The 2017 BMW 320i sits within the F30 3 Series lineup, a car known for balancing compact luxury, everyday drivability, and the rear-drive feel that made the nameplate so important to sport-sedan buyers. Tire choice on this model is tied closely to wheel setup, because the 320i uses 225/50R17 or 225/45R18 in standard fitment and adds a 255/40R18 rear size on staggered 18-inch applications. All of these are radial sizes, so the decision centers on matching the exact wheel arrangement, then choosing among available performance-oriented blackwall tire lines. For the best result, verify whether the car is running 17-inch square, 18-inch square, or staggered 18-inch wheels before selecting tires.
Which Tire Size Is Right for The 2017 BMW 320i
The 2017 BMW 320i uses three primary tire sizes, and the right one depends on the exact wheel and axle setup. Fitment varies between 17-inch and 18-inch wheels, and the 18-inch arrangement can also be staggered with a wider rear tire. Before choosing a tire, confirm whether the car has the 225/50R17 setup, the 225/45R18 setup, or the 225/45R18 front and 255/40R18 rear combination.
A 225/45R18 tire is a metric radial size with a 225-millimeter nominal section width, a 45-series aspect ratio, and fitment for an 18-inch wheel. On the 2017 BMW 320i, this size is used on 18-inch applications and also serves as the front size in the staggered setup. Available choices center on blackwall radial performance tires from BFGoodrich and Nitto, including g-Force Comp 2 AS, g-Force Sport Comp 2, Nitto NT555 G2, and g-Force Phenom T/A. This is the size to evaluate when the car carries 18-inch front wheels and the owner wants to preserve the intended 18-inch fitment layout.
A 225/50R17 tire uses the same 225-millimeter nominal width but a taller 50-series profile on a 17-inch rim. For the 2017 BMW 320i, this size corresponds to the 17-inch wheel setup rather than the 18-inch arrangement. Product choices include blackwall radial options from BFGoodrich and Nitto, with series such as g-Force Comp 2 AS, g-Force Sport Comp 2, and Nitto NT555 G2. This size is the right path when the car retains 17-inch wheels and the goal is to stay with the proper rim diameter instead of substituting an 18-inch tire size.
A 255/40R18 tire is a wider metric radial size with a 255-millimeter nominal section width, a 40-series profile, and an 18-inch rim diameter. On the 2017 BMW 320i, this size appears as the rear tire in the staggered 18-inch arrangement, so it should not be treated as a universal four-corner fitment. Available blackwall radial choices include BFGoodrich g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A. This is the rear size to confirm when the car uses a wider back wheel package and you want to keep the staggered front-to-rear balance intact.
Sub-model fitment matters on the 2017 BMW 320i because the covered configurations do not all use the same tire arrangement. Some use a square setup, while the front and rear staggered 18-inch positions use different sizes, so identifying the exact configuration is the first step.
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2017 BMW 320i Base
The 2017 BMW 320i Base uses either 225/50R17 or 225/45R18, depending on which wheel package is on the car. Tire selection starts with confirming the actual rim diameter, then comparing available blackwall radial performance tires within that exact size.
The 2017 BMW 320i Base Front uses 225/45R18 as the front fitment in the staggered 18-inch setup. That means the front tire should be chosen as part of a matched staggered arrangement, with attention to the correct 18-inch wheel and the corresponding rear size.
The 2017 BMW 320i Base Rear uses 255/40R18 on the rear axle in the staggered 18-inch configuration. This wider rear fitment should be selected with the matching front setup in mind, rather than treating it like a square-size replacement across all four wheels.
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 2017 BMW 320i Tires for Sale
Available 2017 BMW 320i tire choices focus on blackwall radial performance tires in 225/50R17, 225/45R18, and 255/40R18. BFGoodrich and Nitto options span several series, including g-Force Comp 2 AS, g-Force Sport Comp 2, NT555 G2, and g-Force Phenom T/A, with rim-width compatibility varying by size.
These 2017 BMW 320i tire FAQs focus on exact size identification, 17-inch versus 18-inch wheel fitment, staggered front and rear setups, available tire lines, and the checks that matter before road use.
Tire Size & Fitment
What tire size fits a 2017 BMW 320i?
The 2017 BMW 320i uses 225/50R17, 225/45R18, and 255/40R18 depending on the wheel and axle configuration. The 17-inch setup uses 225/50R17, while 18-inch applications use 225/45R18, and the staggered 18-inch arrangement adds 255/40R18 on the rear.
That means the first step is confirming what is actually on the car now rather than choosing by model name alone. Check the wheel diameter, then verify whether the car uses the same size at all four corners or a wider rear tire before selecting replacements.
What size rim does a 2017 BMW 320i use?
The 2017 BMW 320i uses either 17-inch or 18-inch rims, depending on the tire size and configuration. A 225/50R17 tire fits the 17-inch setup, while 225/45R18 and 255/40R18 are both 18-inch tire sizes.
