Comp 2 AS, g-Force Phenom T/A, and Nitto NT555 G2. It makes sense for owners confirming a 19-inch staggered sport setup and comparing series character within the proper front size.
275/35R20 is a wider metric radial size, where 275 is the section width in millimeters, 35 is the profile ratio, R indicates radial construction, and 20 is the rim diameter in inches. This size is used at the rear of the Sport Package configuration, so its role is tied to a staggered 20-inch front-and-rear arrangement on the 2013 BMW 550i GT xDrive. Available products include blackwall performance tires from BFGoodrich and Nitto as well as Pro-Trac Street Pro III in RWL and redline styles. It should be selected only after confirming the car’s 20-inch rear wheel setup and matching it to the correct front size.
275/40R19 is a metric radial rear size with a 275-millimeter section width, a 40-series profile, radial construction, and a 19-inch wheel diameter. On the 2013 BMW 550i GT xDrive, this size belongs to the rear of the 19-inch Sport Package arrangement and is not interchangeable with the Base model’s 18-inch setup. Blackwall choices in this size come from BFGoodrich and Nitto, with series including g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, and Nitto NT555 G2. It is the appropriate size to evaluate when the car uses 19-inch sport wheels and needs the correct rear fitment to preserve the staggered package.
Sub-model fitment matters on the 2013 BMW 550i GT xDrive because the tire size changes with the wheel and sport-package arrangement. The Base model uses a single 18-inch size, while Sport Package fitment splits into front and rear sizes on either 19-inch or 20-inch wheels.
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2013 BMW 550i GT xDrive Base
The Base version uses a single 245/50R18 radial tire size rather than a staggered front-and-rear setup. That makes tire selection more straightforward, with the main choice centered on sidewall presentation and tire series within the correct 18-inch fitment.
The Sport Package front fitment uses either 245/40R20 or 245/45R19, depending on the wheel package on the car. Tire selection starts with confirming whether the front wheels are 20-inch or 19-inch before comparing available blackwall, RWL, redline, or performance-series options.
The Sport Package rear fitment changes to a wider size, using either 275/35R20 or 275/40R19 to match the wheel package. Choosing correctly here means confirming the rear wheel diameter and preserving the intended staggered arrangement with the corresponding front tire size.
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 2013 BMW 550i GT xDrive Tires for Sale
Available 2013 BMW 550i GT xDrive tires vary by wheel package, brand, and sidewall style. BFGoodrich, Nitto, and Pro-Trac options cover several radial series, with blackwall performance choices in the sport sizes and RWL or redline styling available in selected 18-inch and 20-inch fitments.
Owners of a 2013 BMW 550i GT xDrive usually need to confirm the exact tire size by sub-model, wheel diameter, and front or rear position. These FAQs cover fitment, product selection, sidewall choices, and the inspection points that matter before road use.
Tire Size & Fitment
What tire size fits a 2013 BMW 550i GT xDrive?
The 2013 BMW 550i GT xDrive uses several tire sizes depending on configuration. The Base model uses 245/50R18, while Sport Package fitment uses staggered front and rear sizes: either 245/45R19 with 275/40R19 or 245/40R20 with 275/35R20.
The important step is identifying the exact wheel package and whether the tire is for the front or rear axle. A Base car with 18-inch wheels does not use the same sizing pattern as a Sport Package car, and a staggered setup should be kept matched to the correct front and rear rim diameters.
What size rim does a 2013 BMW 550i GT xDrive use?
Rim diameter on the 2013 BMW 550i GT xDrive depends on the configuration. This model appears with 18-inch, 19-inch, and 20-inch wheel diameters, tied directly to the tire size and sub-model setup rather than one universal rim size across the board.
Checking the actual wheel diameter on the car should come before choosing any tire. The Base model uses an 18-inch fitment, while Sport Package versions use either 19-inch or 20-inch front-and-rear combinations, so selecting by appearance alone can lead to the wrong size even when the tire width seems close.
Why does the 2013 BMW 550i GT xDrive have more than one tire size?
Multiple tire sizes appear on the 2013 BMW 550i GT xDrive because fitment changes between the Base model and the Sport Package arrangements. The Sport Package also uses staggered sizing, with narrower front tires and wider rear tires on either 19-inch or 20-inch wheels.
That means tire selection is tied to both the car’s configuration and the axle position. A front Sport Package tire is not the same as the rear size, and neither should be confused with the Base model’s single-size setup, so wheel diameter and front-versus-rear placement both need to be confirmed first.
Choosing the Right Tire
What should I consider when choosing a 2013 BMW 550i GT xDrive tire?
