G20 BMW M340i Wheel Fitment Guide
One of the first steps to taking your G20 M340i to the next level of performance is upgraded aftermarket wheels and tires. There are a ton of resources online that cover wheel fitments, and sifting through all of it can be intimidating. In this fitment guide we’ll cover our research and development data and countless test fit sessions to help you find the perfect set of G20 BMW M340i wheels.
This M340i fitment guide covers a wide range of fitments from OEM+ to more aggressive setups. As car enthusiasts ourselves, we place a great deal of attention on the minor details and understand that every vehicle presents unique needs. All of our M340i wheels are designed and engineered to clear the factory brakes, and in some cases, aftermarket brakes.
Keep in mind that the RWD and xDrive M340i’s come with slightly different OEM fitments, however the chassis is identical. This means that our fitment suggestions below can be applied to both models from 2018-2025.
That said, it’s important to note that although it is viable to run a staggered setup on the xDrive M340i, you do need to stay within the proper variances in regard to tire sizes. If you’re not sure about which tires to use, get in touch with us and we’ll help you choose the proper tire size.
Track Performance
The G20 M340i’s track prowess is a testament to BMW’s racing heritage. When choosing wheels for track use, several factors come into play. Lightweight construction is crucial, as it reduces unsprung mass, improving handling and acceleration. Our track-oriented wheel options for the M340i are engineered with this in mind, utilizing advanced Flow Forged construction techniques to achieve optimal strength-to-weight ratios.
Increased wheel width can also enhance track performance by allowing for wider tires, which in turn improves grip and cornering stability. However, it’s essential to balance this with proper fitment to avoid rubbing issues, especially under heavy cornering loads experienced on the track.
Historical Context
The G20 M340i represents a significant evolution in the 3 Series lineage. Launched in 2019, it builds upon the success of its predecessors while incorporating modern performance technologies. The G20 platform was developed with a focus on reducing weight and improving rigidity compared to the outgoing F30 generation. This chassis improvement directly translates to better wheel and tire performance, allowing for more aggressive fitments without compromising ride quality or handling characteristics.
BMW’s decision to equip the M340i with the potent B58 engine also influenced wheel design considerations. The increased power output necessitated wheels capable of handling higher torque loads, especially for those enthusiasts looking to extract even more performance through tuning.
While the G20 M340i isn’t a full-fledged M car, it bridges the gap between the standard 3 Series and the M3, offering a compelling package for both street and track use. This positioning is reflected in our wheel offerings, which cater to a wide range of driving styles and performance goals.
OEM G20 BMW M340i Wheel & Tire Fitment
| Specification | Wheel Size & Offset (Front) | Wheel Size & Offset (Rear) | Bolt Pattern | Bore | Tire Size (Front) | Tire Size (Rear) |
|---|---|---|---|---|---|---|
| Square | 17×7.5 +30 | 17×7.5 +30 | 5×112 | 66.6mm | 225/50R17 | 225/50R17 |
| Square | 18×7.5 +25 | 18×7.5 +25 | 5×112 | 66.6mm | 225/45R18 | 225/45R18 |
| Staggered | 18×7.5 +25 | 18×8.5 +40 | 5×112 | 66.6mm | 225/45R18 | 255/40R18 |
| Staggered | 19×8 +27 | 19×8.5 +40 | 5×112 | 66.6mm | 225/40R19 | 255/35R19 |
| Staggered | 20×8 +27 | 20×8.5 +40 | 5×112 | 66.6mm | 225/35R20 | 255/30R20 |
| Specification | Square | Square | Staggered | Staggered | Staggered |
|---|---|---|---|---|---|
| Wheel Size & Offset (Front) | 17×7.5 +30 | 18×7.5 +25 | 18×7.5 +25 | 19×8 +27 | 20×8 +27 |
| Wheel Size & Offset (Rear) | 17×7.5 +30 | 18×7.5 +25 | 18×8.5 +40 | 19×8.5 +40 | 20×8.5 +40 |
| Bolt Pattern | 5×112 | 5×112 | 5×112 | 5×112 | 5×112 |
| Bore | 66.6mm | 66.6mm | 66.6mm | 66.6mm | 66.6mm |
| Tire Size (Front) | 225/50R17 | 225/45R18 | 225/45R18 | 225/40R19 | 225/35R20 |
| Tire Size (Rear) | 225/50R17 | 225/45R18 | 255/40R18 | 255/35R19 | 255/30R20 |
Available G20 BMW M340i Wheels
18" Fitments
Upgrading to 18″ M340i wheels offer a good balance between performance and aesthetics. This size fill the wheel wells nicely while maintaining ride comfort and improving handling characteristics. The 18″ setup on the M340i is perfect for those looking to keep an OEM+ look while still improving performance.
