I've owned by Z4M for several months and have been happy with it in almost every single way except for the steering feel. While it's better than any electric rack I've driven and certainly has some feedback, it's still not on the same level as the E93 I used to have or my buddy's low-mileage 987.2 Cayman. My car has 80k miles on what appear to be original FCABs. They do show some signs of wear/age but I don't think they're totally shot because turn-in is still precise and the car does not wander.
I was thinking of just replacing these with new OEM offset rubber bushings, but wondered if anyone saw improved steering feel with aftermarket polyurethane FCABs. I know the primary reason people upgrade these are to decrease deflection on track, but are they worth the downsides (noise, harshness) on a street car for better steering feel? I know there are many aftermarket posts about FCABs across various forums but I can't find one about how they affect feedback.
So these are the options I'm considering:
New OEM BMW rubber offset bushings (31107838575)
Could get them pre-pressed into the lollipops from somewhere
Whiteline caster bushing set, polyurethane (W52606)
https://whitelineperformance.com/pro...06-bushing-kit
I know this company is relatively reputable but I can't find any reviews of these bushings so that does give me some hesitation. Price is excellent.
Powerflex offset bushing, aluminum/polyurethane (PFF5-5601G)
https://www.powerflexusa.com/shop/pr...eccentric-3632
These are the most aggressive option being mostly aluminum, and are quite a bit more expensive. Some people report noise from these as well as an increase in ride harshness.
I know there are other factors that affect steering feel like alignment and tires (I have factory alignment specs and Michelin PS4S right now), but I figure if I'm replacing FCABs I should get the best option.
Thanks!