Start with the exact tire size and wheel diameter used on the car, then confirm whether the vehicle has the Base setup or a Sport Package front-and-rear combination. All primary fitments for the 2013 BMW 550i GT xDrive are radial, but the available products vary by brand, series, and sidewall treatment.
After size is settled, compare the tire’s intended character with how the car is used. Some fitments lean toward blackwall performance tires from BFGoodrich and Nitto, while selected sizes also offer Pro-Trac RWL or redline styling for owners who want a more custom visual presentation.
What sidewall styles are available for 2013 BMW 550i GT xDrive tires?
Sidewall style depends on the tire size selected for the 2013 BMW 550i GT xDrive. Blackwall options are available in the sport-oriented 19-inch and 20-inch sizes, while RWL and redline versions appear in selected Pro-Trac Street Pro III fitments, including 245/50R18, 245/40R20, and 275/35R20.
That gives the owner two different directions: a more contemporary blackwall look or a stronger visual statement with raised white letters or a redline. The right choice still begins with the vehicle’s exact size and wheel package, since sidewall style availability changes with the specific fitment.
What brands offer tires for the 2013 BMW 550i GT xDrive?
Tires for the 2013 BMW 550i GT xDrive are available from BFGoodrich, Nitto, and Pro-Trac. Brand availability depends on the size, with BFGoodrich and Nitto concentrated in the 19-inch and 20-inch sport sizes, while Pro-Trac appears in selected 18-inch and 20-inch applications.
Brand choice should be considered after confirming the car’s exact fitment. From there, it helps to compare series character and sidewall presentation rather than focusing on brand name alone, since some sizes offer only blackwall performance tires while others also include RWL or redline alternatives.
Restoration & Appearance
Which tire should I choose for a period-style 2013 BMW 550i GT xDrive?
A period-style approach on a 2013 BMW 550i GT xDrive still starts with the correct modern radial size for the car’s actual wheel package. The Base model’s 245/50R18 and selected 20-inch sport sizes can be found with Pro-Trac Street Pro III sidewall treatments that create a more distinctive visual presentation.
Appearance should be balanced with the way the car is used and how closely it remains to its current wheel setup. Owners pursuing a more original-looking late-model presentation may prefer blackwall sport tires, while a more customized period-inspired look can point toward RWL or redline styling in the sizes where those are offered.
How does tire construction affect the appearance of a restored 2013 BMW 550i GT xDrive?
Construction is straightforward on this model because the primary fitments are all radial. The visible appearance difference comes less from bias-ply versus radial choice and more from sidewall treatment, tire series, and whether the car wears the Base 18-inch setup or the larger staggered sport-package wheels.
That makes wheel-and-tire presentation especially important on a 2013 BMW 550i GT xDrive. A blackwall performance tire gives a contemporary luxury-sport look, while RWL or redline options add more visual emphasis in the sizes where they are available, so the final choice should reflect the car’s intended style and overall stance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2013 BMW 550i GT xDrive?
Yes, modifications can change tire fitment on a 2013 BMW 550i GT xDrive even when the tire size looks close on paper. Aftermarket wheels, altered offsets, suspension changes, or ride-height changes can affect how a 245- or 275-section tire sits within the wheelhouse and how it clears during steering or suspension travel.
That matters most on Sport Package cars because the setup is staggered and split by axle. Any change in wheel width or diameter should be checked carefully against the intended front or rear size, along with clearance at full lock and under compression before the car is driven regularly.
What should I inspect before driving a 2013 BMW 550i GT xDrive on new tires?
Before road use, check that each tire matches the correct size for its wheel and axle position, then inspect inflation, bead seating, and visible clearance around the fenders and suspension. It also helps to verify that the car is not mixing Base-model sizing with a staggered Sport Package arrangement.
A broader inspection is worthwhile on any performance-oriented grand touring car. Look over the wheels for damage, confirm there are no rubbing marks, and make sure older suspension or alignment issues are not being carried over to the new tires, since those problems can quickly affect wear and drivability.
How often should tires on a 2013 BMW 550i GT xDrive be inspected?
Tires on a 2013 BMW 550i GT xDrive should be inspected regularly for air loss, uneven wear, cuts, bulges, and sidewall damage. On a car that sees occasional use, condition matters just as much as tread depth, especially when the vehicle carries wider rear tires in a staggered sport configuration.
A quick visual check before drives and a more thorough inspection at routine service intervals is a sensible habit. Owners should also keep an eye on age-related condition, since low-use vehicles can develop problems long before the tread is worn out, and staggered fitments make rotation options more limited.
