Suspension upgrade or replacement for E46 330CI

[Mututing]

Greetings, everyone!

My springs and shocks are deteriorated, and I want to repair them shortly. I have also recognised that this may be an opportune moment to upgrade, since I wish to reduce body roll and slightly lower the ride height. The problem is in my inability to ascertain if it is a detrimental concept. Despite doing some research, my confusion just intensifies with each further inquiry. Primarily due to my daily use of this vehicle and the genuinely deplorable road conditions in my vicinity, I frequently encounter extensive poorly constructed speed bumps with excessively steep and abrupt inclines, as well as substantial potholes that are unavoidable, necessitating a reduction to a crawl. Consequently, the recent wear on my springs and shocks has been particularly vexing, as I must navigate these obstacles slowly to prevent scraping the undertray, rendering me slower than other drivers encountering the same adverse conditions.

The initial intention was to get the BC Racing BR RA coilover kit and maintain it at maximum ride height, which would still be over an inch lower than the factory setting and is expected to be of great quality. However, it was later noted that this setup may be too rigid for regions with many speed bumps and potholes.

I have more confidence in the Bilstein B14 coilover kit, however my understanding of its performance is limited to forum discussions. I have the same uncertainty with the BC Racing coilover about their suitability for the bumps and potholes in my vicinity.

I have seen many individuals reference H&R springs in conjunction with Koni shocks; but, after experiencing a friend's 3 Series with that configuration, I found it unsatisfactory, leading to a prompt replacement. While this may be an isolated incident, it has deterred me from using them myself.

Am I too concerned about the views of random commentators, and are the BC Racing and Bilstein alternatives acceptable if I maintain mild dampening and a high ride height for regular driving? If not, should I settle for a simple replacement rather than an upgrade, or are there other choices available?

Thank you for your attention!

[engrol]

It is advisable to use OEM shocks if you want to retain your vehicle for an extended period.

 

[Radiantecon]

Bilstein B14 is subpar.

H&R springs, especially when paired with factory dampers, are very effective.

BCs are exceptional. Particularly with the cost. Avoid selecting an excessively hefty spring.

[Mututing]

Bilstein is subpar. What is the reason?

[Radiantecon]

The quality of lower-end products is subpar. Approximately 80% of individuals I have met who match those criteria have had issues within 12 months, necessitating repairs for reconstruction.

[Mututing]

It is unfortunate to hear, since they seemed to be the more secure choice.

I suppose I will have to make an uncertain choice between them or the BC Racing options.

[Radiantecon]

One cannot err with BC. Avoid selecting a hefty spring, and you will appreciate them. It is challenging to locate a configuration that is economically feasible while allowing for separate adjustment of preload and ride height.

Additionally, I believe the damping on the Billies is not adjustable.

[Mututing]

The B14s are reportedly adjustable from both resellers and the official site; nonetheless, I first believed otherwise, though I cannot recall the source or rationale for that belief.

I want to toss a coin about B14's or BC and thereafter report on their quality, dependability, and usability for everyday usage in poorly maintained road conditions. This information may assist others facing similar dilemmas in making informed decisions.

[Radiantecon]

Opt for BCS; I have installed many sets on various vehicles without encountering any complaints or issues about the components.

[Mututing]

Marginally tardy... Heads was B14.

We will shortly ascertain. 🤣

[Radiantecon]

Rest assured, I will express my foresight when the appropriate moment arises, often with billies at around four months, and all the paint has corroded away. 😉