Suspension Secrets Adjustable Rear Camber Arms - BMW F20 M135I/M140I

Suspension Secrets Adjustable Rear Camber Arms – BMW F20 M135i / M140i

Improve rear-end precision, grip and geometry control with Suspension Secrets Adjustable Rear Camber Arms for the BMW F20 M135i and M140i.

The F20 chassis is engaging and capable, but the standard rear suspension offers limited adjustment and can lack precision when driven close to the limit.

These adjustable rear camber arms give you much greater control over rear wheel alignment, allowing additional negative camber to be introduced and the setup to be tailored around road, fast-road or track use.

The result is a more controlled rear axle with improved cornering performance, clearer feedback and better traction when accelerating out of bends.

Why Upgrade to Adjustable Rear Camber Arms?

Rear camber plays a major role in how effectively the tyre maintains contact with the road during cornering.

The Suspension Secrets arms allow the rear camber setting to be adjusted far more precisely than with the factory arrangement.

Potential benefits include:

• Increased negative rear camber
• Improved cornering ability
• More consistent rear-end grip
• Clearer feedback at the limit
• Improved corner-exit traction
• Greater geometry adjustment
• Reduced rear tyre wear when correctly set up
• Suitable for road and track use

Key Features

• Designed for BMW F20 M135i and M140i
• Fully adjustable rear camber arms
• Allows increased negative camber
• Helps improve rear tyre contact during cornering
• Improves rear-end feedback
• Can improve corner-exit traction
• Easy in-situ adjustment
• Adjustable using a 17mm spanner
• No wheel removal required for adjustment
• Billet aircraft-grade 6082 T6 aluminium construction
• Corrosion-resistant stainless steel componentry
• Motorsport-spec Fluro bearings
• Designed and manufactured in the UK

Increased Negative Camber

Adding negative camber helps the outside rear tyre maintain a more favourable contact patch as the car rolls through a corner.

This becomes increasingly important as:

• Cornering speed increases
• Tyre grip increases
• Ride height is reduced
• Track use becomes more frequent

Greater camber adjustment allows the rear axle to be set up around the demands of the car rather than being limited by the factory adjustment range.

Improved Cornering Grip

With the correct camber setting, the rear tyres can work more effectively during loaded cornering.

This can result in:

• Improved mid-corner grip
• Greater rear-end confidence
• Better balance
• More predictable handling

Clearer Rear-Axle Feedback

A properly configured rear geometry setup can make it easier to understand how much grip is available from the rear tyres.

This can provide clearer feedback as the car approaches the limit, which is particularly useful for fast-road and track driving.

Improved Corner-Exit Traction

Rear camber also influences how effectively the tyre can put power down when leaving a corner.

Optimising the alignment can help improve the transition from cornering load into acceleration.

Potential benefits include:

• Better traction
• More predictable power delivery
• Reduced rear-end instability
• Improved confidence on corner exit

Full Rear Camber Control

The adjustable design gives you much greater freedom when configuring rear geometry.

This allows settings to be tailored around:

• Road use
• Fast-road driving
• Trackdays
• Semi-slick tyres
• Lowered ride heights
• Driver preference

Easy Adjustment

One of the major advantages of the Suspension Secrets design is ease of setup.

The rear camber arms can be adjusted using a 17mm spanner.

There is no need to remove the wheels to make changes, making them particularly useful for:

• Workshop alignment
• Trackside setup
• Geometry testing
• Setup refinement

Reduced Rear Tyre Wear

Excessive or incorrect camber can accelerate tyre wear.

The extra adjustment range allows the alignment to be set more accurately, which can help improve tyre wear when the geometry is configured correctly for the vehicle's intended use.

For road cars, this can be particularly useful after lowering.

Ideal for Lowered Cars

Lowering an F20 changes the rear suspension geometry.

Adjustable camber arms allow these changes to be corrected or intentionally tuned.

They work particularly well with:

• Lowering springs
• Height-adjustable spring kits
• Coilovers
• Performance geometry setups

Road & Track Applications

The adjustable rear camber arms are suitable for:

• Daily-driven performance cars
• Fast-road builds
• Clubsport setups
• Trackday cars
• High-grip tyre configurations

6082 T6 Aluminium Construction

Suspension Secrets manufactures its suspension components using billet aircraft-grade 6082 T6 aluminium.

This provides a strong, lightweight structure suitable for demanding suspension applications.

Stainless Steel Components

Corrosion-resistant stainless steel is used throughout the associated componentry to improve durability in an exposed suspension environment.

Motorsport-Spec Fluro Bearings

The arms use motorsport-spec Fluro bearings for precise articulation and long-term performance.

These help reduce unwanted compliance compared with conventional rubber-mounted suspension components.

Works Well With Other Geometry Upgrades

Adjustable rear camber arms pair particularly well with:

• Adjustable rear toe arms
• Adjustable rear traction arms
• Adjustable rear upper third links
• Solid rear control arm bushes
• Coilovers
• Performance geometry setups

Together, these upgrades provide much greater control over rear suspension kinematics.

Professional Installation Recommended

Professional installation is recommended.

After fitting, the car should receive:

• Suspension inspection
• Rear camber adjustment
• Rear toe adjustment
• Full wheel alignment
• Fastener checks

Geometry Setup Essential

A professional geometry setup is strongly recommended after installation.

The ideal camber setting will depend on:

• Tyre choice
• Ride height
• Road or track use
• Driving style
• Desired handling balance

Vehicle Fitment

BMW 1 Series F20

Compatible models:

• BMW M135i F20
• BMW M140i F20

What's Included?

Each kit includes:

• 1 pair Suspension Secrets Adjustable Rear Camber Arms

Explore More BMW F20 Suspension

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