The 2017 BMW M240i sits in the modern BMW tradition of compact rear-wheel-drive performance, blending everyday usability with the sharper character enthusiasts expect from the M Performance line. Whether in Coupe or Convertible form, tire fitment is tied closely to that balance of grip, response, and stance. This model uses 18-inch radial tires, with a staggered setup built around 225/40R18 at the front and 245/35R18 at the rear. Available choices stay focused on modern blackwall performance radials from BFGoodrich and Nitto across several g-Force and NT555 series options. The key is confirming position-specific fitment first, then choosing the tire that best suits road use, wheel specs, and the look you want to maintain.
Which Tire Size Is Right for The 2017 BMW M240i
The 2017 BMW M240i uses two primary tire sizes, both in radial construction on 18-inch rims. The important first step is identifying whether you are buying for the front or rear of the car, since the M240i uses a staggered setup with different sizes at each end on both Coupe and Convertible applications.
Fit(s): Convertible, Convertible Front, Coupe, and Coupe Front
Construction: Radial|Rim: 18 in
A 225/40R18 tire uses a 225-millimeter nominal section width, a 40-series profile, radial construction, and an 18-inch rim. On the 2017 BMW M240i, this size serves the front position and helps preserve the steering balance intended for the car's staggered setup. Available choices 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 front-end response, wheel-width compatibility, and matching the car's position-specific fitment are the main concerns.
A 245/35R18 tire uses a 245-millimeter nominal section width, a 35-series profile, radial construction, and an 18-inch rim. On the 2017 BMW M240i, this size is used at the rear, where the wider section supports the car's staggered front-to-rear fitment. The available product choice here is a blackwall BFGoodrich g-Force Phenom T/A, keeping the selection focused rather than broad. This size matters when replacing rear tires correctly, especially on a car where maintaining the intended front and rear sizing relationship is part of proper fitment.
Sub-model fitment on the 2017 BMW M240i stays consistent in overall layout, but tire selection still depends on position. Both Coupe and Convertible applications use the same staggered 18-inch radial setup, so the real distinction is choosing the correct front or rear size before comparing tire options.
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2017 BMW M240i Convertible
The 2017 BMW M240i Convertible follows the same staggered tire arrangement used across the model line, with separate front and rear sizing rather than a single all-around fitment. Tire selection starts with confirming which axle you are replacing, then comparing blackwall radial choices that suit the car's wheel specifications and intended road use.
The 2017 BMW M240i Convertible Front uses the front-position tire size in the staggered 18-inch radial setup. That makes this the place to compare the broader range of 225/40R18 options, paying close attention to rim-width compatibility and whether you want an all-season or more performance-oriented series.
The 2017 BMW M240i Convertible Rear uses the wider rear tire in the staggered setup, so replacement should stay focused on the correct rear size rather than treating the car as a square fitment. Choosing for this position means confirming wheel width and preserving the front-to-rear sizing relationship built into the vehicle.
The 2017 BMW M240i Coupe uses the same staggered 18-inch radial layout as the Convertible, with different sizes at the front and rear. Tire selection is most straightforward once the axle is confirmed, since the decision then becomes comparing the available blackwall performance radial options for the correct position.
The 2017 BMW M240i Coupe Front uses the front tire size in the car's staggered arrangement. This position offers the widest product choice, so it is worth comparing tire series, brand options, and rim-width specifications rather than selecting by size alone.
The 2017 BMW M240i Coupe Rear uses the wider rear tire size on an 18-inch radial fitment. Rear replacement should keep that position-specific sizing intact, with attention to wheel compatibility and maintaining the intended staggered relationship between front and rear tires.
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 M240i Tires for Sale
Available 2017 BMW M240i tire choices focus on blackwall radial performance tires in 18-inch front and rear sizes. BFGoodrich and Nitto are represented, with several g-Force series and the NT555 G2 giving buyers useful differences in series character and rim-width compatibility.
Owners shopping tires for a 2017 BMW M240i usually need to confirm front versus rear sizing first, then sort through radial choices, rim fitment, and product differences. These FAQs focus on the staggered 18-inch setup, selection factors, and practical checks before road use.
Tire Size & Fitment
What tire size fits a 2017 BMW M240i?
The 2017 BMW M240i uses a staggered 18-inch radial tire setup with 225/40R18 at the front and 245/35R18 at the rear. That means it does not use the same tire size at all four corners when equipped in this configuration.
The important next step is confirming whether you are replacing front tires, rear tires, or the full set. Matching the correct size to the correct axle helps preserve the intended fitment relationship, and it also gives you a more accurate way to compare wheel-width requirements, tire series, and available product choices.
What size rim does a 2017 BMW M240i use?
The tire fitment for the 2017 BMW M240i uses an 18-inch rim diameter at both the front and rear. Even though the tire widths and profiles differ between axles, both primary sizes are built for 18-inch wheels.
