[elisiX]

Originally Posted by JaeP

I recall the rear stock bumps stops supposed to be moved to the front and the MSS supplied put in the rear.


I’m planning on going 25mm all around so I can report back.

Correct. I was back to front, so to speak

[sys64738]

Originally Posted by elisiX

I'm also running the 25/20 thread gap setup. As mentioned earlier, it's very comfortable. More than stock, and more than when I first installed my springs (which were set too low).

I've noticed however, only on the left front, that it seems to bottom out quite easily on medium and heavy bumps in the road. It doesn't seem to be happening on the RHS (drivers side).

My wife was driving the other day and I also noticed that the car feels much firmer from the front passenger seat. I've got no idea what this is, but now

I'm worried the stock front bump stops weren't moved to the back, with the MSS supplied bump stops added to the front.

Back to the shop to take a look I suppose.

Is anyone else getting a hard thud with the 25mm/20mm thread gap setup? It's not happening on low depth bumps in the road etc, but on medium or higher uneven roads.

So I had mine adjusted to 25mm front and 22mm rear this week (previous setting was 29mm front / 35mm rear). My bump stops are all correct.

It made a modest improvement in the thud / bottoming out issue, but for sure has not eliminated it completely. I just don't think that is going to happen with this kit no matter what your settings are.

I've read elsewhere that the suspension bushings are solid, and there is lack of sound deadening in the car, so I think you will always have some issue with this over the sharp bumps.

That said, for those considering MSS, it is still well worth it as the comfort level in normal daily driving is a vast improvement.

[sys64738]

Originally Posted by JaeP

Any reason you went with 22mm instead of 20mm ?

I'm headed to my shop now to go with 25mm front and 20mm back. I'll have them measure exactly where mine are right now as it was a very rough measure before.

Yes. When I did the 25mm/20mm, the rake was a hair less than 6mm. Moving to a 22mm got the rake to roughly 1/4", or 6.35mm.

I have a non-comp, but I doubt that makes a difference here. Each car is probably slightly different, as we are just talking mm's here.

[allinon72]

Originally Posted by sys64738

I've read elsewhere that the suspension bushings are solid, and there is lack of sound deadening in the car, so I think you will always have some issue with this over the sharp bumps.

That said, for those considering MSS, it is still well worth it as the comfort level in normal daily driving is a vast improvement.

I think you're referring to the rear subframe, which is bolted directly to the body instead of with bushings like a normal SUV. This creates a very rigid body structure but you lose some of the give, which leaves the suspension to handle 100% of the dampening. Good for handling, not so good for ride quality or NVH.

I think this is what we're bumping up against - we are asking an aftermarket spring to handle all of the dampening with the stock shock absorber. This is a tall ask - and no spring is going to get it done perfectly without changing out the dampeners.

[r33_RGSport]

Originally Posted by sys64738

So I had mine adjusted to 25mm front and 22mm rear this week (previous setting was 29mm front / 35mm rear). My bump stops are all correct.

It made a modest improvement in the thud / bottoming out issue, but for sure has not eliminated it completely. I just don't think that is going to happen with this kit no matter what your settings are.

I've read elsewhere that the suspension bushings are solid, and there is lack of sound deadening in the car, so I think you will always have some issue with this over the sharp bumps.

That said, for those considering MSS, it is still well worth it as the comfort level in normal daily driving is a vast improvement.

Do you mind emailing some pictures of the front springs to me?
I want to check the condition as I have another suspicion.

[James Cole]

I just looked at the subframe and it has bushings in the part it meets the body... where did you get that info?

Originally Posted by allinon72

I think you're referring to the rear subframe, which is bolted directly to the body instead of with bushings like a normal SUV. This creates a very rigid body structure but you lose some of the give, which leaves the suspension to handle 100% of the dampening. Good for handling, not so good for ride quality or NVH.

I think this is what we're bumping up against - we are asking an aftermarket spring to handle all of the dampening with the stock shock absorber. This is a tall ask - and no spring is going to get it done perfectly without changing out the dampeners.