Rim diameter is the most important fitment check because a 17-inch tire cannot be mounted on an 18-inch wheel, and the reverse is also true. On 18-inch cars, it also helps to confirm whether the wheel setup is square or staggered before ordering front and rear tires.
Why does the 2017 BMW 320i have more than one tire size?
More than one tire size appears on the 2017 BMW 320i because the car was fitted with different wheel packages. One setup uses 225/50R17, another uses 225/45R18, and the staggered 18-inch arrangement uses 225/45R18 in front with 255/40R18 in the rear.
That variation means tire selection is tied to the actual wheel arrangement, not simply the year and model. Looking at the current tire sidewall, measuring wheel diameter, and confirming whether the rear wheels are wider will prevent ordering a square setup for a staggered car.
Choosing the Right Tire
What should I consider when choosing a 2017 BMW 320i tire?
Start with the exact size and wheel layout on the car, because the 2017 BMW 320i can use 225/50R17, 225/45R18, or a staggered 225/45R18 front and 255/40R18 rear combination. All of the available options here are radial tires, so the main decision shifts to the correct fitment and product line.
After size is confirmed, compare tire series, rim-width compatibility, load figures where stated, and how the car is used. A square daily-driver setup may lead to a different choice than an 18-inch staggered car where maintaining the front-to-rear sizing relationship is part of the selection process.
What sidewall styles are available for 2017 BMW 320i tires?
The available 2017 BMW 320i tires in these sizes use a blackwall sidewall style. That applies across the 225/50R17, 225/45R18, and 255/40R18 fitments shown here.
Since sidewall appearance does not vary in this group, the real comparison comes from size, tire series, and wheel compatibility rather than cosmetic treatment. For a modern sport sedan like the 320i, blackwall tires also maintain the restrained, contemporary look most owners expect from this generation.
What brands offer tires for the 2017 BMW 320i?
BFGoodrich and Nitto both offer tires for the 2017 BMW 320i in the applicable sizes. Depending on the exact fitment, available series include BFGoodrich g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and Nitto NT555 G2.
Brand choice should come after the size and wheel arrangement are confirmed. Once that is settled, compare the series available in your exact size, along with rim-width specifications and any stated load information, so the tire matches both the car’s setup and the way it will be driven.
Restoration & Appearance
Which tire should I choose for a period-style 2017 BMW 320i?
A period-style approach on a 2017 BMW 320i starts with keeping the exact tire size and wheel format the car already uses, whether that is 225/50R17, 225/45R18, or the staggered 225/45R18 front and 255/40R18 rear arrangement. All of the available options here are modern blackwall radial tires, which suit the car’s original-era visual character.
Appearance on a car this recent is shaped more by wheel diameter, square versus staggered stance, and sidewall proportion than by vintage-style sidewall treatments. Owners aiming for authenticity should also compare the current wheel package to original vehicle paperwork or marque-specific references before changing sizes.
Does correct tire fitment matter for a 2017 BMW 320i restoration?
Correct tire fitment matters because the 2017 BMW 320i uses more than one legitimate size and wheel arrangement. Choosing the wrong diameter or ignoring a staggered setup can change the car’s stance and leave the finished result looking inconsistent with the way that configuration was equipped.
A careful restoration-minded selection keeps the proper 17-inch or 18-inch fitment and preserves the front-to-rear relationship when a wider rear tire is part of the package. Matching the tire to the actual wheel set is usually more important here than chasing cosmetic variation, since the available sidewall treatment is blackwall throughout.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2017 BMW 320i?
Yes. Modifications such as aftermarket wheels, suspension changes, spacers, or ride-height adjustments can affect tire fitment on a 2017 BMW 320i even when the tire size itself matches a known application. That matters especially on 18-inch cars and on staggered setups where front and rear widths already differ.
A modified car should be checked for wheel width, offset, and clearance at full steering lock and suspension travel before new tires are chosen. Verifying the actual setup on the vehicle is the best way to avoid rubbing, mismatch between front and rear positions, or ordering the wrong size for the wheel.
What should I inspect before driving a 2017 BMW 320i on new tires?
Before driving a 2017 BMW 320i on new tires, inspect the wheel size, tire size at each corner, air pressure, and the overall condition of the wheels. It also helps to confirm that a staggered car has the correct front and rear tires installed in the proper positions.
A short recheck after initial road use is worthwhile, especially if the car has 18-inch wheels or any non-stock hardware. Looking over sidewall condition, bead seating, valve stems, and clearance around struts, fenders, and inner liners can catch fitment problems before they become larger issues.
What should I check before a longer drive in a 2017 BMW 320i?
Before a longer drive, confirm that the 2017 BMW 320i is wearing the correct tire sizes for its wheel package and that pressures are set consistently across the axle pair. Check for cuts, bulges, irregular wear, and any sign of slow air loss, especially if the car has seen limited recent use.
Longer trips also make it worthwhile to inspect tread depth across the full face of each tire and look for signs of alignment or suspension issues. On staggered 18-inch cars, make sure the wider rear tires remain matched side to side so the car maintains predictable road manners over distance.
