The 2019 BMW 640i xDrive Gran Coupe blends coupe-like rooflines with grand touring comfort and all-wheel-drive confidence, making it a distinctly modern performance sedan rather than a vintage collector application. Tire selection on this car centers on confirming the exact wheel setup, because the fitment spans 18-, 19-, and 20-inch radial sizes, including staggered front and rear combinations. Available choices lean toward contemporary blackwall performance radials from BFGoodrich and Nitto across several g-Force and NT555 G2 series options. For this BMW, the important decision is matching the right size to the correct position and wheel diameter before comparing tread style, load specification, and intended road use.
Which Tire Size Is Right for The 2019 BMW 640i xDrive Gran Coupe
The 2019 BMW 640i xDrive Gran Coupe uses five primary tire sizes, and the correct one depends on the exact wheel package and whether the car is using a square or staggered setup. Fitment varies by sub-model position and rim diameter, so the first step is confirming whether the car is on 18-, 19-, or 20-inch wheels and whether you are selecting for the front axle, rear axle, or a non-position-specific base fitment.
245/40R19 is a metric radial size in which 245 identifies the nominal section width in millimeters, 40 is the aspect ratio, R designates radial construction, and 19 is the rim diameter in inches. On the 2019 BMW 640i xDrive Gran Coupe, this size serves as one of the front or base fitments in a modern performance-oriented format. Available choices include BFGoodrich options in the g-Force Sport Comp 2, g-Force Comp 2 AS, and g-Force Phenom T/A series, all in blackwall form. This size is the one to evaluate when the car has 19-inch wheels and the wheel position calls for the narrower front-style fitment.
245/45R18 follows the same metric radial convention, with a 245-millimeter nominal width, a 45-series profile, radial construction, and an 18-inch rim diameter. For the 2019 BMW 640i xDrive Gran Coupe, it is a base fitment tied to the 18-inch wheel setup rather than the larger-diameter alternatives. Product choice includes blackwall performance radials from BFGoodrich and Nitto, spanning g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, and NT555 G2 lines. This is the size to check when maintaining the 18-inch configuration and comparing all-season versus more performance-focused product character.
245/35R20 is a metric radial size with a 245-millimeter nominal section width, a lower 35-series profile, radial construction, and a 20-inch wheel diameter. On the 2019 BMW 640i xDrive Gran Coupe, this size is used at the front in the 20-inch staggered setup, pairing lower-profile proportions with the larger wheel package. BFGoodrich offers this size in g-Force Sport Comp 2, g-Force Comp 2 AS, and g-Force Phenom T/A form, while Nitto offers the NT555 G2, all with blackwall styling. Choose this size only when the front wheel diameter and axle position match the 20-inch staggered arrangement.
275/30R20 is a wider metric radial size that uses a 275-millimeter nominal section width, a 30-series profile, radial construction, and a 20-inch rim diameter. On the 2019 BMW 640i xDrive Gran Coupe, this is the rear size used with the 20-inch staggered setup rather than a universal all-around fitment. The available product in this size is a blackwall Nitto NT555 G2, which makes wheel position and tire-matching especially important during replacement. This size belongs on the rear only when the car is already configured with the corresponding 20-inch front and rear wheel package.
275/35R19 is a metric radial size with a 275-millimeter nominal width, a 35-series sidewall profile, radial construction, and a 19-inch rim diameter. For the 2019 BMW 640i xDrive Gran Coupe, it serves as the rear fitment in the 19-inch staggered configuration, complementing the narrower 245/40R19 front size. Available blackwall choices include BFGoodrich g-Force Sport Comp 2, g-Force Comp 2 AS, and g-Force Phenom T/A tires, along with the Nitto NT555 G2. This is the size to verify when replacing rear tires on a 19-inch staggered setup where width, wheel position, and axle-specific fitment matter.
