BMW M Performance Suspension (HAS height adjustable sleeve over kit)

[horsepower_and_hounds]

DM me if your results are not what you want at the dealer.... I can give you some advice but they are going about it all the wrong way. Only one way to do it if your not corner balancing. And it will never be perfect. I am in the 160/460 area

[TopJimmy]

@mjames did you measure when parked (parking brake on)? If yes it throws measurements off.

Most accurate:
I roll to a stop (no brake), buddy chocks a wheel, he swaps into the driver seat, then I go measure.

[clubcsl]

Originally Posted by Maitre_Absolut

We are a few with MP HAS on the CS. No spring rates available. It rides like stock, do it.

Any more info on the CS ?
I got an M4 CS and want to lower it.
Was there any calibration done to the electronic dampers ?

[TopJimmy]

Originally Posted by clubcsl

Any more info on the CS ?
I got an M4 CS and want to lower it.
Was there any calibration done to the electronic dampers ?

Regardless of Base, ZCP or CS, the MP-HAS installs without any coding changes needed. EDC works as previously.

[clubcsl]

Originally Posted by TopJimmy

Regardless of Base, ZCP or CS, the MP-HAS installs without any coding changes needed. EDC works as previously.

Ok thank you

[mardibob]

So figured all these DIY install threads and YouTube videos no problem.... hard stop..... I could not touch the Rear lower control arm bolt.

After trouble shooting it and not even able to break it with a breaker bar I came to the conclusion that the dealer likely over torqued it with an air gun.

just curious if anyone else who did a DIY install came across any similar difficulties?


all of a sudden the 13 hours the dealer quoted me or the 10.5 hours the Indy shop quoted me don't seem to bad....

[TopJimmy]

Box wrench + 3lb hand sledge hammer...or my 1/2 drive ratchet with 3ft pipe. Ratchet and pipe was easier.

[ss-f82]

Just wondering what -camber you guys running with mphas?

[HPD15M3]

Originally Posted by mardibob

So figured all these DIY install threads and YouTube videos no problem.... hard stop..... I could not touch the Rear lower control arm bolt.

After trouble shooting it and not even able to break it with a breaker bar I came to the conclusion that the dealer likely over torqued it with an air gun.

just curious if anyone else who did a DIY install came across any similar difficulties?


all of a sudden the 13 hours the dealer quoted me or the 10.5 hours the Indy shop quoted me don't seem to bad....

Lol I had the exact same problem with the control arm bolt. Couldn’t get it to move with an earthquake impact. Putting a jack under the control arm and and raising it slightly allowed the bolt to come out fairly easily. Do not get ripped off at the dealer for 13 hours. I did it with a buddy in my garage in 4. Plus you get the satisfaction of knowing each bolt was torqued to spec.

[mardibob]

Originally Posted by HPD15M3

Lol I had the exact same problem with the control arm bolt. Couldn’t get it to move with an earthquake impact. Putting a jack under the control arm and and raising it slightly allowed the bolt to come out fairly easily. Do not get ripped off at the dealer for 13 hours. I did it with a buddy in my garage in 4. Plus you get the satisfaction of knowing each bolt was torqued to spec.

Thanks for the pep talk. I got everything installed and entirely DIY.
I'm considering doing a write up of my experience as it was much more dramatic than the typical install(kinda as a warning to other mechanical novices like myself haha). I have no regrets though I truly enjoyed the life experience.

Quick question to anyone with experience but I could not quite get the front spring seat flush with the mounting tool. Should I be concerned enough to take it to a shop with a press to get it "seated" fully or do you think I'm good to go. It drives fine but prob will track it again.

Last photo is the drop (not aligned or even measured just from what I eye balled during install).

[horsepower_and_hounds]

It will be fine..... what you will loose is the extra lowering that the space consumes. If it is within 3mm the you loose 3m of lowering ability. I'm sure you..... you will never miss it. it is pressed on plenty well and to tell you...maybe it does not bottom out anyways. When I did my KW HAS.... pretty much the same perches...I had to heat them to get them all the way on with the mallet. I didn't have a press tool or a press

[git-r]

Has anyone run this kit at the recommended drop of 614mm front, 608mm rear with Nankang AR-1 in 275/35/19 at the front on the stock 19" wheels? Or any tyre in that size?

I currently have -3 degrees camber front on stock suspension which lowers the front height to 620mm and haven't had any issues running cup 2 in 275/35/19 on tracks with big hills, really hoping the 6mm drop in height wont give me issues running the AR-1 (it's comparatively small for its size).

