[2jz300]

Looking for a set to throw on my 335is. Does BMW still have these for sale?

[Silnismo]

Nope not anymore.

[cvc 22349a]

Does NYC have smooth roads? I had that suspension and found it too harsh for CA roads. I'd keep the springs and replace the dampers with Koni sport. After 3 different suspensions that's what I went back to for a DD.

[mweisdorfer]

Originally Posted by 2jz300

Looking for a set to throw on my 335is. Does BMW still have these for sale?

Check ECS tuning

[iqraceworks]

Look at the Bilstein B12 Prokit. It comes with B8 shocks, and the Eibach Sport Springs. It lowers the car slightly, and really firms up the suspension compared to the oem feel.

Good price too...I think you can get the kit for $800 at most places...maybe less.

[Salzamani]

Originally Posted by iqraceworks

Look at the Bilstein B12 Prokit. It comes with B8 shocks, and the Eibach Sport Springs. It lowers the car slightly, and really firms up the suspension compared to the oem feel.

Good price too...I think you can get the kit for $800 at most places...maybe less.

I installed the B12 “Prokit” also about 2 weeks ago on my 07 E90 335i sedan which came with the sport suspension. This kit made almost no change as far as drop goes. I made very close accurate measurements before the install and after. I keep checking it every other day and there is absolutely no change. It dropped maybe 1/8” i don’t believe the springs will settle more either because it just has not changed even the slightest bit. Even Eibach mentions that their springs don’t really settle much... I do feel the difference in performance yes it does handle better. I just wish I had a moderate drop...

Just to be clear I was coming from a sport suspension and I installed the B12 “Prokit” Bilstein also makes a B12 “Sportline” kit that does lower the car 10mm more than the B12 Prokit version.

I bet these two slightly different versions of the B12 kits are part of the cause of so many reports of various drops in these E90 in addition to other factors such as what exact suspension are you coming out of...

[iqraceworks]

My car dropped about 3/8" in the back, and 3/4" in the front. It was noticable....but not a crazy drop. I'd rather have a slight drop vs. a "slammed" look like the H&R springs.......I don't want my car dragging on everything, and rubbing on the tires when I'm out driving it hard.

I'm very happy with the Eibach Sport Springs that came with my B12 pro kit.

[Salzamani]

Originally Posted by iqraceworks

My car dropped about 3/8" in the back, and 3/4" in the front. It was noticable....but not a crazy drop. I'd rather have a slight drop vs. a "slammed" look like the H&R springs.......I don't want my car dragging on everything, and rubbing on the tires when I'm out driving it hard.

I'm very happy with the Eibach Sport Springs that came with my B12 pro kit.

And you were coming from a sport suspension?

I think you have a 08 E92 right?

[iqraceworks]

07' e92👍

[Salzamani]

Originally Posted by iqraceworks

07' e92👍

What about the other question what suspension did you have before you installed the B12 Prokit?

[iqraceworks]

Originally Posted by Salzamani

What about the other question what suspension did you have before you installed the B12 Prokit?

I'm assuming my car had the sport suspension on it......

[colorado.e9x]

Random anecdote, when I was getting my new tires a couple years ago, the tire guy said my car was lowered. I was on original suspension so I was thinking to myself "he has no idea what he's talking about." Keep in mind I have an xi so it pretty much came with monster truck suspension. After installing the B12 kit, the car dropped hardly at all. Turns out my shocks were so blown that compared to any newer xi, it would have looked like it was lowered.

[Salzamani]

Originally Posted by colorado.e9x

Random anecdote, when I was getting my new tires a couple years ago, the tire guy said my car was lowered. I was on original suspension so I was thinking to myself "he has no idea what he's talking about." Keep in mind I have an xi so it pretty much came with monster truck suspension. After installing the B12 kit, the car dropped hardly at all. Turns out my shocks were so blown that compared to any newer xi, it would have looked like it was lowered.

