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Discussion Starter · #1 · (Edited)
Hi everyone!
I've been looking for the perfect for me suspension set up for the past 8 months and finally found a set - Bilstein B14 PSS. Unfortunately, there seems to be a world-wide backorder, and won't be available until mid-July. Since I want to get at least one auto-x/track-day in this season and I have put my suspension refresh on hold since August 2017, I need to find a new option.

The car in question is a BMW e46 330ci (it's an m-sport, but doesn't matter since we're swapping suspension anyway) and my main priority was to get height adjustable suspension (HAS). While HAS would be nice, I'd eventually want to get into a M3, so sucking it up would be alright to put more in the future M3 fund.

The new criteria is:
  • Must give me at most 1/4" wheel well clearance on 19s (currently rubbing w/ H&R Race)
  • performance (ride properly - not bouncing around (too stiff/soft), not skipping over bumps, etc. I want to feel planted to the road.
  • cost/value (must be cheaper than $1300 cad - cost of B14 PSS)
  • ride quality

For shocks I've narrowed it down to Bilstein B8 or Koni Yellow. The Bilsteins are monotube and are suggested to give a harsher ride - but better damping. On the other hand, the Koni's are twintube, but everyone swears by them and they're more livable for a daily. However, this brings me to my next issue. It seems like Bilstein pairs it to the Eibach pro-line or sport-line, while the Koni pairs to the H&R sport or race/eibach pro or sport.

Eibach vs H&R: Both are progressive springs, which I want. Eibach is less aggressive with lowering height and performance, but H&R is the complete opposite. I want the performance without being overly slammed. I'm finding that the H&R are riding too bouncy (might also be shot shocks). For the sake of comparison, I'll be using factory non-sport suspension as a reference point. Eibach Pro-Kit lowers 1.2'" f/r and Sport-Line lowers 1.7"F, 1.5"R. H&R Sport lowers 1.4"f, 0.75"r and Race (current) lowers 2" f, 1.4"r. While I do want to reduce the #stancenation look right now, I also don't want to be a monster truck on 19s.

According to an old TireRack article (link), the H&R sport had the fastest lap time (beating Eibach by hundredths of a second) of the three (H&R Sport, Eibach Pro-Kit, Factory Non-sport), but also reduces wheel well gap to f: 1" r: 4/8" on 18" wheels. The Eibach Pro-Kit out performed the factory suspension with faster lap times of 1/2 second, but reduced wheel well gap to: f: 3/4" r: 3/8" on 18s. The article does mention that "while they [the H&R Sport] allowed the vehicle to understeer just a little more at the limit and during transitions, they also produce a little more cornering power."

The question is, given your experience and the information provided, which combination would you pick? Bilstien with H&R (Race/Sport)? Bilstein with Eibach (Prokit/SportLine)? Koni with H&R (Race/Sport)? Koni with Eibach (Prokit/SportLine)?

Thanks for reading my long post and I look forward to hearing your replies!

Edit: Also entertaining the idea of buying Function & Form Type 2 Coilovers, only $866 USD, but I feel like I'd be disappointed.
 

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http://forum.e46fanatics.com/showthread.php?t=1113357

For affordability, buy the coilover conversion kit from ground control (eibach race springs with custom spring rates) and koni yellows separately from another vendor. Should run you around $1,000, but it will get you a reputable dampening and height adjustable coilover. It will require slight modification of the ground control spring seats with a dremel to work with the koni yellows. I believe the front koni struts from ground control are identical to the conventional front koni yellows except for the mount which is designed slightly different. Look at that guys video and you'll see what I mean, it's pretty simple. The rear koni yellows are different from the ground control koni yellows in that the ground control ones are top adjustable (the conventional rear koni yellow struts have to be removed from the vehicle to adjust the dampening).
 
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