2016 BMW 640i xDrive Tires

The 2016 BMW 640i xDrive uses several primary tire sizes: 245/45R18, 245/40R19, 245/35R20, 275/35R19, and 275/30R20. The 245-width sizes are used as square-fitment or front-position sizes, while the 275-width sizes are used at the rear in staggered setups.

The correct choice depends on the actual wheels on the car, not just the model name. An 18-inch square setup, a 19-inch square setup, a 19-inch staggered setup, and a 20-inch staggered setup all point to different tire needs, so confirm wheel diameter and front-versus-rear fitment before selecting tires.

The 2016 BMW 640i xDrive appears with 18-inch, 19-inch, and 20-inch rim diameters depending on the tire size and wheel arrangement. Sizes 245/45R18 use 18-inch rims, 245/40R19 and 275/35R19 use 19-inch rims, and 245/35R20 with 275/30R20 use 20-inch rims.

That rim difference matters because tire size selection starts with the wheel diameter already on the car. A 19-inch tire cannot be mounted on an 18-inch or 20-inch rim, so the quickest way to narrow the fitment is to verify the wheel size first, then confirm whether the car uses the same size all around or a staggered front and rear combination.

This model uses more than one tire size because it appears with different wheel diameters and with both square and staggered fitment layouts. Square setups use the same width at all four corners, while staggered setups use a narrower front size and a wider rear size.

That means two cars with the same year, make, and model may not use the same tires. The practical step is to identify whether the car has 18-inch, 19-inch, or 20-inch wheels and whether the front and rear tire sizes match, since that determines which of the five primary sizes belongs on the vehicle.

Start with the exact tire size and wheel layout already on the car. The 2016 BMW 640i xDrive uses multiple modern metric radial sizes, so the first decision is whether the car has a square setup or a staggered front and rear arrangement, followed by the correct 18-inch, 19-inch, or 20-inch rim diameter.

After that, compare the available tire series, rim-width compatibility, and load-capacity figures where they are stated. A buyer choosing between BFGoodrich and Nitto options should also consider whether the car is used mainly for daily driving, seasonal fair-weather use, or a more performance-focused role, since that helps narrow the most appropriate tire character.

Tires for the 2016 BMW 640i xDrive are available from BFGoodrich and Nitto in the applicable sizes on this page. BFGoodrich covers several of the front, square, and rear sizes through multiple g-Force series, while Nitto appears in selected 18-inch, 19-inch, and 20-inch sizes through the NT555 G2 line.

The practical difference is not simply brand name, but which sizes and series are offered within your exact wheel setup. Some sizes have several BFGoodrich choices, some include both BFGoodrich and Nitto, and one rear 20-inch size is limited to a single series, so the best comparison starts only after the exact size is confirmed.

The available tire series for the 2016 BMW 640i xDrive include BFGoodrich g-Force Sport Comp 2, BFGoodrich g-Force Comp 2 AS, BFGoodrich g-Force Phenom T/A, and Nitto NT555 G2. Availability depends on the exact size, so not every series appears in every fitment used on this model.

That matters because the tire series often becomes the real buying decision once the size is settled. A square 18-inch setup offers a different comparison set than a staggered 20-inch arrangement, so review the tire series only within the exact front or rear size the car requires rather than assuming every series spans the full fitment range.

Correct tire fitment still matters on a 2016 BMW 640i xDrive even though it is a modern performance-touring car rather than a vintage restoration subject. The right size preserves the intended relationship between wheel diameter, tire profile, and the car's front-to-rear stance, especially on staggered 19-inch and 20-inch setups.

Appearance and proportion can change noticeably when the wrong profile or width is installed. Anyone preserving the car's original look should match the wheel arrangement already on the vehicle, then choose from the available blackwall radial series in that size rather than mixing unrelated sizes that alter the car's visual balance.

A period-appropriate look on a 2016 BMW 640i xDrive starts with staying in the correct modern metric radial size for the car's actual wheel setup. All of the applicable products here use a blackwall sidewall, which suits the clean, contemporary presentation expected on a late-model BMW grand touring coupe or convertible.

The best visual result usually comes from matching the original wheel diameter and, if applicable, preserving the staggered front and rear relationship. Buyers concerned with exact as-delivered appearance should compare the existing wheel package on the car with marque-specific references, then choose a tire series that keeps the proportions and sidewall presentation consistent.

Yes, modifications can affect tire fitment on a 2016 BMW 640i xDrive. Changes such as aftermarket wheels, altered wheel widths, different offsets, lowered suspension, or body modifications can change the space available for the tire even when the nominal size still looks close to one of the original fitments.

That is especially important on a car with low-profile 19-inch and 20-inch tire options and staggered front-rear combinations. Any owner working with a modified car should confirm wheel diameter, width, and clearance at both axles before selecting tires, rather than assuming a stock-size reference will behave the same on a changed setup.

Before driving a 2016 BMW 640i xDrive on new tires, check that the front and rear sizes are installed in the correct positions, that inflation pressures are set properly, and that there is no interference at full steering lock or through normal suspension movement. Wheel condition and valve-stem condition are worth checking at the same time.

A short test drive should confirm smooth operation without vibration, rubbing, or pulling. It also helps to recheck pressure after the first few drives and look over the sidewalls for any signs of contact, since a low-profile fitment can reveal clearance problems quickly if the wrong size or wheel specification was chosen.

Before a longer drive, inspect tread condition, air pressure, and any signs of irregular wear on all four tires. On a 2016 BMW 640i xDrive with staggered sizing, make sure the front and rear tires are the correct matched sizes for the wheel package and that none show cuts, bulges, or visible damage.

Longer highway use puts more emphasis on consistent inflation and overall tire condition than a short local outing. It is also smart to confirm that the car has not developed vibration, slow air loss, or edge wear since the last inspection, especially if the vehicle is driven infrequently or has recently had wheel, alignment, or suspension work.