Would be very grateful if someone could confirm this ��

[BruceT]

Interesting thread.

I am trying to find out what could possibly be wrong with my HAS set up.

My local BMW dealer fitted it and apart from not supplying me everything I paid for and damaging two wheels, seem to have incorrectly installed the MPerformance HAS.

One of the thing they told me is they had not used the MPHAS kits bump stops. I have been told they have to be used as they are much shorter than the originals and the car is probably riding on the bump stops.
Can anyone please confirm this. i have also been told the front shocks are not seated correctly. is this possible?

Below is a picture of the car. Im happy with the height but the suspension is set at its lowest setting as per pictures below. Something doesnt seem right.

Any ideas would be appreciated. Thank you

Thank you

[horsepower_and_hounds]

Originally Posted by BruceT

Interesting thread.

I am trying to find out what could possibly be wrong with my HAS set up.

My local BMW dealer fitted it and apart from not supplying me everything I paid for and damaging two wheels, seem to have incorrectly installed the MPerformance HAS.

One of the thing they told me is they had not used the MPHAS kits bump stops. I have been told they have to be used as they are much shorter than the originals and the car is probably riding on the bump stops.
Can anyone please confirm this. i have also been told the front shocks are not seated correctly. is this possible?

Below is a picture of the car. Im happy with the height but the suspension is set at its lowest setting as per pictures below. Something doesnt seem right.

Any ideas would be appreciated. Thank you

Thank you

At that height it will not be on the stops...you might bottom out but not riding. 2nd they took the short cut route and did not remove the back dampers to switch out the stops. I don't either...I just trim them down to the same height that come in the kit if it is EDC. The rear is notorious to having the upper connector damaged

[jmciver]

Your car looks pretty low to me, which is what you would expect based on your set ride height. Also, the close-up pics you provided don't look like there is anything very obviously wrong with your install. But let's see what others say...

As a reference, the pic below is a rear quarter view of my car with the MP HAS installed and my car is not set at the lowest ride height...

[BruceT]

Thank you for the replies. Here is a pic of my right rear quarter. This is at the lowest possible setting.

[BruceT]

Originally Posted by horsepower_and_hounds

At that height it will not be on the stops...you might bottom out but not riding. 2nd they took the short cut route and did not remove the back dampers to switch out the stops. I don't either...I just trim them down to the same height that come in the kit if it is EDC. The rear is notorious to having the upper connector damaged

Please May I ask you to share a pic of how they are cut. Will save me lots of work.

Thank you

[horsepower_and_hounds]

Man...that looks high to me. You be having high waters. Look at this one and its not all the way down on 265/285 9.5/10.5 19's

[BruceT]

Yeah that's what I thought too.

There are two reasons I can think of after checking everything:
- on the front possibly the front shocks have not been seated all the way down in the collar
- the car is resting on the standard bump stops. the suspension is much harder than what it was before and on bumpy roads does bump around a little so I suspect this to possibly be the case


Thank you for the replies so far though.

[BruceT]

Just a short report back.
Another dealership fitted the MPerformance bump stops. The car now rides better than standard. Road noise is almost completely eliminated. It has also dropped around 10mm in the rear and about 15mm in the front. Sorry I don’t know what that is in inch’s.

The dealership said it was definitely running on the bump stops.

Here is a picture of the standard front bump stop vs the MPerformance bump stop.
I am amazed at the difference it has made.
Thank you for the replies.

[swagon]

Originally Posted by BruceT

Just a short report back.
Another dealership fitted the MPerformance bump stops. The car now rides better than standard. Road noise is almost completely eliminated. It has also dropped around 10mm in the rear and about 15mm in the front. Sorry I don’t know what that is in inch’s.

The dealership said it was definitely running on the bump stops.

Here is a picture of the standard front bump stop vs the MPerformance bump stop.
I am amazed at the difference it has made.
Thank you for the replies.

What is it with dealerships worldwide not knowing how to fit original BMW parts? This must be, like, the 20th botched HAS install on this forum alone.

[BruceT]

I don’t know but this dealership in Midrand, Johannesburg South Africa are absolutely useless.
Didn’t fit the new nuts and bolts I purchased, didn’t tighten everything, damaged two wheels and didn’t bother fitting the bump stops that came with the kit! Then when I complained to the Dealer Principal he just got other people to contact me. They basically denied everything even with photographic evidence and implied I was lying!
And then they hold you to ransom for your warranty if you don’t use them to work on your car!