Home » Suspension Secrets Solid Front Control Arm Bushes - BMW F90 M5

Suspension Secrets Solid Front Control Arm Bushes - BMW F90 M5

SKU: SS-SB036
€303,11 incl. VAT

The delivery time for products in stock is 1-3 business days.

If the product is not in stock and it is a pre order product, the average delivery time is 5-21 business days. If the product has a longer delivery time than previously announced, we will be in touch.

Terms for product returns:

  • You must return the ordered products within 14 days of receiving
  • The products must be unused and without damages
  • Commission fee for handling returns is 21,90€
  • For product returns, the customer is in charge of the return costs. Only door to door service (Express)
  • Shipping costs are not refunded

For international orders (outside of Europe) sales are final and non-refundable. Once an order is placed, it cannot be canceled or returned. By placing an order, you acknowledge and agree to these terms.

Return address: QT Parts, Vasarakatu 8B, 37150 Nokia, Finland.

Pre order / made-to-order products

If the product you have ordered is a pre order or made-to-order item, it is not subject to the 14-day right of withdrawal or return under consumer protection laws, as the product is manufactured or sourced specifically based on the customer’s individual order.

If you wish to cancel your order before receiving the product, we will refund 50% of the total order amount.

This condition applies to the following product categories:

  • Suspension
  • Engine Tuning
  • Engine Parts
  • Exhaust Systems
  • Fueling
  • Turbochargers/superchargers
  • Drivetrain
  • ECE-approved Downpipes

All of the above products are manufactured or sourced individually based on the customer’s order, and therefore cannot be returned after delivery, unless the product has a manufacturing or material defect.

In the event of such a defect, the standard liability for defects as provided by consumer protection legislation shall apply.

Improve braking stability and steering accuracy by install the Suspension Secrets Solid Front Control Arm Bush for the BMW F90 M5

The standard BMW front control arm bushes are made from soft rubber. This rubber flexes when driving fast, causing the steering to feel vague at the limit. These rubber bushes also flex when braking hard leading your M5 to feel nervous or unstable.

To solve both of these problems, solid front control arm bushes are required. Our solid bushes are designed as press-fit replacement for the OEM BMW control arm bushes. As our bushes are solid, they eliminate all of the issues caused by soft rubber bushes. Instead you gain improved braking stability and steering accuracy at the limit.

The key benefits of our Suspension Secrets Solid Front Control Arm Bush for the BMW F90 M5 are:

  • Increased braking stability
  • Improved steering feel and accuracy
  • Reduced understeer
  • Increased sense of connection to the road
Suspension Secrets' products are designed and manufactured in the UK. Our products are made from billet aircraft-grade 6082 T6 aluminium and corrosion-resistant 316 stainless steel. Our solid control arm bushes use Lemforder bearings for maximum performance and longevity.

Further Reading

As standard, the OEM rubber bushes used by BMW are quite soft. They are built for refinement, flexibility and durability. Rubber bushes are quiet and are ideal for a car that is designed to be used frequently. 

Unfortunately, when used in a performance application, rubber bushes have quite a few downsides. When braking hard, the OE rubber bushes flex. They flex so much that the wheel assembly moves rearwards as the car brakes. This causes unwanted toe geometry change which causes the car to feel very nervous and vague when braking.

The flex in rubber bushes also causes understeer and the steering wheel to feel very inaccurate during cornering.

Toe

Toe is the angle between each wheel with relation to the longitudinal axis of the vehicle. The animation below illustrates to toe-in, toe-out and zero toe.

There are three types of toe: toe-in, toe-out and zero toe. Each toe setting has a separate purpose and an impact upon directional stability when used on a car. Toe has an effect on three major areas which are: corner entry handling, tyre wear and straight line stability.



Toe-In
On the front axle of a car toe-in creates straight-line stability, albeit at the expense of some initial reluctance from the car at during the corner turn-in phase. Toe-in on the rear axle again improves straight-line stability, but also induces a slight amount of slip angle which helps when putting power to the ground.

Toe-in is more common for fast road use.


Toe-Out
On the front axle of a car toe-out creates instability in a straight-line. At speed, when a wheel with toe-out is turned, the wheel is pulled rearwards which increases the toe-out angle, pulling the wheel even more outwards. This can even pull the car into yaw. Front axle toe-out can make a car twitchy and unpredictable at high speeds.

Toe-out does improve turn-in into corners, and the responsiveness of the front end.

Toe-out on the rear axle can create a slip angle which allows for more traction and acceleration, but with a rear-wheel drive chassis it can also lead to unwanted levels of oversteer.


Front-axle toe-out is more commonly used for track day or racing applications.

Zero Toe
Running zero toe on either the front or rear axles results in minimum tyre wear and power loss. This is because running any level of toe, no matter how small, causes the tyre to scrub in a straight line due to the incurred slip angle, which reduces the rolling efficiency of the tyre.

Zero toe does not improve handling or feedback, nor does it create slip angle - all of which are desirable in performance driving - and as a result either toe-in or toe-out are more commonly chosen depending on use.

Tech Specs.

Suspension Secrets F90 M5 Solid Suspension Bushes are designed and manufactured in the UK. The bushes are CNC-machined from billet 6082 T6 aluminium, and the rubber inserts are sourced from a renowned high-performance OE manufacturer.