Square
Staggered
19" Fitments
Upgrading to 19″ M340i wheels offer an ideal combination of aesthetics and performance. This size fills the wheel wells perfectly while still maintaining a decent ride quality, but with a big boost in performance depending on the wheel’s width and tire size. The 19″ setup on the M340i is perfect for this looking to achieve an aggressive stance and improved performance.
Square
| Wheel Name | Suggested Wheel Size (Front) | Suggested Wheel Size (Rear) | Suggested Tire Size (Front) | Suggested Tire Size (Rear) |
|---|---|---|---|---|
| CFF46 | 19×8.5 +35 | 19×8.5 +35 | 245/35 | 245/35 |
| CFF46 | 19×9 +28 | 19×9 +28 | 255/35 | 255/35 |
| CFF70 | 19×8.5 +35 | 19×8.5 +35 | 245/35 | 245/35 |
| CFF70 | 19×9 +28 | 19×9 +28 | 255/35 | 255/35 |
| CFF72 | 19×8.5 +35 | 19×8.5 +35 | 245/35 | 245/35 |
| CFF72 | 19×9 +28 | 19×9 +28 | 255/35 | 255/35 |
| CFF75 | 19×8.5 +30 | 19×8.5 +30 | 245/35 | 245/35 |
| CFF75 | 19×9 +28 | 19×9 +28 | 255/35 | 255/35 |
| CFF300 | 19×8.5 +32 | 19×8.5 +32 | 245/35 | 245/35 |
| CFF300 | 19×9 +30 | 19×9 +30 | 255/35 | 255/35 |
| Wheel Name | CFF46 | CFF46 | CFF70 | CFF70 | CFF72 | CFF72 | CFF75 | CFF75 | CFF300 | CFF300 |
|---|---|---|---|---|---|---|---|---|---|---|
| Suggested Wheel Size (Front) | 19×8.5 +35 | 19×9 +28 | 19×8.5 +35 | 19×9 +28 | 19×8.5 +35 | 19×9 +28 | 19×8.5 +35 | 19×9 +28 | 19×8.5 +32 | 19×9 +30 |
| Suggested Wheel Size (Rear) | 19×8.5 +35 | 19×9 +28 | 19×8.5 +35 | 19×9 +28 | 19×8.5 +35 | 19×9 +28 | 19×8.5 +35 | 19×9 +28 | 19×8.5 +32 | 19×9 +30 |
| Suggested Tire Size (Front) | 245/35 | 255/35 | 245/35 | 255/35 | 245/35 | 255/35 | 245/35 | 255/35 | 245/35 | 255/35 |
| Suggested Tire Size (Rear) | 245/35 | 255/35 | 245/35 | 255/35 | 245/35 | 255/35 | 245/35 | 255/35 | 245/35 | 255/35 |
Staggered
| Wheel Name | Suggested Wheel Size (Front) | Suggested Wheel Size (Rear) | Suggested Tire Size (Front) | Suggested Tire Size (Rear) |
|---|---|---|---|---|
| CFF46 | 19×9 +28 | 19×9.5 +40 | 255/35 | 275/35 |
| CFF46 | 19×9 +28 | 19×10 +28 | 255/35 | 285/30 |
| CFF70 | 19×9 +28 | 19×10 +28 | 255/35 | 285/30 |
| CFF70 | 19×9 +28 | 19×10 +35 | 255/35 | 285/30 |
| CFF72 | 19×9 +28 | 19×10 +38 | 255/35 | 285/30 |
| CFF75 | 19×9 +28 | 19×10 +35 | 255/35 | 285/30 |
| CFF300 | 19×8.5 +32 | 19×9.5 +38 | 245/35 | 275/30 |
| CFF300 | 19×8.5 +32 | 19×10 +38 | 245/35 | 285/30 |
| Wheel Name | CFF46 | CFF46 | CFF70 | CFF70 | CFF72 | CFF75 | CFF300 | CFF300 |
|---|---|---|---|---|---|---|---|---|
| Suggested Wheel Size (Front) | 19×9 +28 | 19×9 +28 | 19×9 +28 | 19×9 +28 | 19×9 +28 | 19×9 +28 | 19×8.5 +32 | 19×8.5 +32 |
| Suggested Wheel Size (Rear) | 19×9.5 +40 | 19×10 +28 | 19×10 +28 | 19×10 +35 | 19×10 +38 | 19×10 +35 | 19×9.5 +38 | 19×10 +38 |
| Suggested Tire Size (Front) | 255/35 | 255/35 | 255/35 | 255/35 | 255/35 | 255/35 | 245/35 | 245/35 |
| Suggested Tire Size (Rear) | 275/35 | 285/30 | 285/30 | 285/30 | 285/30 | 285/30 | 275/30 | 285/30 |
20" Fitments
Upgrading to 20″ M340i wheels offer stunning aesthetics, however they will have some minor performance drawbacks. If form is more important than function, then this size is perfect for achieving that. The 20″ setup on the M340i is perfect for those looking to fill the fender gap without modifying the vehicle’s suspension.