Sub-model fitment on the 2019 BMW 640i xDrive Gran Coupe is position-sensitive rather than one-size-fits-all. Checking whether the car is in its base configuration or using front and rear staggered sizing is essential before choosing a replacement tire.
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2019 BMW 640i xDrive Gran Coupe Base
The Base configuration uses either 245/40R19 or 245/45R18 radial tires, depending on the wheel package on the car. That makes wheel-diameter confirmation the key step before comparing available blackwall performance tire options.
The Base Front position uses either 245/35R20 or 245/40R19 radial tires as part of a front-specific fitment. Tire selection here depends on matching the exact front wheel diameter and keeping the staggered setup consistent with the rear.
The Base Rear position uses either 275/30R20 or 275/35R19 radial tires in a wider rear fitment. Rear-tire replacement should start with wheel-diameter verification and a check that the car still has its intended staggered wheel and tire arrangement.
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 2019 BMW 640i xDrive Gran Coupe Tires for Sale
Available choices for the 2019 BMW 640i xDrive Gran Coupe include blackwall radial tires from BFGoodrich and Nitto across g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, and NT555 G2 series options. The main comparisons are size, wheel diameter, axle position, and series character.
Owners of a 2019 BMW 640i xDrive Gran Coupe usually need to sort out exact tire size, front versus rear fitment, rim diameter, and product differences before replacement. These FAQs focus on the practical details that matter most before the car goes back on the road.
Tire Size & Fitment
What tire size fits a 2019 BMW 640i xDrive Gran Coupe?
The 2019 BMW 640i xDrive Gran Coupe uses 245/45R18, 245/40R19, 245/35R20, 275/35R19, and 275/30R20 radial tire sizes. The 245-width sizes are used in base or front applications, while the 275-width sizes are rear fitments in staggered configurations.
The important step is matching the tire size to the actual wheel package and axle position on the car. A Gran Coupe with 18-inch wheels calls for a different tire than one with 19- or 20-inch wheels, and staggered front and rear setups should be kept in the correct front-to-rear relationship when replacing tires.
What size rim does a 2019 BMW 640i xDrive Gran Coupe use?
The 2019 BMW 640i xDrive Gran Coupe uses 18-inch, 19-inch, and 20-inch rim diameters, depending on the tire size and configuration. The applicable tire sizes pair directly with those wheel diameters, so the rim size must match the final number in the tire size.
A quick check of the wheel itself usually settles the question before ordering tires. On this BMW, rim diameter also helps identify whether the car is in a base fitment or a staggered front and rear arrangement, which matters just as much as the tire width when choosing the correct replacement.
Why does the 2019 BMW 640i xDrive Gran Coupe have more than one tire size?
More than one tire size applies because the 2019 BMW 640i xDrive Gran Coupe was fitted with different wheel packages, including 18-inch, 19-inch, and 20-inch setups. Some configurations also use staggered sizing, with a narrower front tire and a wider rear tire.
That means tire replacement is not just a matter of matching the model name. Checking the exact wheel diameter and whether the car uses the same size at all four corners or different sizes front and rear will prevent choosing a tire that belongs to another Gran Coupe configuration.
Choosing the Right Tire
What should I consider when choosing a tire for a 2019 BMW 640i xDrive Gran Coupe?
Start with the exact size, wheel diameter, and axle position used on the car. The 2019 BMW 640i xDrive Gran Coupe can use several radial sizes, so the right choice depends on whether it has 18-inch base fitment, 19-inch fitment, or a 20-inch staggered setup.
Once size is confirmed, compare tire series, rim-width specifications where stated, load information where available, and the kind of driving the car sees. A buyer deciding between BFGoodrich g-Force variants and the Nitto NT555 G2 should focus on correct application first, then choose the series that best matches expected street use.
What sidewall styles are available for 2019 BMW 640i xDrive Gran Coupe tires?