Rim diameter is only one part of the fitment picture, so it is still important to confirm the actual wheel setup on the car before choosing tires. A modified car may have different wheel widths than stock-style fitment, and that can affect which available 225/40R18 or 245/35R18 tires are most appropriate.
Do all 2017 BMW M240i sub-models use the same tire size?
The 2017 BMW M240i Coupe and Convertible share the same overall staggered layout, using 225/40R18 at the front and 245/35R18 at the rear. The fitment difference is by axle position rather than by Coupe-versus-Convertible sizing.
That makes sub-model identification less complicated than on vehicles with multiple wheel packages, but position still matters. A buyer standing at the car should confirm whether the tires being replaced are front or rear, then verify the existing wheel width and tire size before selecting among the available radial options.
Choosing the Right Tire
What should I consider when choosing a 225/40R18 or 245/35R18 tire for a 2017 BMW M240i?
Start with the correct axle position, since the 2017 BMW M240i uses 225/40R18 in front and 245/35R18 in the rear. From there, compare radial construction details such as tire series, brand, blackwall styling, rim-width compatibility, and any stated load figures that matter to your wheel and usage setup.
A front tire choice should not be made the same way as a rear replacement on a staggered car. It helps to confirm whether you want to maintain the current handling balance, replace in matched pairs by axle, or select a product line that keeps the front and rear tires consistent in character.
What sidewall styles are available for 2017 BMW M240i tires?
The available tire choices for the 2017 BMW M240i use a blackwall sidewall style. That keeps the presentation straightforward and in line with the modern performance character of the car's 18-inch radial fitment.
Since sidewall styling does not vary here, the real product differences come from tire series, brand selection, and wheel-width compatibility. That can simplify the buying decision for an M240i owner, because the comparison becomes more about fitment and intended use than about choosing between multiple visual sidewall treatments.
What brands offer tires for the 2017 BMW M240i?
BFGoodrich and Nitto both offer tires in the sizes used on the 2017 BMW M240i. The 225/40R18 front size has the broader selection, while the 245/35R18 rear size is represented by a BFGoodrich g-Force Phenom T/A option.
Brand alone should not be the only deciding factor on a staggered setup. It is worth comparing series names, wheel-width compatibility, and whether you are replacing only one axle or trying to keep a consistent tire family front to rear for a more uniform fitment approach.
Restoration & Appearance
Which tire should I choose for a period-style 2017 BMW M240i?
A period-style approach on a 2017 BMW M240i still begins with the correct staggered radial sizes: 225/40R18 front and 245/35R18 rear. Since the available products are modern blackwall performance radials, the visual direction stays clean and contemporary rather than vintage or retro.
Appearance choice here is less about whitewalls or classic sidewall treatments and more about keeping the correct stance and front-to-rear proportion. Buyers focused on preserving the car's original-era look should avoid changing the staggered relationship casually and should confirm the wheel setup before moving to a different tire series.
Does correct tire fitment matter for a 2017 BMW M240i restoration?
Correct tire fitment matters on a 2017 BMW M240i because the car's look and road stance depend heavily on its staggered 18-inch setup. Using the proper front and rear sizes helps maintain the proportions associated with the model's factory-era presentation.
Restoration-minded owners should treat size, axle position, and wheel compatibility as the starting point before comparing brands or tire series. When originality matters beyond basic fitment, vehicle-specific reference material and marque-focused guidance can help confirm whether the current wheel and tire package matches the car's intended configuration.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2017 BMW M240i?
Yes, modifications can affect tire fitment on a 2017 BMW M240i even when the nominal tire sizes remain 225/40R18 front and 245/35R18 rear. Changes to wheel width, offset, suspension height, alignment, or body clearance can alter how well a tire works within the available space.
A lowered car or one with aftermarket wheels deserves extra checking before new tires are selected. It helps to confirm the actual wheel dimensions on the vehicle, inspect inner and outer clearances, and make sure the staggered setup still has adequate room during steering travel and normal suspension movement.
What should I inspect before driving a 2017 BMW M240i on new tires?
Before driving a 2017 BMW M240i on new tires, inspect that the front and rear sizes are mounted in the correct positions and that each tire matches its wheel properly. Tire pressure, bead seating, visible clearance, and the general condition of the wheels should all be checked before regular road use.
It is also smart to look over suspension and steering components, especially on a performance-oriented car with a staggered setup. Uneven wear, rubbing marks, or persistent air loss can point to issues that should be addressed early so the new tires are not compromised by an underlying wheel or chassis problem.
How often should tires on a 2017 BMW M240i be inspected?
Tires on a 2017 BMW M240i should be inspected regularly, not just when tread looks low. A performance-oriented staggered setup benefits from frequent checks for pressure changes, uneven wear, sidewall damage, punctures, and any signs that front or rear tires are wearing differently than expected.
Inspection matters even more if the car is driven seasonally or stored for long periods. A quick routine that includes pressure checks, tread and shoulder wear review, and a look for cuts, bulges, or cracking can help catch problems early before they affect ride quality, handling balance, or safe road use.
