EscapeYourMind With regards to that Bilstein B14 kit.. you will still need a few more parts.
For the front suspension... new upper strut bearing mounts will be needed. Sometimes you can get away with reusing your old ones... but sometimes they just fall to pieces when you disassemble them. They are cheap. Also some MOS2 grease for them(to smear inside the bearings) isn't a bad idea.
For the rear suspension... I would replace the rear shock hardware and bushings. DINAN makes a great kit that comes with everything you need for ~$100.
I would also replace the lower shock(rubber) mount and e-torx bolts. The rubber mount where the bottom of the shock attaches to the 135i rear control arm. This part is also mostly shot with your car's age. I would also check the rear suspension arms for wear and tear. They can be easily worn out.
I also ordered new rubber pads for my new Eibach springs(front and rear, upper and lower).
IF you decide to install M3/1M rear control arms/links this would be a good upgrade to do. There are two per side of the rear suspension.
IF you upgrade to the M3/1M rear control arms.... but that requires a different rear shock... because the M control arms don't use the cushy rubber but hardened rubber bushings.
135i rear lower control arm...
M3 rear lower control arm... Notice how the shock mounts differently requiring a different shock absorber.
Here is an old(stock) foto from my collection of someone going down the suspension rabbit hole... only thing missing is the M3 rear control arms.
rowsdower I am also planning to replace my stock 135i suspension. I have the M3 front control and thrust arms(two per front side)... I also have the DINAN camber kit. I ws planning on installing both... but maybe I should only install the M3 bits> on the front end???
DINAN camber plates...
https://www.google.com/search?safe=a...zQ1t-4#imgrc=_
Also... does anyone know of the part numbers for the M3/1M tie rods ? I am also thinking of replacing the tie rods on my car as well.
thanks,
Dackel