Square
| Wheel Name | Suggested Wheel Size (Front) | Suggested Wheel Size (Rear) | Suggested Tire Size (Front) | Suggested Tire Size (Rear) |
|---|---|---|---|---|
| CFF25 | 20×8.5 +35 | 20×8.5 +35 | 255/30 | 255/30 |
| CFF25 | 20×9 +35 | 20×9 +35 | 265/30 | 265/30 |
| CFF46 | 20×9 +35 | 20×9 +35 | 265/30 | 265/30 |
| CFF70 | 20×8.5 +35 | 20×8.5 +35 | 255/30 | 255/30 |
| CFF75 | 20×8.5 +32 | 20×8.5 +32 | 255/30 | 255/30 |
| CFF300 | 20×8.5 +30 | 20×8.5 +30 | 255/30 | 255/30 |
| Wheel Name | CFF25 | CFF25 | CFF46 | CFF70 | CFF75 | CFF300 |
|---|---|---|---|---|---|---|
| Suggested Wheel Size (Front) | 20×8.5 +35 | 20×9 +35 | 20×9 +35 | 20×8.5 +35 | 20×8.5 +32 | 20×8.5 +30 |
| Suggested Wheel Size (Rear) | 20×8.5 +35 | 20×9 +35 | 20×9 +35 | 20×8.5 +35 | 20×8.5 +32 | 20×8.5 +30 |
| Suggested Tire Size (Front) | 255/30 | 265/30 | 265/30 | 255/30 | 255/30 | 255/30 |
| Suggested Tire Size (Rear) | 255/30 | 265/30 | 265/30 | 255/30 | 255/30 | 255/30 |
Staggered
Additional Information
When selecting wheels for your BMW M340i, several crucial factors should be considered to ensure optimal performance, safety, and aesthetics.
Brake Clearance
Brake clearance is a critical aspect of wheel fitment. Most Curva Concepts wheels are engineered to ensure OEM brake clearance, allowing for seamless installation without compromising braking performance. However, it’s important to note that aftermarket big brake kits (BBK) may affect fitment and clearance. If you’ve upgraded your braking system, consult with our fitment experts to ensure compatibility.
Suspension Considerations
Suspension modifications can significantly impact wheel clearance and fitment. Certain aftermarket suspensions, such as Height Adjustable Springs (HAS) kits and some non-linear coilovers, may reduce clearance and cause fitment issues. It’s crucial to consider your current or planned suspension setup when selecting wheels to avoid any potential conflicts.
Quality and Durability
Curva Concepts wheels undergo rigorous independent testing processes to ensure the highest standards of quality and safety. Our wheels are JWL and VIA certified, guaranteeing their structural integrity and performance capabilities. The strength and lightweight design of our wheels contribute to overall vehicle performance and efficiency, enhancing both the driving experience and fuel economy of your M340i.
Warranty and Support
We stand behind the quality of our products with comprehensive warranty options and an accidental damage replacement policy. Our dedicated customer support team is always ready to assist you with any questions or concerns regarding your wheel purchase. For detailed information on our warranty and support services, please visit our warranty page.
WHICH BMW M340i FITMENT IS RIGHT FOR ME?
Get in touch with our fitment experts to see which diameter, width and offset is right for you and your M340i