The available tires for the 2019 BMW 640i xDrive Gran Coupe are offered in blackwall form. That applies across the listed BFGoodrich and Nitto options in the supported 18-, 19-, and 20-inch radial sizes.
Since sidewall appearance does not vary here, the more meaningful comparisons are tire size, front versus rear placement, and series differences such as g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, and NT555 G2. On this BMW, the visual decision is straightforward, while fitment accuracy does the real work.
What brands offer tires for the 2019 BMW 640i xDrive Gran Coupe?
BFGoodrich and Nitto both offer tires for the 2019 BMW 640i xDrive Gran Coupe. Depending on the size, the available choices include BFGoodrich g-Force Sport Comp 2, g-Force Comp 2 AS, and g-Force Phenom T/A tires, along with the Nitto NT555 G2.
Brand choice should come after confirming the exact size and wheel position required by the car. Some sizes have a broader selection than others, especially compared with the single listed option in 275/30R20, so it helps to verify whether you are buying for the front, rear, or a non-staggered base configuration.
Restoration & Appearance
Does correct tire fitment matter for a 2019 BMW 640i xDrive Gran Coupe restoration?
Yes, correct tire fitment still matters even on a late-model grand touring car like the 2019 BMW 640i xDrive Gran Coupe. The right tire size preserves the intended relationship between wheel diameter, front-to-rear stagger, and the car's overall stance.
Appearance on this BMW is more about maintaining the proper modern wheel-and-tire package than choosing vintage sidewall styling. A restoration-minded owner should confirm whether the car remains on its original wheel setup or has been changed, because that determines whether 18-inch, 19-inch, or 20-inch tire sizing belongs on the car.
How does tire selection affect the appearance of a 2019 BMW 640i xDrive Gran Coupe?
Tire selection affects the 2019 BMW 640i xDrive Gran Coupe mainly through profile, width, and whether the car keeps its intended square or staggered layout. The supported sizes all use blackwall styling, so the visual change comes from the proportions of the tire against the wheel.
A Gran Coupe on 20-inch front and rear staggered tires presents differently than one on 18-inch base fitment, even though both remain within supported sizing. Keeping the correct axle-specific width and rim diameter helps preserve the clean, performance-oriented look BMW built into the car's wheel and tire package.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 BMW 640i xDrive Gran Coupe?
Yes, modifications can affect tire fitment on a 2019 BMW 640i xDrive Gran Coupe. Aftermarket wheels, suspension changes, altered ride height, or spacer use can change the clearances and wheel specifications that the original 245- and 275-width tire sizes were chosen around.
Any time the car has been changed from stock wheel or suspension settings, check wheel diameter, width, and clearance at full steering lock and through suspension travel. That is especially important on staggered 19- and 20-inch setups, where front and rear sizes are intentionally different and should not be assumed interchangeable.
What should I inspect before driving a 2019 BMW 640i xDrive Gran Coupe on new tires?
Inspect the wheel diameter, tire size, inflation pressure, and front-to-rear placement before road use. It also helps to look over each tire for shipping damage, bead seating issues, cuts, bulges, or any visible irregularity once mounted and inflated.
A short test drive should be followed by another check for air loss, rubbing, or uneven clearance, particularly on staggered applications. Since this BMW can use several different sizes across three wheel diameters, confirming that each tire is mounted in the correct position is just as important as checking the condition of the tire itself.
How often should tires on a 2019 BMW 640i xDrive Gran Coupe be inspected?
Tires on a 2019 BMW 640i xDrive Gran Coupe should be inspected regularly, with pressure and visible condition checked before longer drives and at routine intervals in normal use. Look for uneven wear, cuts, punctures, cracking, bulges, and any sign that one axle is wearing differently than the other.
Regular inspection matters even more on a car that may use wider rear tires than front tires. Staying ahead of wear and pressure changes helps preserve handling balance and can reveal whether alignment, suspension condition, or wheel changes are affecting the tire setup before the problem becomes more expensive or harder to correct.
