Quote:
Originally Posted by Rmtt
I did just have a look at those. I'm not familiar with that brand, but also don't come from the BMW world until recently.
So you think those are a pretty decent setup...or heard feedback from others? I'm assuming if I were to buy these, I would still need to get all the stuff (small rubber bits/spring pads, shock mounts/strut mounts) that asbrr mentioned as well....correct?
Thanks guys. All of you are a big help!
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The ST are made by KW which is a well known/quality manufacturer. The ST are marketed as a more entry level brand but with very similar build and characteristics. They are a good entry level coilover system.
As for the pads and so on, you will need some as the ST coils appear to use the same top mounts and hardware at the front. The rears probably use all the same hardware except maybe the lower and upper spring pads, hard to say from the picture.
For reference these are the diagrams so you can see how this stuff comes together:
Front:
https://www.realoem.com/bmw/enUS/sho...diagId=31_0695
- Looks like you should need parts 1 to 9 from here (maybe 8 can be reused it's a metal spring cup). Be sure to buy the latest iteration of the guide support (9), part number ending in 5098. ECS has a crazy sale for Lemforder brand ones for like $18.99 right now!
- Also, consider adding Dinan static camber plates to the front, they are noiseless and add about -0.75 of static camber which helps front end grip
- Lastly I'd suggest buying all the parts one shot and building the struts completely to avoid having to dis-assemble the old struts to reuse parts, that way it's a swap out and swap in job.
Rear:
https://www.realoem.com/bmw/enUS/sho...diagId=33_1233
- I *think* most of the factory rubber parts will go here, but I'm not certain so please check
- One thing not shown here is the lower shock mount, another rubber part. That's show here as #1:
https://www.realoem.com/bmw/enUS/sho...diagId=33_1928
- I'm not sure if they are compatible, but take a look at the Dinan rear shock top mounts as well. Supposedly eliminate the foam and add 10mm of shock travel to help with ride quality. I have these on as well with my B12 kit.
Some vendors do an "installation kit" which includes most/all of the above, not all parts may apply to you given the coilovers, but something to consider:
https://www.ecstuning.com/b-assemble...1306775098kt1/
Last but not least, seriously consider the rear subframe bushings! I have the whiteline 2 piece, there are many other alternatives as well. If you have eliminated your runflats, the bushings should get an upgrade (the runflats are the main reason BMW put those shitty bushings in, to help with the super stiff sidewalls). The factory bushings allow way too much slop in the rear end, if you're upgrading your suspension having proper RSFB bushings in place will really help it work properly.
And then like I said you might as well do the brake lines haha.