In my case (07 335i E90 sport suspension) with 75k miles on original sport suspension I was sure that my shocks were completely blown too. Well after removing the struts I found 1 of the front ones the piston would not rebound at all(blown) and both of the rears would not rebound. I measured the vehicles height very closely before the install and measure everything very closely after the install. I even measured the old sport spring next to the B12 Prokit springs and found a good 3/4” difference which really led me to believe there would likely be a 3/4” drop but then there is another factor I didn’t take in consideration. The springs might compress differently which is the only evidence I have as to why that 3/4” difference in spring height did not equal the 3/4” drop after they were installed. Spring compression. Sure they were shorter springs but they are stiffer designed for better cornering and therefore it’s compressed measurements equaled about the same as the old stock sport springs once installed. I don’t believe the struts/shock really play a role in ride height. Only the springs and how much they compress under load. At least that was the conclusion I came to. At the end I think even though I would have loved a 3/4” drop there are disadvantages that come with that as well and knowing myself I would have been bothered by those disadvantages after a while. Disadvantages such as jacking the car up, bottoming the car out on dips and speed bumps which can lead to a very expensive repair cost... for me a daily driver has to be practical too.

[iqraceworks]

Originally Posted by colorado.e9x

Random anecdote, when I was getting my new tires a couple years ago, the tire guy said my car was lowered. I was on original suspension so I was thinking to myself "he has no idea what he's talking about." Keep in mind I have an xi so it pretty much came with monster truck suspension. After installing the B12 kit, the car dropped hardly at all. Turns out my shocks were so blown that compared to any newer xi, it would have looked like it was lowered.

Shocks don't affect ride height......springs do.

[colorado.e9x]

Originally Posted by iqraceworks

Shocks don't affect ride height......springs do.

I wouldn't be surprised if the springs started to sag. They were soft to begin with, I believe BMW geared it towards comfort over handling. Like Salzamani, there was no rebound on any of them. I feel the "lowered" effect was because I was pretty much riding on springs at the point. Hit bump stops on any medium/large bump over 20mph

[iqraceworks]

Originally Posted by colorado.e9x

I wouldn't be surprised if the springs started to sag. They were soft to begin with, I believe BMW geared it towards comfort over handling. Like Salzamani, there was no rebound on any of them. I feel the "lowered" effect was because I was pretty much riding on springs at the point. Hit bump stops on any medium/large bump over 20mph

Yeah...good point.

[mweisdorfer]

Originally Posted by Salzamani

I installed the B12 “Prokit” also about 2 weeks ago on my 07 E90 335i sedan which came with the sport suspension. This kit made almost no change as far as drop goes. I made very close accurate measurements before the install and after. I keep checking it every other day and there is absolutely no change. It dropped maybe 1/8” i don’t believe the springs will settle more either because it just has not changed even the slightest bit. Even Eibach mentions that their springs don’t really settle much... I do feel the difference in performance yes it does handle better. I just wish I had a moderate drop...

Just to be clear I was coming from a sport suspension and I installed the B12 “Prokit” Bilstein also makes a B12 “Sportline” kit that does lower the car 10mm more than the B12 Prokit version.

I bet these two slightly different versions of the B12 kits are part of the cause of so many reports of various drops in these E90 in addition to other factors such as what exact suspension are you coming out of...

It will take 3 to 4,000 miles for the B12 kit to break in and finally settle. So, to make an assessment or comparison after 2 weeks, might be a little pre-mature. 😉

[iqraceworks]

Originally Posted by mweisdorfer

It will take 3 to 4,000 miles for the B12 kit to break in and finally settle. So, to make an assessment or comparison after 2 weeks, might be a little pre-mature. 😉

4,000 miles? I have around 1,000 miles on my B12 pro kit....And it settled a slight bit around 500 miles after the install.....but hasn't dropped a bit after that. Where are you getting that 4,000 mile figure?

[mweisdorfer]

Originally Posted by iqraceworks

4,000 miles? I have around 1,000 miles on my B12 pro kit....And it settled a slight bit around 500 miles after the install.....but hasn't dropped a bit after that. Where are you getting that 4,000 mile figure?

3 to 4,000 miles

Personal experience. I've had the b12 kit for 50,000 miles. Plus, I base that on many of readings I did prior to installing them myself.

[iqraceworks]

Well... mine was done settling after 500 miles. .....for what that's worth.

[colorado.e9x]

Originally Posted by mweisdorfer

3 to 4,000 miles

Personal experience. I've had the b12 kit for 50,000 miles. Plus, I base that on many of readings I did prior to installing them myself.

Has it gotten any more comfortable than say 5000 miles?

[mweisdorfer]

Originally Posted by colorado.e9x

Has it gotten any more comfortable than say 5000 miles?

It will get a little more comfortable but not much. Remember, you have Bilstein B8's. This is their premium sport shock & strut. Also, Bilstein is known to have a stiffer shock/ strut then 99% of most OEM applications.