[sys64738]

Originally Posted by r33_RGSport

Do you mind emailing some pictures of the front springs to me?
I want to check the condition as I have another suspicion.

Ok, I have sent you the requested pics via E-mail of the front springs. I am attaching them to this post also for others to compare to theirs.

[r33_RGSport]

Originally Posted by sys64738

Ok, I have sent you the requested pics via E-mail of the front springs. I am attaching them to this post also for others to compare to theirs.

Got it. Thank you.
As what I thought.

For others that have same noise issue, please email front spring pictures to me.
I have a suspicion that I need to confirm before I can approach MSS's owner.

[4151zero]

are those coils binding too soon?

[kzg1969]

That look really tightly bound that!

[allinon72]

Given those pics it's no wonder the springs are bottoming out.

[sys64738]

Originally Posted by allinon72

Given those pics it's no wonder the springs are bottoming out.

The pics I took are of the car just sitting in the garage with no passenger or other loads. So basically, they are of the springs "as designed" with a modest 1" drop from stock (25mm adjuster thread gap).

Given that I still have the issue over big/sharp bumps, and some folks don't, could those people that do NOT have a bottoming out/noise issue over big bumps post pics of their front springs just sitting in the driveway? Just want to compare.

TIA.

[JaeP]

Originally Posted by sys64738

The pics I took are of the car just sitting in the garage with no passenger or other loads. So basically, they are of the springs "as designed" with a modest 1" drop from stock (25mm adjuster thread gap).

Given that I still have the issue over big/sharp bumps, and some folks don't, could those people that do NOT have a bottoming out/noise issue over big bumps post pics of their front springs just sitting in the driveway? Just want to compare.

TIA.

Yes, here are mine. I don't have any bottoming out noise so far. Just took a drive over where there are speed bumps too.

Sitting in my garage, no load, full tank of gas, 25mm front, 25mm rear thread gaps.

Can't help but notice that my springs seem to be less compressed. As a reference, it looks as if a spring width can slide in and out of the gap in mine where as yours looks like a tight a fit.

first picture is passenger side front and second picture is drivers side front.

[4151zero]

I'm still curious if everyone has similar optioned cars, like sunroof and spare tire?

[James Cole]

Originally Posted by r33_RGSport

Got it. Thank you.
As what I thought.

For others that have same noise issue, please email front spring pictures to me.
I have a suspicion that I need to confirm before I can approach MSS's owner.

Let us know your thoughts Ben!

[sys64738]

Originally Posted by 4151zero

I'm still curious if everyone has similar optioned cars, like sunroof and spare tire?

In my case, I do have a sunroof and a spare tire. Mine is also a non-comp.

[r33_RGSport]

Originally Posted by James Cole

Let us know your thoughts Ben!

I will report back once I confirmed my suspicion.

[allinon72]

Am I crazy or is there 1", maybe 1-1/4" of travel before the spring bottoms out?

[4151zero]

Originally Posted by sys64738

In my case, I do have a sunroof and a spare tire. Mine is also a non-comp.

This variable should be considered when setting up ride height and spring rates, imho

[elisiX]

First picture is the passenger side (which seems to bottom out)

Second picture is the drivers side (which does NOT seem to bottom out)

I'm running the 25mm/20mm F/R thread gap setup.

[elisiX]

Further to the above it’s happened on the drivers side now too.

Bumps and shallow pot holes or manholes you wouldn’t expect to hit the bump stop.

I’d understand a proper pot hole, but this seems to be an issue when you don’t expect it.

[shemeld_135]

I've been reading and from the reviews it these seem to help soften then ride. I moved to the x3m comp from an m2c as I was expecting - was looking for more space. The ride difference felt soft enough to me but now that I have my son it seems a bit harsh for his baby neck.

For the people who moved to the mss springs.. do you think it would be soft enough for a baby in comfort or is it still too rough. Would love your feedback. I'm trying everything I can to keep the x3m comp but the lady thinks it's so harsh for him. Help me win the battle with some actual reviews and thoughts from people who have them installed.