BC Racing ER Series - BMW 2 Series F22 M235i (2014+) (5-Bolt Top Mount)
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PLEASE NOTE THE IMAGE IS FOR ILLUSTRATION PURPOSES ONLY IF YOU REQUIRE SPECIFIC NEEDS SUCH AS TOP MOUNTS THEN PLEASE CONTACT US TO CONFIRM BEFORE ORDERING
BC Racing ER Series Coilovers – BMW 2 Series F22 M235i RWD 5-Bolt
The BC Racing ER Series Coilovers for the BMW 2 Series F22 M235i with 5-bolt front top mounts are an advanced, track-focused suspension upgrade designed for drivers looking for greater control over their car's damping characteristics.
The ER Series builds on BC Racing's adjustable coilover platform with independent compression and rebound adjustment, allowing each aspect of the damper's behaviour to be tuned separately. External reservoirs increase damper oil capacity and improve heat dissipation, helping maintain consistent damping performance during prolonged hard driving.
Why choose BC Racing ER Series for your M235i?
The BMW F22 M235i combines rear-wheel drive with strong performance, making precise chassis control particularly important when driving the car hard.
The ER Series is designed for drivers who want significantly more adjustment than the BR or DS Series can provide.
With independent compression and rebound adjustment, the ER Series allows you to make precise changes to how your M235i responds to braking, acceleration, cornering, bumps and kerbs.
The external reservoirs also provide increased oil capacity and improved heat management, making the ER Series particularly well suited to cars that regularly see track use or demanding fast-road driving.
Key Features
- BC Racing ER Series 2-way adjustable coilover suspension
- BMW 2 Series F22 M235i RWD application
- 5-bolt front top mount configuration
- Independent compression adjustment
- Independent rebound adjustment
- External remote reservoirs
- Increased damper oil capacity
- Improved heat dissipation during hard use
- Monotube damper design
- Independently adjustable ride height
- Rebuildable dampers
- Application-specific spring rates
- Custom spring-rate options available
- Track-focused suspension platform
BMW F22 M235i Suspension Upgrade
The BC Racing ER Series provides a highly adjustable suspension platform for M235i owners looking to develop their car's handling beyond a conventional fast-road setup.
The separate compression and rebound adjustments allow the suspension to be tuned around the rest of the vehicle. Changes can be made to suit different tyres, spring rates, alignment settings, road surfaces and circuit conditions.
For a fast-road M235i, the ER Series allows you to carefully balance chassis control and suspension compliance. For a track-focused car, the additional adjustment range provides much greater scope to develop the setup around the driver's preferences and circuit conditions.
After fitting coilovers or making significant ride-height changes, we recommend having the vehicle professionally aligned.
Separate Compression & Rebound Adjustment
The defining feature of the ER Series is its independent damping adjustment.
Compression and rebound can be adjusted separately, allowing you to influence how the suspension behaves when the damper compresses and when it returns to its extended position.
This gives you substantially more control than the combined damping adjustment found on the BR and DS Series.
For experienced drivers and suspension specialists, this additional adjustment range makes it possible to fine-tune the M235i around tyre choice, spring rates, alignment and driving conditions.
External Reservoirs
The ER Series uses external reservoirs to increase damper oil capacity and improve heat dissipation during demanding use.
Greater oil capacity helps manage heat generated within the damper during prolonged hard driving, helping maintain more consistent damping characteristics throughout a track session.
This makes the ER Series particularly suitable for M235i models that regularly see track days or other demanding driving conditions.
5-Bolt Top Mount Compatibility
This BC Racing kit is specifically for the BMW F22 M235i using the 5-bolt front top mount configuration.
The F22 platform uses different suspension configurations across certain models and specifications, so it is important to confirm your vehicle's exact fitment before ordering.
The 5-bolt application is different from 3-bolt F22 applications and the two configurations should not be treated as interchangeable.
If you're unsure whether your M235i uses the 5-bolt front top mount configuration, contact us before ordering and we'll help you identify the correct kit.
Choosing Your Spring Rate
The ER Series can be supplied with different spring-rate configurations depending on the application and intended use.
The ideal spring rate depends on how your M235i is used, its existing modifications, tyre choice and your preferred balance between compliance and handling performance.
For fast-road applications, a more compliant setup may be preferable, while a dedicated track car can benefit from a more aggressive setup developed around its tyres, alignment and chassis modifications.
If you're unsure which spring-rate configuration is best for your M235i, contact us before ordering and we can help you select a suitable setup.
Maintenance and Servicing
The ER Series is a fully rebuildable, high-performance suspension system designed for demanding use.
Regular inspection and appropriate maintenance are important, particularly on cars that see frequent track use. The external reservoirs, damper bodies and adjustment mechanisms should be kept clean and inspected regularly.
Following BC Racing's recommended maintenance and servicing procedures will help maintain consistent damping performance and extend the service life of the suspension.
What's Included?
The BC Racing ER Series is supplied as a complete coilover suspension kit for the BMW F22 M235i 5-bolt application, including the application-specific dampers, springs and adjustable components required for installation.
Please check your vehicle's exact specification and front top-mount configuration before ordering.
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