4 Series (F32)

Testimonial - F32 430d - B4 Suspension - Mr Wilson

21/04/2025

Hello Kevin

I love the suspension. It is great. It has improved the car in every aspect of Driving. The car feel so much more planted and more stable at High speed. It  has transformed the car. Thank you very much for supplying such a great improvement. I do not thank you though, for how much more money I’m about to spend on tires.

All the best,
H. Wilson

Testimonial - F36 440i - B4 Suspension - Mr York

Date: 20/01/25 Hi Kevin Just wanted to say I’m over the moon with the suspension your guys have installed on my F36. It has totally transformed the car - ride quality, steering and braking are all so much better now. Gone is the crashy ride and floaty feeling from the standard suspension and I now have the confidence to push the car and have some fun knowing that it will behave as it should. Thank you and all the best.

Testimonial - F32 440i - Quaife LSD - Mr Chavoos

Date: 14/03/25

Hey james I just got the diff fitted today and man is this thing phenomenal. It literally puts drifting on easy mode I feel like I unlocked a new feature on the car. It's insane! LSD>Tune ! Thanks alot for everything you made the experience as smooth as the LSD's transitions :D

Testimonial - F32 435dx - B4 Sport Suspension - Mr H

Date: 21/05/22

James

Suspension received and installed followed by full 4 wheel alignment.

After 1 month and 1100 miles on the original suspension the car drove exactly as described on you web site. Smooth roads the car was fine. B roads,  suspension was brittle, bumpy, nervous in corners and managed to float a bit at high speed.

Before I purchased the 435d I know I was going to fit the Birds suspension.

High Performance Bearing Kit for BMW Differential 215k 215l 215lw

For customers with highly modified cars, or who use their cars aggressively, or for those with high mileage cars looking to prolong the life of their differentials, we would recommend our high-performance bearings.

These uprated tapered bearings offer a 44% increase in load capacity compared to the standard BMW ball bearings, providing much improved durability and a longer lifespan.

Testimonial - Quaife LSD - F32 440i - Mr Smith

Kevin,

Just a quick note to say that I’m very happy with the mods you made to my 440 today.  The gear change has improved immeasurably - shifts are shorter and the feel is much more mechanical.  I adapted to the heavier clutch almost immediately.  The LSD appears to have given the car much better traction on bumpy roads - it drives out of corners better and is more confidence inspiring.  Overall, I’m very pleased - thank you to you and your team for achieving this improvement.

2017 in a nutshell

As another exciting year at Birds comes to a close, we take a look back at some of our most notable achievements, new product developments, and what's in store for what's sure to be an interesting 2018...

Devising a demonstration

B-Series Sport Suspension for BMW F32 435i, 435ix, and 435dx

Birds are pleased to announce the release of their Bilstein-based B-Series Sport Suspension upgrade for the F32 435i, 435ix and 435dx.

The Birds B-Series Sport Suspension Kits consist of specially valved Bilstein shock absorbers and bespoke springs, designed by Birds and industry experts to offer the ultimate improvement in BMW ride quality and handling on the UK's diverse road surfaces.